NRG Energy v. Public Service Comm'n ( 2021 )


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  • NRG, et al. v. Maryland Public Service Commission, No. 1181, September Term, 2020,
    filed. Opinion by Graeff, J.
    MARYLAND PUBLIC SERVICE COMMISSION—STANDARD OFFER SERVICE
    ADMINISTRATIVE ADJUSTMENT RATES
    PU § 7-505(b)(8) gives the Commission the authority to “determine the terms, conditions,
    and rates” of SOS. The Commission, after listening to all the testimony, decided on the
    appropriate rate for the Administrative Adjustment component of SOS. This decision was
    committed to the Commission’s broad discretion, and we give its decision in that regard
    deference. The Commission determined BGE’s recommendation was reasonable, with a
    couple of modifications suggested by Commission Staff. It acted within its discretion in
    rejecting the analysis set forth by ESC, and its decision was not arbitrary and capricious.
    Two portions of the Order, however, require clarification and/or correction. First, the
    Commission states that two accounts should be excluded from the SOS analysis, and then,
    several sentences later, includes them in the calculations. Second, the Commission’s
    mathematical calculations appear incorrect. Accordingly, although the Commission’s
    decision, in general, was supported by substantial evidence and was not arbitrary and
    capricious, the Commission must clarify whether the accounts discussed should be
    included in the total costs and recalculate the Administrative Adjustment consistent with
    those calculations.
    Circuit Court for Baltimore City
    Case No. 24-C-20-000232
    REPORTED
    IN THE COURT OF SPECIAL APPEALS
    OF MARYLAND
    No. 1181
    September Term, 2020
    ______________________________________
    NRG ENERGY, INC., ET AL.,
    v.
    THE MARYLAND PUBLIC SERVICE
    COMMISSION, ET AL.
    ______________________________________
    Graeff,
    Reed,
    Wright, Alexander, Jr.
    (Senior Judge, Specially Assigned),
    JJ.
    ______________________________________
    Opinion by Graeff, J.
    ______________________________________
    Pursuant to Maryland Uniform Electronic Legal
    Materials Act
    (§§ 10-1601 et seq. of the State Government Article) this document is authentic.          Filed: September 30, 2021
    2021-10-08 16:48-04:00
    Suzanne C. Johnson, Clerk                                                          *Ripken, Laura S., J., did not participate in the
    Court’s decision to designate this opinion for
    publication pursuant to Maryland Rule 8-605.1.
    This appeal arises from an order issued by the Maryland Public Service Commission
    (the “Commission”), one of the appellees. The order addressed, among other things, the
    price that Baltimore Gas and Electric (“BGE”), another appellee, is permitted to charge to
    supply Standard Offer Service (“SOS”) electricity to its customers. Appellants, NRG
    Energy Inc., Vistra Corp., Direct Energy Services, LLC, and Interstate Gas Supply, Inc.
    D/B/A IGS Energy, collectively referred to as the Energy Supplier Coalition (“ESC”),
    objected to the portion of the order that addressed the appropriate charge for the
    “Administrative Adjustment” portion of BGE’s electric supply rates. It filed a petition for
    judicial review of the order in the Circuit Court for Baltimore City, which denied the
    petition.
    On appeal, appellants argue that the Commission erred, or was arbitrary or
    capricious, in setting the amount of the Administrative Adjustment Component of BGE’s
    SOS rate.1 Appellants ask us to remand the case “to the Commission to establish a market
    1
    We have combined the three questions presented by appellants in their brief, which
    are as follows:
    1.     Is the Commission entitled to deference when addressing an issue of
    first impression on which it has yet to develop precedent, consistent
    rulings or expertise?
    2.     Did the Commission err as a matter of law, or otherwise act in an
    arbitrary or capricious manner, in approving a standard offer service
    rate for BGE without applying the market price standard required by
    the Competition Act?
    3.     Did the Commission err as a matter of law, or otherwise act in an
    arbitrary or capricious manner, in disregarding statutory mandates
    price for [BGE]’s SOS [rate] that reflects all of the costs that are incurred to provide this
    service in a manner that is required by the [statute].”
    For the reasons set forth below, we shall vacate the judgment of the circuit court
    and remand for further proceedings.
    FACTUAL AND PROCEDURAL BACKGROUND
    I.
    Statutory Scheme & Relevant History
    Before addressing the specifics of this case, we address the background and
    statutory scheme regarding deregulation of electric utilities in Maryland. In Severstal
    Sparrows Point, LLC v. Pub. Serv. Comm’n of Maryland, 
    194 Md. App. 601
    , 604 (2010),
    this Court explained that the electric utility industry in Maryland is comprised of two
    components: supply and distribution.       Supply (electricity) is a commodity, whereas
    distribution (power lines) is a service. 
    Id.
     “Historically, these components were ‘bundled’
    together and provided to customers exclusively by one utility company in each distribution
    territory. BGE controlled one such distribution area.” 
    Id.
     (footnote omitted).
    In 1999, the Maryland General Assembly enacted the Electric Customer Choice Act
    of 1999 (the “Competition Act”). See Md. Code Ann., Pub. Util. Article (“PU”) §§ 7-501–
    517 (2020 Repl. Vol.).      Severstal, 194 Md. App. at 604–05.         The purpose of the
    Competition Act was to:
    obligating the Commission to support the development of a
    competitive retail electric market?
    2
    (1) establish customer choice of electricity supply and electricity supply
    services;
    (2) create competitive retail electricity supply and electricity supply services
    markets;
    (3) deregulate the generation, supply, and pricing of electricity;
    (4) provide economic benefits for all customer classes; and
    (5) ensure compliance with federal and State environmental standards.
    PU § 7-504.
    As this Court explained in Severstal, 194 Md. App. at 605:
    To further these goals, the component parts of electric service were to be
    unbundled. Distribution was to remain monopolized and, therefore, the rates
    charged were to remain closely regulated by the PSC. Supply was to be
    deregulated, however, with the rates charged to be largely established by the
    market. In other words, electricity customers would, for the first time, be
    permitted to shop on the open market for a third-party electrical energy
    supplier.
    *      *      *
    Although the [Competition] Act permitted consumers to shop for their
    supply of electricity, its drafters recognized that not all consumers could or
    would do so. For that reason, the law was written to obligate the electricity
    utilities such as BGE to continue to provide “backstop” electricity supply,
    known as Standard Offer Service (“SOS”), to consumers who chose not to
    shop for their electric supply or, for whatever reason, could not obtain
    electricity on the open market. The legislative goal was to phase out SOS
    over time as the competitive market more fully developed in Maryland.
    While most commercial electricity customers now shop for their energy
    supply, most residential customers and many small commercial customers
    do not. They continue to receive SOS electricity supply by default.
    PU § 7-510(c)(2) explains SOS as follows:
    (2) Electricity supply purchased from a customer’s electric company is
    known as standard offer service. A customer is considered to have chosen
    the standard offer service if the customer:
    3
    (i) is not allowed to choose an electricity supplier under the phase in
    of customer choice in subsection (a) of this section;
    (ii) contracts for electricity with an electricity supplier and it is not
    delivered;
    (iii) cannot arrange for electricity from an electricity supplier;
    (iv) does not choose an electricity supplier;
    (v) chooses the standard offer service; or
    (vi) has been denied service or referred to the standard offer service
    by an electricity supplier in accordance with § 7-507(e)(6) of this
    subtitle.
    Thus, a customer receives SOS if the customer does not shop for electric supply or
    cannot obtain electricity from another source. BGE now has two roles: (1) it is the sole
    distribution company delivering electricity to customers through, as ESC asserts, BGE’s
    “wires and poles”; and (2) for consumers who have not chosen a different supplier, it is
    also the SOS provider supplying the electricity in competition with other suppliers.2
    With respect to charges involving distribution, BGE may charge “just and
    reasonable” rates.   PU § 4-102.       In its role as SOS provider, however, PU § 7-
    510(c)(3)(ii)(2) requires that electricity companies such as BGE supply SOS at a “market
    price that permits recovery of the verifiable, prudently incurred costs to procure or produce
    2
    BGE explains that customers may choose other suppliers for a variety of reasons,
    “including lower prices, fixed prices, or access to 100% renewable electricity.” The
    Commission has a website that describes potential benefits from choosing a competitive
    supplier, including obtaining “rates below the utility’s Standard Offer Service (or default)
    rate” and obtaining “electricity from ‘clean’ sources such as solar or wind.” The Benefits
    of Choice, MD ELECTRIC CHOICE, https://www.mdelectricchoice.com/how-it-
    works/benefits-of-choice/ (last visited Aug. 23, 2021).
    4
    the electricity plus a reasonable return.” The Commission is tasked with determining “the
    terms, conditions, and rates of” SOS. PU ⸹ 7-505(b)(8).
    Following the enactment of the Competition Act, the Commission began working
    with electric utility companies, including BGE, to implement the Competition Act and
    provide SOS in Maryland. In 2003, the Commission, BGE, and other electric utility
    companies entered into a settlement agreement establishing a methodology to implement
    the provision of SOS to Maryland’s retail electric customers. See In re Competitive
    Selection of Elec. Supplier/Standard Offer Serv., 94 Md. P.S.C. 113, 
    2003 WL 21051678
    ,
    
    224 P.U.R.4th 185
     (2003) (“2003 Order”) (footnotes omitted). The 2003 Order provided
    that the retail price for SOS would consist of: (1) purchase power costs; (2) transmissions
    costs; (3) an Administrative Charge; and (4) taxes. 
    Id. at 3
    . The Administrative Charge
    would be composed “of a utility return component, an incremental costs component,
    uncollectibles, and an Administrative Adjustment component.” 
    Id.
     (emphasis added). The
    settlement provided that the Administrative Adjustment initially would be set at 0.9 mills
    per kilowatt hour (“kWh”). 
    Id. at 4
    .3 This reflected an offset of 1.1 mills for uncollectible
    costs in the SOS component. 
    Id. 3
    Mills per kilowatt hour (“kWh”) equals dollars per megawatt hour (“mWh”), and
    one mill is equivalent to one-tenth of one cent. See U.S. Energy Information
    Administration, Electric Power Annual 2019, U.S. Department of Energy, 171 (Feb. 2021),
    eia.gov/electricity/annual/pdf/epa.pdf.
    5
    In 2009, BGE filed a request to increase the Administrative Charge to allow it to
    recover an increase in another requirement. A Public Utility Law Judge determined, in
    part, that the Administrative Adjustment component should be eliminated.
    In 2016, after several appeals and remands with respect to the Public Utility Law
    Judge’s decision, the Commission again addressed the Administrative Adjustment. See In
    the Matter of a Request by Baltimore Gas and Electric Co. for Recovery of Standard Offer
    Serv. Related Cash Working Cap. Revenue Requirement, No. 87891, 
    2016 WL 6873349
    ,
    at *1 (Md. P.S.C. Nov. 17, 2016) (“2016 Order”).           Noting that the purpose of the
    Competition Act was “to establish customer choice of electricity supply and to create a
    competitive retail electricity supply and services,” the Commission explained:
    The Administrative Adjustment serves as a proxy for A&G [(administrative
    and general)] costs retail suppliers must include in their rates . . . which for
    the utility are embedded in BGE’s distribution rates. More directly, it places
    into SOS costs — costs that retail suppliers bear and report on FERC [Federal
    Energy Regulatory Commission] reporting forms — that are not fully
    represented by the incremental costs recovered in the Administrative Charge,
    such as: costs for billing, marketing and advertisement for customer
    acquisition; call center operations; product and price formation; hedging
    supply commitments; electronic data information; PJM membership fees;
    staffing for human resources; and policy and legal services. The
    Administrative Adjustment Component was meant to unbundle those
    incremental costs for SOS that are weaved into BGE’s distribution rates
    while also keeping the Company’s SOS prices competitive with retail energy
    suppliers’ costs and prices.
    
    Id. at *14
     (footnotes omitted).
    The Administrative Adjustment Component and the Incremental Cost Component
    represent BGE’s costs to provide SOS. SOS providers, however, “intermingle incremental
    costs from SOS service with distribution service.” 
    Id.
     The Commission concluded that
    6
    “elimination of the Administrative Adjustment Component would cause BGE distribution
    customers to subsidize costs for BGE customers who receive SOS services,” and it “would
    put energy retailers at a slight disadvantage and on an uneven playing field relative to
    BGE.” 
    Id. at *16
    . Accordingly, the Commission determined that “[o]ne of the best ways
    to ensure that retail suppliers’ prices remain competitive with BGE’s SOS [was] to factor
    into BGE’s SOS prices the costs that retailers pay and place into the SOS rate, which BGE
    receive[d] from its embedded distribution rates.” 
    Id.
    On the record before the Commission at that time, however, it was “unable to glean
    what a reasonably precise Administrative Adjustment should be.” 
    Id.
     Accordingly, it set
    the Administrative Adjustment rate at 0.0 mills per kWh, and it ordered that
    [t]he issue of the precise amount of the Administrative Adjustment
    Component should be taken up in connection with BGE’s next general rate
    case, in which a cost of service study should be presented to reflect more
    precisely which costs should be properly allocated in distribution rates and
    which costs should be properly allocated to SOS prices.
    
    Id.
    II.
    BGE’s 2019 Request to Increase Rates
    On May 24, 2019, BGE sought to increase its Maryland retail electric and gas rates
    by $81.1 million and $67.6 million, respectively, through proposed tariff revisions.
    Pursuant to PU §§ 4-203 and 4-204, BGE was required to file an application with the
    7
    Commission regarding any change in its rates.4 As part of its application, and pursuant to
    the Commission’s 2016 Order, BGE included a completed cost of service study.
    On May 29, 2019, the Commission docketed BGE’s application as Case No. 9610,
    suspended BGE’s proposed tariff revisions, and scheduled a pre-hearing conference. In
    the Matter of the Application of the Baltimore Gas and Electric Company for Adjustments
    to its Electr[i]c and Gas Base Rates, 89138, 
    2019 WL 2327760
     (Md. P.S.C. May 29, 2019).
    On June 27, 2019, the Commission held a pre-hearing conference. The Maryland Office of
    People’s Counsel (“OPC”) and Commission Technical Staff (“Commission Staff”) entered
    their appearance. ESC filed a petition to intervene, which the Commission granted.5
    4
    In pertinent part, Md. Code Ann., Pub. Util. (“PU”) § 4-203 (2018 Supp.) provides
    as follows:
    (a) Unless otherwise ordered by the Commission, a public service company
    may not establish a new rate or change in rate unless the public service
    company:
    (1) provides to the Commission notice of the new rate or change in
    rate at least 30 days before the new rate is established or current rate
    is changed; and
    (2) publishes the new rate or change in rate in accordance with § 4-
    202 of this subtitle during the entire 30 day notice period in new
    schedules or plainly indicated amendments to existing schedules.
    PU § 4-204 (2010 Repl. Vol.) states, in pertinent part, as follows: “(a)(1) The Commission
    may suspend, effective immediately and without formal proceedings, any new rate or
    change in rate proposed by a public service company.”
    5
    In addition to ESC, Maryland Energy Group, W.R. Grace & Co., H.A. Wagner,
    LLC, C.P. Crane, LLC, the United States Department of Defense and other Federal
    Agencies, and Walmart, Inc., petitioned to intervene and were made parties to the case.
    These other entities are not parties to this appeal.
    8
    During the course of the case, BGE, ESC, Commission Staff, and OPC retained
    experts who filed prepared direct, rebuttal, and surrebuttal testimony. BGE’s 2019 request
    to increase its electric and gas base rates dealt with more than the setting of the
    Administrative Adjustment rate, but because only the Administrative Adjustment rate is
    relevant to this appeal, we will limit our discussion to the testimony that was relevant to
    the Administrative Adjustment.
    A.
    Prepared Direct Testimony
    On May 24, 2019, BGE filed the prepared direct testimony of its expert witness,
    Jason Manuel, a Certified Public Accountant (CPA) and manager of BGE’s Revenue
    Policy Division. The other parties’ witnesses filed their prepared direct testimony with the
    Commission on September 10, 2019. The ESC presented testimony from Frank Lacey, an
    independent consultant with 25 years’ experience, and Chris Peterson, a CPA and an
    independent consultant specializing in forensic accounting. David Hoppock, the Assistant
    Director of the Commission’s Electricity Division, testified on behalf of Commission Staff,
    and Clarence Johnson, an independent consultant with 35 years’ experience as a regulatory
    analyst, testified on behalf of OPC.
    1.
    BGE
    Mr. Manuel testified that, with respect to the Administrative Adjustment
    Component of the SOS Administrative charge, he conducted a cost of service study, which,
    as ordered by the Commission, would “reflect more precisely which costs should be
    9
    properly allocated in distribution rates and which costs should be properly allocated to SOS
    prices.”   He noted that “[t]he Administrative Adjustment component of the SOS
    Administrative Charge represents a proxy for certain costs incurred by third-party electric
    suppliers to provide electric supply to their customers not otherwise included in SOS rates,”
    and the purpose of the “Administrative Adjustment is to better align BGE’s total SOS price
    with the electric supply market price, thus ‘leveling the playing field’ between the
    Company and alternative suppliers.”
    Mr. Manuel stated that his analysis followed standard utility cost-causation
    principles and recognized that “all incremental costs incurred to provide SOS are currently
    functionalized to the SOS Administrative Charge,” through the Incremental costs
    component. Mr. Manuel “identified the following types of non-incremental costs and cost
    centers as supporting SOS: billing (including the billing system), credit & collections,
    customer call center, regulatory, accounting, and legal.” Those costs were tracked in the
    Company’s general ledger, allowing costs to “be functionalized [allocated] to SOS.”
    With respect to billing costs allocated to SOS, BGE used a revenue percentage.
    With respect to the call center, BGE used data from its interactive voice response system
    to determine the percentage of calls relating to billing, credit and collections, and it then
    looked at percentages for distribution expenses and revenue. With respect to regulatory,
    accounting, and legal expenses, the individuals were asked to identify their SOS-related
    tasks and the time they spent on each activity. Mr. Manuel also “allocated all SOS-
    10
    functionalized costs between SOS customer classes on a sales volume basis.” The four
    classes are “Residential, Type I, Type II, and Hourly-Priced Service.”6
    Although the Administrative Adjustment was intended to represent a proxy for the
    costs incurred by third-party electric suppliers, those costs could not be known “due to their
    competitively sensitive nature.” Mr. Manuel stated that “the allocated costs approach taken
    by BGE provides a rational foundation for setting a just and reasonable Administrative
    Adjustment for the indefinite future.”
    Mr. Manuel’s approach resulted in an Adjustment rate of 0.99 mills per kWh across
    all four of BGE’s customer classes. Mr. Manuel rounded up the recommended rate to 1.0
    mill per kWh to acknowledge “that the cost of service study the Company performed is not
    surgically precise but can be used by the Commission to set the Administrative Adjustment
    at a reasonable level for years to come, pending the need for another study.” A rate of 1.0
    mill per kWh represented an “11% increase since the Administrative Adjustment was first
    set at 0.90 mills per kWh.”
    2.
    ESC
    Mr. Lacey testified regarding ESC’s interest in the rate case, stating that they were
    competitive electric and gas supply businesses in Maryland that compete with SOS. They
    6
    “Type I customers are small-usage residential and commercial consumers. Type
    II customers are larger-usage commercial consumers.” Severstal Sparrows Point, LLC v.
    Pub. Serv. Comm’n of Maryland, 
    194 Md. App. 601
    , 606 (2010). “Because BGE procures
    electricity supply for Type I and Type II SOS customers at separate auctions, the price
    charged for electricity supply usually differs between the two classes of customers.” 
    Id. 11
    wanted to ensure that BGE’s rates for SOS “reflect the full cost of providing that service,
    so that customers are able to make more accurate comparisons when shopping for
    electricity supply.”
    Mr. Lacey described his understanding of the Administrative Charge and
    Administrative Adjustment component as follows:
    The Administrative Charge is generally made up of two types of costs. The
    first is the direct costs associated with providing SOS. These costs include
    working capital, bad debt and a return to shareholders. The direct costs of
    providing SOS are not included in distribution rates because they are not in
    any way related to distribution service. The other category of costs is indirect
    costs, or shared costs, of resources that serve both the distribution business
    and SOS. A portion of the indirect costs is allocated to the Administrative
    Adjustment component of the Administrative Charge. However, in making
    this allocation, costs are not removed from the distribution business. As BGE
    collects SOS revenues from customers, including the Administrative
    Adjustment, it is temporarily “over-collecting.” However, it then credits all
    of the Administrative Adjustment collections back to distribution customers.
    Without the crediting mechanism, BGE would over-collect every month.
    Mr. Lacey testified that BGE had “not followed long-standing traditional cost
    allocation methodologies in determining the costs that should be allocated to the
    Administrative Adjustment.” It had failed to fully allocate costs that are incurred to provide
    SOS by omitting major cost categories and understating other cost allocations, which
    resulted in it “using revenues collected through distribution rates to subsidize standard offer
    service.”   The “major cost categories” omitted included “administrative and general
    expenses, such as the costs of information technology (“IT”) and human resources (“HR”).
    Moreover, it had “failed to fully allocate costs from the accounting, regulatory and legal
    functions required to support SOS.” He explained:
    12
    Because BGE has included many of its costs of providing SOS in its
    distribution rates, distribution customers are subsidizing SOS service and all
    shopping customers are over-paying distribution rates. The subsidy results
    in an SOS rate that is too low and unfairly biases customers toward standard
    offer services, and a distribution rate that is above what a cost-based rate
    should be. When costs of providing SOS, which are currently embedded in
    distribution rates, are properly recovered through the SOS rate, distribution
    customers will no longer be subsidizing SOS. The elimination of this subsidy
    will improve the retail market, thereby giving customers more competitive
    supply options.
    Mr. Lacey explained the difference between assigning and allocating costs, stating
    that “[c]osts can generally be divided into two categories – direct and indirect. Direct costs
    are assigned. Indirect costs are allocated. Direct costs should be ‘assigned’ to the business
    unit that incurs the cost.” To “determine if a cost is a direct cost,” one could “evaluate
    whether or not it would go away if the product or service goes away.” In contrast, indirect
    costs are those that are “incurred for more than one purpose,” such as administrative and
    general costs, i.e., office supplies and executive salaries.
    Mr. Lacey testified that improper allocation of costs to SOS harms consumers in
    several ways. It “harms consumers on SOS because it prevents them from being able to
    make a fair comparison to alternatives that may in fact offer real value to these customers,
    and it obscures the appropriate price signal, potentially resulting in over-consumption.”
    Mr. Peterson testified that, with respect to the Administrative Adjustment
    Component, BGE’s analysis was “flawed” because it had not properly allocated costs
    related to SOS. He recommended increases to the Administrative Adjustment that were
    consistent with “sound financial accounting cost allocation methodologies, and best
    practices across a wide variety of industries.”
    13
    Mr. Peterson stated that BGE’s proposed Administrative Adjustment of 1.0 mill per
    kilowatt hour amounted to one-tenth of one cent. He agreed with Mr. Lacey that, in making
    its calculation, BGE failed to include certain cost categories, and it significantly
    understated costs in the categories it did include.
    BGE listed a total of eight cost categories: (1) Billing System Amortization
    Expense; (2) Billing System Unamortized Costs; (3) Credit & Collections; (4) Billing; (5)
    Call Center; (6) Regulatory; (7) Accounting; and (8) Legal. Although Mr. Peterson did not
    take issue with the inclusion of those eight categories, he testified that other categories of
    costs should have been part of the calculations, including Information Technology, Human
    Resources, Customer Service and Depreciation.
    Moreover, Mr. Peterson stated that several cost categories included were
    understated. Although he found the allocation for the first three categories to be reasonable,
    and he could not find a better allocation for the accounting costs, he discussed how other
    costs were understated. The costs for call center allocations, based on the number of calls
    answered by category, understated the actual cost because BGE considered only collection
    calls and billing inquiry calls as relevant to SOS, but it failed to consider other calls, such
    as those categorized as “Energy Assistance and Start, Stop Move Service [that] would
    necessarily involve SOS.” Mr. Peterson testified that costs allocated to call center expenses
    should be $4,013,555, as opposed to the $2,655,323 allocated by BGE. With respect to the
    cost allocation for Regulatory, Accounting, and Legal Expenses, Mr. Peterson stated that
    14
    BGE’s allocation of $106,253 in expenses was arbitrary. Using a percent of commodity
    revenue allocator, he proposed allocations of $2,364,578 to SOS for those expenses.7
    After recomputing the costs, Mr. Peterson recommended allocating $173,074,451
    of costs to the Administrative Adjustment, as compared to BGE’s proposed $12,324,792.
    In most categories, he calculated the allocation based on a 45.60% of electric commodity
    revenue to total electric operating revenue.8 Based on these figures, he recommended an
    “administrative adjustment of 11.82 Mills per kWh for the residential customer class and
    21.06 Mills per kWh for the commercial and industrial customer classes.”
    3.
    Commission Staff
    David Hoppock, Commission Staff’s Assistant Director of the Electricity Division,
    summarized BGE’s proposal, as follows:
    Billing system, billing, and credit and collections costs are separated between
    electric distribution and SOS functions based on the percent of billed SOS
    revenue relative to all electric operating revenues (2018 data). For call center
    costs, BGE first determines the percentage of calls related to billing and
    credit and collections, next BGE multiplied this by the percent of bill SOS
    revenue relative to all electric operating revenues (2018 data) to separate
    costs between electric distribution and SOS functions. For regulatory,
    accounting, and legal costs BGE analyzed the amount of time spent on SOS
    by BGE employees to determine the separation between electric distribution
    and SOS functions. BGE then allocated costs functionalized to SOS between
    SOS rate classes based on 2018 sales by SOS class. This method results in
    the same Administrative Adjustment rate, $0.00099 per kWh for all SOS
    7
    As indicated, he did not change BGE’s allocation for accounting costs because he
    did not have sufficient data available.
    8
    Mr. Peterson used a lower percentage for the categories of call center, accounting,
    depreciation and amortization.
    15
    rates classes. BGE proposes to round this value up to $0.001 per kWh.
    [(Footnotes omitted.)]
    Mr. Hoppock stated that he had “not yet conducted a full review of all costs BGE
    separates between the electric distribution and SOS functions.” Despite this, he found “the
    calculations and methods BGE use[d] to separate costs between electric distribution and
    SOS functions to be reasonable at this time.” He also agreed with the total costs of
    $12,324,792 proposed by BGE.9 He was, however, “concerned that the method BGE
    use[d] to allocate SOS Administrative Adjustment costs between SOS classes [did] not
    follow cost causation for some cost categories.” He also recommended that, instead of
    reimbursing distribution customers for SOS Administrative Adjustment costs allocated to
    SOS but also recovered from distribution rates, BGE should remove these costs from
    distribution rates.   He recommended that the Commission require BGE to file an
    adjustment to distribution rates at the conclusion of the case.
    4.
    OPC
    Mr. Johnson, who was retained by the OPC, recommended that the Commission
    reject BGE’s request to increase customer charges. With respect to the Administrative
    9
    As discussed, infra, in Commission Staff’s rebuttal testimony, Mr. Hoppock
    increased its allocation of costs to $15,123,164 by adding additional cost categories, such
    as FERC accounts. In Commission Staff’s surrebuttal testimony, it again increased its
    allocation, this time to $16,150,367, by increasing the amounts allocated to certain cost
    categories and adding several other cost categories. In Commission Staff’s subsequent
    rejoinder/settlement testimony, certain costs that BGE asserted had been double counted
    by Commission Staff were eliminated, and Mr. Hoppock proposed to allocate $15,920,967
    to the Administrative Adjustment.
    16
    Charge for SOS, he did not agree with BGE’s proposal because it resulted “in a 51%
    increase in the current administrative charge applied to customers on SOS,” and “the
    increase [would] impact a substantial number of customers within the residential class.”
    Mr. Johnson also noted that BGE had not tried to determine whether its charge was
    “comparable to administrative costs incurred by competitive suppliers” or “charges
    assigned to comparable standard offer service rates in other states.” He testified that a fee
    that was too high could lead to competitive market suppliers viewing the SOS rate as a
    “price umbrella,” which could “result in non-competitive behavior to the detriment of
    consumers.” He also noted that an obligation imposed on an SOS provider could be viewed
    as a handicap, given that it must be available to all customers, even those dropped or denied
    by competitive retailers due to credit or payment issues.
    B.
    Prepared Rebuttal Testimony
    On October 4, 2019, witnesses for all parties filed prepared rebuttal testimony with
    the Commission. Beginning with BGE, we shall address relevant portions of the parties’
    testimony.
    1.
    BGE
    Mr. Manuel reiterated that all incremental costs related to SOS were already
    allocated to SOS and included in the SOS Administrative Charge. In performing its cost
    of service study, BGE allocated the non-incremental electric distribution costs that support
    SOS, with its eye on the Commission’s objective “to better align the costs included in
    17
    BGE’s total SOS price (of which the Administrative Adjustment is a component) with the
    costs borne by electric suppliers, and therefore keep SOS ‘priced competitive with retail
    suppliers’ costs and prices.’”
    Mr. Manuel summarized the various positions of the parties with respect to the
    proposed Administrative Adjustment with the following chart:
    The rates recommended by both BGE and Commission Staff were based on non-
    incremental costs of $12.3 million to be functionalized to SOS rates. The difference
    between their recommendations was that BGE’s proposed rates were based on an allocation
    of costs by sale volume, whereas Commission Staff’s proposed rates incorporated different
    allocations. ESC’s proposed rates were based on indirect costs of $173.1 million, which
    resulted in ESC recommending functionalization of more than ten times the cost that BGE
    and Commission Staff proposed.
    Mr. Manuel also noted that, in comparison to the original Administrative
    Adjustment rate of 0.9 mills per kWh, BGE’s proposed rate of 1.0 mills per kWh
    represented an 11% increase, Commission Staff’s proposed rate of 1.11 mills per kWh was
    18
    a 23% increase, and ESC’s proposed rates of 11.82 mills per kWh and 13.89 mills per kWh
    represented a 1,213% and 1,443% increase, respectively. Mr. Manuel characterized the
    11% and 23% increases as “modest increases from the original rates first implemented,”
    but ESC’s rate, which was more than a 1,000% increase from the rate implemented as part
    of the earlier settlement agreement, was an “outlier.”
    Mr. Manuel testified that ESC’s arguments were premised on the assumption that
    the electric supply market was not healthy and that BGE’s SOS price was not at a market
    price. This premise, however, was undercut by statistics regarding electric customer
    choice, which showed that, as of August 2019, 24% of BGE’s residential customers
    obtained “electric supply from 67 active retail electric suppliers.” “The percentage of
    commercial and industrial customers choosing third-party electric suppliers is even more
    robust, nearly reaching 100% for BGE’s largest SOS customer class.” Thus, there did not
    need to be a 1,000% increase in the Administrative Adjustment rate to achieve a “market
    price” for SOS.
    Mr. Manuel noted that Mr. Hoppock agreed that BGE’s separation of costs between
    electric distribution and SOS functions was reasonable, but he recommended two
    adjustments regarding the allocation of costs among SOS customer classes. He did not
    oppose Commission Staff’s two recommended allocation adjustments, although he
    believed BGE’s proposed allocators were reasonable.
    The Administrative Adjustment was intended to serve as a proxy for costs that retail
    suppliers must include in their rates, and although ESC criticized BGE’s proposed rate, it
    had not provided, and refused to provide, “any insight into the actual costs that electric
    19
    suppliers incur to provide their service.” If “ESC believe[d] that BGE’s proposed rates
    [were] too low,” then ESC should have provided actual cost information to substantiate its
    belief that the Administrative Adjustment rates needed to reflect an increase of more than
    1,000%.
    Mr. Manuel stated that ESC’s recommendation that $173.1 million of non-
    incremental costs be allocated to SOS was “nonsensical.” It allocated an unreasonably
    large percentage of electric distribution “cost pools” to SOS. For example, it allocated
    close to $80 million of electric depreciation and amortization expenses, and $60 million of
    administration and general overhead, despite that the SOS business is “neither capital-
    intensive nor labor intensive.” He explained:
    At its core, BGE is a capital-intensive gas and electric distribution and
    transmission utility with more than 3,000 full-time employees. BGE’s SOS
    service, on the other hand, utilizes two (2) full-time back office employees
    exclusively, along with a handful of employees on a partial basis, that
    charged a total of $700 thousand of labor and fringe benefits to SOS as
    incremental costs in 2018. ESC’s proposal to functionalize $173.1 million of
    indirect costs to SOS customers is simply illogical.
    Mr. Manuel disagreed with ESC’s assertion that, to arrive at a market price, it had
    to include all categories of costs mentioned in the Commission’s 2016 Order, noting that
    BGE does not incur SOS “marketing/advertising costs” or “hedging supply commitment
    costs.” Mr. Manuel also noted that BGE had included cost categories not specifically
    mentioned in the 2016 Order, such as costs for credit collections and accounting.
    With respect to ESC’s reliance on BGE’s Cost Allocation Manual and the National
    Association of Regulatory Utility Commissioners’ (“NARUC”) Guidelines for Cost
    Allocations and Affiliate Transactions, Mr. Manual stated that ESC demonstrated a
    20
    “fundamental misunderstanding of the purpose of th[o]se documents,” which relate to
    affiliate transactions, not SOS cost allocation. Moreover, the NARUC Manual states that
    “[t]he classification and treatment of the joint and common costs requires considerable
    judgment in an embedded cost of service Study.” (NARUC Electric Utility Cost Allocation
    Manual at 15, issued January 1992). Consistent with that approach, he “applied [his]
    professional judgment to prepare a cost of service study which functionalized indirect costs
    that support SOS to the Administrative Adjustment.”
    Mr. Manuel stated that BGE did not try to “keep SOS prices artificially low in order
    to take advantage of any perceived incentive to retain SOS customers.” Rather, BGE
    advocated for an Administrative Adjustment that results “in a market price for SOS.”
    Once the Administrative Adjustment rate is set and included in the SOS
    Administrative Charge, BGE will credit that amount to all distribution customers. ESC
    agreed with that approach, but Commission Staff recommended resetting base rates, which
    Mr. Manuel thought to be “overly complicated and unnecessarily burdensome.”
    2.
    ESC
    Mr. Lacey stated that Commission Staff had “not done a full review of the costs that
    BGE allocates to the distribution and SOS functions,” and if it had, it would have been
    clear that BGE “omitted major cost categories and significantly understated other cost
    allocations to SOS.” Because Commission Staff had not conducted a full cost study, Mr.
    Lacey urged the Commission to disregard Mr. Hoppock’s testimony. Mr. Lacey also stated
    that Commission Staff’s characterization of BGE’s Administrative Adjustment rate as
    21
    “reasonable” was not the proper standard, noting that the order required BGE to conduct a
    study “to reflect more precisely which costs should be properly allocated in distribution
    rates and which costs should be properly allocated to SOS prices.” Moreover, the 2016
    Order identified specific costs to be included in the SOS rates, many of which were not
    included on BGE’s proposal, such as Administrative and General (“A&G”) expenses. Mr.
    Lacey’s concern with Mr. Hoppock’s approach was that he overlooked shared costs to be
    allocated to SOS, but he did not have any concern with the proposal to allocate costs
    differently to different categories of customers once the “bucket of costs is defined.”
    With respect to Mr. Johnson’s testimony, he “simply oppose[d] the implementation
    of the Administrative Adjustment,” a position the Commission had already rejected in
    requiring BGE to present a cost of service study. Mr. Lacey next addressed Mr. Johnson’s
    objection to BGE’s proposal for an Administrative Adjustment of 1.0 mills per kilowatt
    hour because it represented a 51% increase in the current Administrative Charge, which
    would impact customers. He stated that was not a valid objection because “the actual
    increase of one-tenth of a cent equates to about 1.3 percent of the total energy charge and
    less than 1 percent of the total current charges on a customer’s bill.”
    Mr. Lacey argued that the Administrative Adjustment should be increased
    significantly from BGE’s proposal, which did not reflect a fully-allocated cost analysis that
    included costs incurred to provide SOS. This “violates the general rate making principle
    of cost causation by failing to completely allocate costs between supply and distribution
    categories.”
    22
    3.
    Commission Staff
    Mr. Hoppock amended his proposed Administrative Adjustment rate, increasing the
    total amount functionalized to the Administrative Adjustment from $12,324,792 to
    $15,123,164. The increase was the result of increasing the amount allocated to Call Center,
    as well as adding seven cost categories to the Administrative Adjustment: (1) FERC
    Account 909; (2) FERC Account 910; (3) Additional FERC Account 920 Expenses; (4)
    FERC Account 921; (5) FERC Account 923; (6) FERC Account 930.2; and (7) General
    Plant Depreciation Amortization Account 391. With respect to call center costs, Mr.
    Hoppock agreed with ESC that calls relating to energy assistance and Start, Stop, and Move
    calls should be allocated to SOS because retail suppliers incur these types of Call Center
    costs.
    With respect to FERC Account 909 (informational and instructional advertising
    expense), FERC Account 930.2 (miscellaneous general expenses), and General Plant
    Depreciation Amortization Account 391 (office furniture, furnishing, and equipment), Mr.
    Hoppock recommended allocating the expenses in those cost categories “based on
    revenue” because retail suppliers likely incurred those types of costs.10 With respect to
    FERC Account 910 (miscellaneous customer service expenses), FERC Account 920
    (administrative and general salaries), FERC Account 921 (office supplies expenses), and
    10
    With respect to Account 391, Mr. Hoppock further explained that, although the
    allocation should be based on revenue, he proposed to further “take the percentage of the
    allocated Account 391 SOS plant relative to total general plant to determine the general
    plant depreciation and amortization expense that should be allocated to SOS.”
    23
    FERC Account 923 (outside services employed), Mr. Hoppock noted that BGE identified
    portions of those cost categories as supporting SOS, and therefore, he recommended
    characterizing those accounts as incremental costs directly assigned to SOS. With respect
    to FERC Account 920 (administrative and general salaries), Mr. Hoppock noted that BGE
    had included $106,253 in incremental regulatory, accounting, and legal costs in the SOS
    Administrative Adjustment. He added $68,459 in additional incremental costs that “should
    be characterized as incremental costs directly assigned to SOS.” Mr. Hoppock proposed
    allocating costs regarding Account 930.2, miscellaneous general expenses, including
    “labor and expenses incurred in connection with general management of the utility not
    included in other accounts,” because, although BGE said it did not incur any such SOS
    costs, “other retailers, suppliers do incur general management expenses.”             He
    recommended allocating this account based on revenue.
    The following table, which Mr. Hoppock included in his prepared rebuttal
    testimony, broke down Commission Staff’s proposed changes to the allocation of several
    cost categories to the Administrative Adjustment:
    24
    4.
    OPC
    Mr. Johnson disagreed with the allocation method relied upon by Commission Staff,
    asserting that “the allocation methods recommended by Mr. Hoppock for the SOS classes
    are not consistent with the method (commodity revenues) used to allocate the cost
    components to SOS.” He testified that ESC’s proposal to allocate over $173 million to the
    Administrative Adjustment was “excessive on its face,” and its proposed fully distributed
    cost analysis was “not consistent with standard practices for electric utility cost of service
    studies and inappropriately assigns distribution cost categories to SOS without any clear
    connection between the costs and SOS service.” He also noted that ESC’s proposal to
    allocate 46% of BGE’s administrative and general costs to SOS was not consistent with
    25
    the NARUC Cost Allocation Manual (“CAM”) because “methods prescribed by the
    NARUC [CAM] would assign little, if any, cost to SOS.”
    Additionally, Mr. Johnson asserted that the process ESC’s witnesses employed was
    “incomplete,” explaining: “The proposed quantification of the administrative adjustment
    is incomplete because it stops at assigning utility costs to SOS without also recognizing the
    benefits that other competitive suppliers receive from the utility cost.” To remedy this
    issue, he proposed adding a “third bucket for costs related to competitive suppliers.”11
    C.
    Prepared Surrebuttal Testimony
    On October 22, 2019, witnesses for BGE, ESC, and Commission Staff filed
    prepared surrebuttal testimony with the Commission.          OPC did not file surrebuttal
    testimony.
    1.
    BGE
    Mr. Manuel stated that a “full unbundling of BGE’s distribution cost of service”
    was complex, and it was not required “to achieve the goal of the Administrative
    Adjustment, which is to serve as a proxy for certain costs incurred by retail suppliers but
    included in BGE’s distribution rates.” He explained that, although the “reference point”
    11
    As an example of a cost that should be placed in a third bucket, Mr. Johnson
    pointed to call center costs. He argued that “BGE’s call center also receives calls from
    customers of competitive suppliers or from customers with questions about retail choice.”
    Accordingly, “SOS customers would be paying more than their fair share because they
    would be paying for the SOS portion of the costs through SOS rates and paying for the
    retail supply portion of the costs through their distribution rates.”
    26
    was levels of costs incurred by retail suppliers, BGE examined its costs “because better
    retail supplier financial information was not available.”
    With respect to Commission Staff’s proposal to increase the total amount allocated
    to SOS in the Administrative Adjustment from $12,324,792 to $15,123164, Mr. Manuel
    asserted that Commission Staff erred in two ways. First, Commission Staff “propose[d] to
    functionalize certain additional costs without considering proper cost allocation
    principles.” Second, Commission Staff “double-count[ed] costs that were already included
    in the original $12.3 million,” such as “administrative and general (A&G) expense FERC
    Accounts.” He addressed specific categories of costs, including why his allocation of call
    center and other costs was appropriate. He did agree with Commission Staff’s conclusion
    that a portion of FERC Account 391, Office Furniture and Equipment, should be
    functionalized to SOS, but he noted that the amount, $0.1 million, was “effectively already
    accounted for in [his] recommendation to round [his] proposed SOS Administrative
    Adjustment rates from 0.99 mills per kWh to 1.00 mills per kWh.” He reiterated his
    recommendation to approve the Administrative Adjustment rates to which he previously
    testified. He did not object to Commission Staff’s recommended customer class allocation
    adjustments, but he rejected its recommendation of costs of $15.1 million.
    With respect to ESC’s proposal to significantly increase Administrative Adjustment
    rates, Mr. Manuel argued that this was inconsistent with the statement in the 2016 Order
    that “elimination of the Administrative Adjustment Component would put energy retailers
    at a slight disadvantage and on an uneven playing field relative to BGE.” Moreover, if the
    SOS “Administrative Adjustment rates were in need of the massive rate increases proposed
    27
    by ESC, it is doubtful that the Commission would have set the rate at 0 mills/kWh until a
    ‘reasonably precise Administrative Adjustment’ could be determined in a future case.”
    Indeed, Mr. Manuel stated that the retail supply market was “quite robust,” which
    supported the reasonableness of BGE’s proposal. He stated that ESC had failed to justify
    the allocation of approximately $80 million in electric distribution depreciation expenses
    and another $60 million in A&G overhead costs where “the SOS business is neither capital-
    intensive nor labor-intensive.” In sum, “ESC did not provide cost causation arguments that
    would support the excessive amount of costs they proposed to functionalize to SOS.”
    Finally, addressing OPC’s rebuttal testimony, Mr. Manuel stated that Mr. Johnson’s
    argument favoring a “third bucket” of costs was interesting and warranted further review.
    Such a proposal, however, could more adequately be considered in a “Phase II proceeding.”
    2.
    ESC
    Mr. Lacey’s surrebuttal testimony, in response to BGE and OPC rebuttal testimony,
    noted that, “[n]one of the witnesses [say] that a fully allocated approach to ratemaking is
    inappropriate” or suggest that “any of the cost categories identified by ESC are inaccurate.”
    He stated that ESC’s “solution does not increase costs. It only moves costs into different
    buckets.   BGE acknowledged that the Administrative Adjustment, if implemented
    correctly, will keep BGE and ratepayers financially neutral no matter the size of the
    allocation to the Administrative Adjustment.”
    Mr. Lacey stated that “[t]he Commission should compel a full allocation of costs to
    SOS before approving BGE’s proposed increased rates,” asserting that “Mr. Manuel did
    28
    not capture non-incremental costs such as office space, furniture, supplies, and office
    equipment, all of which [were] utilized in the delivery of SOS,” and “[e]xcluding such
    basic business expenses . . . is simply not a complete or ‘more precise’ reflection of the
    cost that should be allocated to the SOS business.” He stated that the differences among
    the parties’ proposed Administrative Adjustments were “the direct result of BGE and
    Commission Staff failing to use a fully-allocated cost approach, which has been a
    fundamental premise of utility ratemaking for decades.”
    Mr. Lacey explained that, if a “resource is used for both services, the costs of that
    resource should be allocated, in an appropriate manner, to those services.”           It was
    “unfathomable to suggest that a $1 billion SOS business would incur no IT costs to serve
    over 800,000 customers. Similarly, it could not operate without paying rent or purchasing
    office supplies.” “BGE ha[d] offered no rationale for not allocating even the most basic
    business expenses to its SOS business,” and its analysis was “simply lacking.”12
    12
    When asked about Mr. Manuel’s assertion that ESC had not provided costs that
    other electric suppliers incurred, Mr. Lacey responded:
    This proceeding is not about the costs that are incurred by competitive
    retailers. Rather, it is about whether BGE’s rates, and its underlying cost
    allocations, are just and reasonable. In order for BGE’s rates to be just and
    reasonable, they must, at a minimum, reflect a proper allocation of costs
    among all functions. Given that BGE has not used a fully-allocated cost
    approach, its proposed rates are not just and reasonable. I understand that
    the Commission in Case No. 9221 described the Administrative Adjustment
    as serving a proxy for A&G costs that retail suppliers must include in their
    prices. However, the Commission did not say that actual supplier costs
    should be considered. Instead, the Commission found that certain cost
    categories that would be incurred by competitive suppliers should be
    included in the SOS rate.
    29
    Mr. Lacey disagreed with Mr. Manuel’s assessment that the competitive retail
    electric market was “healthy,” given that more than 75% of BGE’s residential customers
    were receiving their electric supply from BGE, and there were 67 retail electric suppliers
    operating in the market. “By not allocating costs to SOS, BGE is able to keep its cost
    below the market price of retail electricity service.”
    Mr. Lacey also disagreed with OPC’s assertion that a “third bucket” was required,
    stating that such a proposal was “fatally flawed” because “BGE’s costs are not and should
    not be based on ‘benefits’” received by retail customers, but rather, “they should be based
    on cost-causation principles.” Moreover, “[t]he costs that BGE incurs to operate the market
    benefit all customers, not just customers of competitive energy suppliers.”
    Mr. Peterson noted that, with respect to the original eight categories BGE included
    in calculating the Administrative Adjustment, the calculations by BGE, Commission Staff,
    and ESC were “relatively close,” although ESC added costs for regulatory and legal costs.13
    Mr. Peterson provided the following table to illustrate this point:
    13
    As discussed, supra, these cost categories were (1) Billing System Amortization;
    (2) Billing System Unamortized; (3) Credit & Collections; (4) Billing; (5) Call Center; (6)
    Regulatory; (7) Accounting; and (8) Legal.
    30
    Although Commission Staff had allocated additional categories of costs to SOS, as
    reflected in Mr. Hoppock’s rebuttal testimony,14 ESC did not agree with the amounts
    allocated and thought additional cost components should be added. Three additional tables
    illustrated where BGE, Commission Staff, and ESC differed:
    14
    The number listed in the above chart for Commission Staff was less than the
    $15,123,164 given by Mr. Hoppock in his amended proposed Administrative Adjustment
    because it reflected only the first eight categories of costs.
    31
    Mr. Peterson also included a fifth table, which included a summary of the cost
    components reflected in the other four tables:
    3.
    Commission Staff
    In his surrebuttal testimony, Mr. Hoppock recommended that the Commission adopt
    his adjusted allocation to the Administrative Adjustment costs. He explained, however,
    that after receiving more information from BGE, he increased “the allocation of call center
    costs to SOS.” This change, coupled with other changes to various cost categories,
    increased Commission Staff’s total proposed allocation to $16,150,367, as demonstrated
    by Mr. Hoppock in the following table:
    32
    As shown by the table, Commission Staff increased the proposed allocations to Call Center,
    FERC Account 910, Additional FERC Account 920 Expenses, and FERC Account 923.
    Commission Staff decreased the allocations to FERC Account 909, and it added “Load
    Profiling and Settlement Costs” as a cost category.
    Mr. Hoppock explained that he reduced the allocation to FERC Account 909
    because “retail suppliers likely [did] not incur” certain costs associated with that Account,
    such as “Educational School Programs, Seasonal Readiness (winter/summer ready),
    Safety, and Outage Education.” Mr. Hoppock increased the allocation for “Accounts 910,
    920, and 923” due to his increased allocation to the Call Center cost category.
    33
    D.
    Submitted Testimony After 2019 Settlement Agreement
    On October 25, 2019, BGE, Commission Staff, OPC, and several other parties not
    involved in this appeal (“Settling Parties”), entered into a settlement agreement (“2019
    Settlement Agreement”). This agreement provided, among other things, that BGE would
    file rate schedules “authorizing an electric base rate of $25 million, and a gas base rate
    increase of $54 million.” It resolved all contested issues except for the amount of the SOS
    Administrative Adjustment.     The Settling Parties agreed that “[a]n appropriate SOS
    Administrative Adjustment [would] be addressed in the Phase II proceeding,” and that
    additional discovery for that proceeding would begin on February 15, 2020.
    On October 28, 2019, the Commission sent the parties a Notice of Amended
    Procedural Schedule, which required additional testimony on the issue of the SOS
    Administrative Adjustment. On November 8, 2019, following the execution of the 2019
    Settlement Agreement, BGE, ESC, Commission Staff, and OPC witnesses prepared and
    submitted testimony regarding the remaining contested issue unresolved by the 2019
    Settlement Agreement, the SOS Administrative Adjustment, which also addressed
    contentions raised in surrebuttal testimony.15
    15
    Several parties titled their submissions as rejoinder testimony, as they addressed
    contentions raised in the surrebuttal testimony of the other parties.
    34
    1.
    BGE
    Mr. Manuel stated that BGE maintained its recommendation regarding SOS
    Administrative Adjustment rates. He reiterated that “the SOS Administrative Charge
    already capture[d] the incremental costs associated with providing SOS (under the
    Incremental Charge component of the Administrative Charge),” and it had conducted the
    study to “capture non-incremental costs that support SOS.”
    Although Commission Staff’s proposed Administrative Adjustment rates were “not
    unreasonable,” he believed that Commission Staff had double-counted certain costs.
    ESC’s proposed Administrative Adjustment rate, however, was “more than 10,000%
    larger” than the rate BGE and Commission Staff proposed, and it was “illogical” because
    it included costs in the Administrative Charge that BGE would incur even if it ceased its
    SOS business. For example, Mr. Lacey proposed that a greater amount of billing costs be
    allocated to SOS because BGE generated millions of invoices per year for SOS, but “every
    single one of those ‘invoices’ would be generated, and resulting payments collected, in the
    absence of SOS” because “[e]very BGE distribution customer receives a bill.” Moreover,
    “[t]he only difference between SOS and shopping customers [was] a single line item on
    that invoice.” And BGE’s proposal allocated 45.6%, $9.6 million, of electric distribution
    and collection costs to SOS in the study. Additionally, ESC proposed “to functionalize to
    SOS nearly $80 million of administrative & general overhead,” but the “SOS business is
    neither capital-intensive nor labor-intensive.” Indeed, BGE’s Incremental Cost component
    rate, which addresses “the non-energy costs BGE directly incurs as a result of providing
    35
    SOS (i.e., labor for administering the SOS auction process and managing PJM and supplier
    interactions, etc.), is currently 0.08 mills-per-kWh.” ESC failed to justify how its high
    costs could be attributed to SOS.
    2.
    ESC
    Mr. Lacey admitted that the 2016 Order did not mandate a specific “allocation
    methodology,” but he asserted that, “for the Commission to accomplish the goal that it set
    forth in [the 2016 Order] of properly allocating costs to distribution service and SOS, it
    must adopt [ESC’s] solution,” i.e., a “full unbundling and the allocation of a portion of the
    indirect costs associated with each resource that is consumed or utilized by BGE in the
    provision of SOS.” It was necessary to allocate indirect costs, as opposed to only including
    direct cost, because “[t]he purpose of the Administrative Adjustment was to capture
    indirect costs that are incurred by BGE in providing SOS.”
    With respect to the contention that the increase was too high, Mr. Lacey stated that
    the impact on SOS customers could be mitigated by phasing in the increased rates over
    time. He also noted that the size of ESC’s proposed modification to the Administrative
    Adjustment was irrelevant because indirect costs are merely reallocated, not increased.
    3.
    Commission Staff
    Mr. Hoppock interpreted the 2016 Order as requiring two types of costs to be
    factored into the Administrative Adjustment: “1) the incremental costs embedded in
    distribution rates SOS causes BGE to incur, as well as 2) a proxy for customer costs that
    36
    retail suppliers incur beyond those identified as incremental SOS costs that are currently in
    BGE distribution rates.” ESC allocated certain FERC Accounts as supporting SOS based
    solely on the description of the account, but the actual costs in those accounts may not
    support SOS. For example, ESC allocated all of FERC Account 928, but to Mr. Hoppock’s
    knowledge, the costs of that account did not support SOS. The 2016 Order “clearly state[d]
    that the Administrative Adjustment serves as a proxy for costs retail suppliers must include
    in their rates and are meant to keep SOS prices competitive with retail suppliers’ costs and
    prices.” Therefore, ESC’s proposed allocation of costs that “most retail suppliers do not
    incur, such as common plant AMI, directly conflict[ed] with the clear language of” the
    2016 Order.16
    Mr. Hoppock disagreed with BGE’s assertion that he double counted costs in FERC
    Accounts 910, 920, 921, and 923, but he did agree that there appeared to be “some
    inconsistencies between BGE responses regarding what Accounts are included in call
    16
    “Advanced metering infrastructure (AMI) is an integrated system of smart meters,
    communications networks, and data management systems that enables two-way
    communications between utilities and customers.” Office of Electricity Delivery and
    Energy Reliability, Advanced Metering Infrastructure and Customers Systems: Results
    from the Smart Grid Investment Grant Program, U.S. Department of Energy, at 4 (Sept.
    2016), https://www.energy.gov/sites/prod/files/2016/12/f34/AMI%20Summary
    %20Report_09-26-16.pdf. The purpose of AMI is to help customers cut down on
    electricity consumption. Id. In 2010, the Commission issued Order Number 83531, which,
    among other things, authorized BGE to launch its Smart Grid Initiative that implemented
    AMI, replacing the current electric meters with over 2 million “smart meters,” which are
    designed to help customers communicate with BGE to better save electricity. Public
    Service Commission, 2010 Annual Report, at 12 (https://www.psc.state.md.us/wp-
    content/uploads/MD-PSC-2010-Annual-Report.pdf).
    37
    center and billing costs in BGE’s proposed SOS Administrative Adjustment.”
    Accordingly, Mr. Hoppock provided a set of adjusted rates that omitted those contested
    FERC Accounts from the Administrative Adjustment, which resulted in an allocation of
    $15,920,967 across all four customer classes and Administrative Adjustment rates of 1.44,
    1.23, 0.47, and 0.35 mills per kWh across the Residential, Type I, Type II, and Hourly-
    Priced Service classes, respectively.
    4.
    OPC
    Mr. Johnson maintained his earlier position that none of the parties had presented
    an adequate cost analysis, and therefore, there was no way to properly allocate costs to
    SOS or the Administrative Adjustment.         He highlighted the disparity between the
    allocations proposed by BGE, Commission Staff, and ESC, asserting that the disparity
    “demonstrate[d] the frailty of precision and the wide variance in assignable costs that can
    be produced by differing methods.” If the Commission truly desired to “level the playing
    fields” between BGE’s SOS and competitive suppliers, then “the cost analyses should
    assign costs to both SOS and the competitive suppliers if both receive benefit from the
    distribution company incurring the cost.” A failure to do so could result in SOS customers
    “paying more than their fair share because they would be paying for the SOS portion of the
    costs through SOS rates and paying for the retail supply portion of the costs through their
    distribution rates.”   Avoiding this result by properly allocating costs to competitive
    suppliers, however, would require additional time and information.
    38
    Mr. Johnson noted that Commission Staff’s allocation had increased 35% since Mr.
    Hoppock originally accepted BGE’s proposed allocation to the Administrative Adjustment.
    He stated that ESC’s proposed allocation of over $173 million was “excessive and
    unreasonable.” He argued that labor, as opposed to revenue, was the proper allocator and
    was consistent with NARUC guidelines.
    E.
    Hearing Before the Commission
    On November 14, 2019, the parties and their expert witnesses appeared before the
    Commission for a hearing. The parties admitted the prepared testimony of their expert
    witnesses, and then opposing counsel and the Commission asked questions.
    1.
    Mr. Manuel
    Mr. Manuel reiterated that the cost of service study he prepared determined
    “reasonably precise administrative adjustment rates that represent a proxy of the costs that
    retail suppliers bear,” while also “ensuring that the results of [his] study supported a market
    price.” He explained why BGE’s proposed allocation did not include any HR expenses,
    stating: “BGE does not staff its HR department to specifically support SOS. To the extent
    that there are HR costs that indirectly support the costs that support SOS, if I were to
    include those costs, those costs would be nominal in nature” and “certainly would not rise
    to the level of costs that ESC proposed.” With respect to Commission Staff’s inclusion of
    other cost categories in its proposal, such as office furniture, he explained that, “to the
    extent there is furniture for the small number of employees that support SOS, my rounding
    39
    of the SOS administrative adjustment to one mill exactly, more than covered the amount
    that [Commission Staff] determined should be allocated for office furniture.” When asked
    if he believed it was “appropriate for BGE to base its SOS rates on the costs that are
    incurred by [competitive] suppliers,” Mr. Manuel responded in the affirmative, explaining
    that “the point of the administrative adjustment is to represent a proxy of those very costs.”
    Mr. Manuel, however, was not aware of any utility that set its rates based on the costs
    incurred by other competitors.
    2.
    Mr. Peterson & Mr. Lacey
    Mr. Peterson conceded on cross-examination that he had not personally conducted
    a utility cost of service study. He stated, however, that as a CPA, he had done “significant
    work in cost allocation,” and “doing cost allocations . . . is equivalent to a carpenter
    knowing how to use a saw,” i.e., it was “a common tool.” He also acknowledged that, in
    a similar case before the Pennsylvania Public Utility Commission, his arguments favoring
    a large increase in the costs allocated to default electricity service were rejected.
    Mr. Lacey stated that the costs BGE included in its proposal were non-incremental.
    He reiterated his position that “[t]he Commission ordered a fully unbundled or cost of
    service study to figure out the costs that are woven into distribution rates that support SOS.”
    3.
    Mr. Hoppock
    Mr. Hoppock stated that he used a two-step process to determine costs: (1)
    “incremental costs still in distribution rates caused by SOS,” and (2) costs that were a proxy
    40
    for costs retail suppliers incurred. It was possible that he double-counted certain costs,
    specifically accounts 910, 920, and 923.       Given his uncertainty, he deferred to the
    Commission to make a proper determination on that issue. In response to a question from
    the Commission, he agreed that the amount of potential double-counting was
    approximately $230,000.        With respect to the overall difference between his
    recommendation of costs of $15.9 million, as opposed to BGE’s $12.3 million, these
    differences included: (1) for the call center, he had costs of $5 million, as opposed to BGE’s
    cost of $2.7 million; (2) he added costs for FERC accounts 909 and 930.2; (3) “general
    plant depreciation amortization”; and (4) account 391, furniture.17
    4.
    Mr. Johnson
    Mr. Johnson reiterated his position that the administrative adjustment proposed by
    BGE be rejected. He noted that most of the SOS cost is based on periodic auctions for
    purchase power, which is “reflective of market price.” The proposal by ESC to increase
    costs allocated to SOS by $173.1 “immensely overstates the allocation administrative and
    general costs” and it includes “double counting of costs.”
    17
    FERC accounts 910, 920, 921, and 923 are the costs that BGE asserted were
    double counted.
    41
    F.
    The Commission’s Ruling
    On December 17, 2019, the Commission issued Order No. 89400 (“2019 Order”).
    After addressing other issues raised in the 2019 Settlement Agreement, the Commission
    dealt with the sole contested issue, the SOS Administrative Adjustment rate.
    The Commission thoroughly discussed the testimony presented, and it noted the
    wide range of proposals for costs for the SOS Administrative Adjustment rate, including:
    $12.3 million from BGE, $15.9 million from Commission Staff’s final position, $173.1
    million from ESC, and OPC’s proposal to not increase costs at all. The Commission noted
    that it previously had determined that retaining the Administrative Adjustment rate would
    help level the playing field between utility-provided SOS rates and competitive suppliers,
    but it “only serves as a ‘proxy’ for administrative and general costs retail suppliers must
    include in their rates, which are embedded in the distribution rates of utility companies.”
    The Commission noted that OPC’s position, to keep the SOS Administrative Rate at 0.00
    mills per kWh, was inconsistent with that prior directive.
    The Commission then addressed ESC’s proposal to allocate $173.1 million of non-
    incremental costs to SOS. It found that this proposal was “a significant departure from
    prior Commission decisions setting an appropriate Administrative Adjustment,” noting
    BGE’s argument that ESC’s proposal allocated unreasonably large amounts of percentages
    of electric distribution costs to SOS, including close to “$60 million of administrative and
    general overhead and $80 million of electric distribution depreciation and amortization
    expense,” despite that SOS is not “capital intensive” or “labor intensive.” With respect to
    42
    ESC’s argument that its proposal was the only one to fully unbundle SOS costs, the
    Commission stated that the 2016 Order “call[ed] for the SOS Administrative Adjustment
    to be reasonably precise, not a full unbundling as argued by ESC.”18
    The Commission found that BGE’s proposal was well-reasoned and followed the
    Commission’s directive. It summarized BGE’s identification of “four high level cost
    centers with non-incremental costs that support SOS,” as follows:
    Billing systems: BGE functionalized a portion of the electric distribution
    billing system costs (both amortization of the billing system and the
    unamortized costs in rate base) using a revenue allocator.
    Billing, credit & collections: BGE identified the billing and credit &
    collections projects that support SOS, then functionalized a portion of the
    electric distribution costs for those projects to SOS using a revenue allocator.
    Customer call center: BGE used data from its interactive voice
    response (IVR) system to first determine the percentage of incoming calls
    from customers that related to billing or credit & collections. BGE applied
    this percentage to the customer calls center’s electric distribution expenses
    first, and then further functionalized to SOS using the revenue allocator.
    Regulatory, accounting & legal: BGE personnel from these areas were
    asked to identify their SOS-related tasks/deliverables and then estimate time
    they spent on each activity. Based on this information, the functionalization
    factor for each area was derived by multiplying the percentage of time spent
    per employee during the year on SOS-related activities by the respective cost
    center expenses recorded in the general ledger.
    The Commission noted, however, that BGE’s approach did not include certain costs
    listed in the 2016 Order, as discussed in Commission Staff’s proposed costs, including:
    FERC Account 909 Informational and Instructional Expense, FERC Account
    910 Miscellaneous Customer Service, Account 920 Administrative and
    18
    As indicated, the Commission’s previous Order requested that a “cost of service
    study should be presented to reflect more precisely which costs should be properly
    allocated in distribution rates and which costs should be properly allocated to SOS prices.”
    43
    General Salaries, Account 921 Office Supplies and Expenses, Account 923
    Outside Services, Account 930.2 Miscellaneous General Expenses, General
    Plant Depreciation Amortization Account 391, and Load Profiling and
    Settlement Costs.
    The Commission discounted some of Commission Staff’s proposed additions, as
    follows:
    The Commission does not, however, find that Staff witness Hoppock’s
    reasoning for additional allocation of call center “Start, Stop and Move” or
    “General Business Inquiry” costs are sufficiently supported or appropriate
    and therefore rejects those additions to BGE’s cost of service allocation.
    Regarding the other additional cost categories, the Commission notes that
    BGE witness Manuel agreed that the inclusion of FERC Account 909, 930.2,
    and Load Profiling may be reasonable to allocate a portion of General Plant
    Depreciation Amortization Account 391 to SOS, as this utility account
    relates to office furniture and equipment that is used by all BGE employees,
    including the few employees directly supporting SOS activities.19 However,
    the Commission finds that Staff did not adequately support its allocation of
    costs from FERC Account 909 (Informational and Instructional Advertising
    Expense) and FERC Account 930.2 (Miscellaneous General Expense).
    These should be excluded, as none of the expenses in either account relate to
    SOS. During the hearing, Witness Hoppock conceded that he did not have
    specific documentation to support these costs but believed these were costs
    likely to be borne by retail suppliers.
    As a result of these findings, the Commission determined that the appropriate cost
    allocation method was a “hybrid approach,” which combined portions of BGE’s and
    19
    When read in conjunction with the next sentence, it appears that the Commission
    meant to refer only to FERC Account 391. The record reflects that the brief to which the
    Commission referred notes Mr. Manuel’s agreement that a portion of Account 391, office
    furniture and equipment, should be allocated to SOS, but it states that BGE’s position, and
    Mr. Manuel’s testimony, was that costs for Account 909 (Advertising) and Account 930.2
    (Miscellaneous General Expenses) should not be allocated to SOS because BGE did not
    incur any SOS costs in these Accounts, and Mr. Hoppock did not have evidence that these
    costs were incurred by other suppliers.
    44
    Commission Staff’s SOS Administrative Adjustment. It accepted the total costs for the
    hybrid approach in the following cost categories:
    Billing System Amortization Expense ($1,979,003), Billing System
    Unamortized Costs ($1,434,101), Credit & Collections ($4,409,677), Billing
    ($1,740,435) [], Call Center ($2,655,323 million), Regulatory ($81,263),
    Accounting ($14,460), and Legal ($8,530). . . . FERC Accounts 909
    ($468,811), FERC Account 930.2 ($260,175), General Plant Depreciation
    Amortization ($133,774), and Load Profiling and Settlement Costs
    ($382,097).
    Accordingly, the Commission allocated costs of $13,569,649 to SOS. It adopted
    “BGE’s ‘normalized’ allocation method, which computes the mills per kWh as the same
    across each customer class (and is computed to be 1.09 mills per kWh).” It ordered that
    BGE file tariffs “allocating a total of $13,569,649 in its indirect costs to [SOS] that are
    currently embedded in BGE’s distribution rates and set a normalized distribution SOS
    Administrative Adjustment rate of 1.09 mills per kWh.”
    III.
    Appeal to the Circuit Court
    On January 15, 2020, ESC appealed the 2019 Order, filing a Petition for Judicial
    Review in the Circuit Court for Baltimore City. On August 13, 2020, ESC filed its
    memorandum in support of its petition, requesting that the court “(1) reverse the relevant
    portions of the Commission’s decision; and (2) remand the matter to the Commission with
    instructions that it require BGE to allocate overhead costs to SOS in a manner that ensures
    the recovery of all costs incurred to provide SOS through the rate charged for that
    45
    service.”20 In its memorandum, ESC reiterated many of the arguments it raised before the
    Commission, including that the law required the Commission to set a price that was
    “market based,” and the only way to set such a price was to conduct a fully allocated cost
    of service study.
    On September 14, 2020, BGE filed a memorandum in opposition to ESC’s petition,
    arguing that the 2019 Order “was supported by substantial evidence and was not arbitrary
    or capricious.” The Commission filed its own memorandum in opposition, raising similar
    arguments.
    On October 1, 2020, the court held a remote hearing on ESC’s petition. Counsel for
    ESC argued that there were “four specific adverse results of the Commission’s decision[:]”
    (1) the distribution rates of all customers remained too high; (2) the SOS rates were too
    low; (3) competitive suppliers were forced to compete with these artificially low SOS rates;
    and (4) customers of competitive suppliers were subsidizing SOS customers. Counsel
    argued that, because of these deficiencies, the Commission erred as a matter of law in two
    ways. First, citing Severstal, ESC asserted that SOS needed to be set at a market price, and
    “[t]o comply with the market price standard, it’s necessary for the company to consider all
    of its overhead costs and look at each one and consider whether the underlying resource is
    20
    ESC presented two questions for review before the circuit court: (1) whether the
    2019 Order was “in violation of the law that establishes a market price standard in setting
    rates for the sale of electricity by the utility and otherwise arbitrary and capricious[;]” and
    (2) whether the 2019 Order was “in violation of the law that imposes a series of obligations
    on the agency to develop, monitor and correct deficiencies in the competitive retail electric
    market and otherwise arbitrary and capricious[.]”
    46
    used to provide SOS.” Second, by allowing distribution rates to subsidize SOS rates, the
    Commission violated the Competition Act and was not supporting the development of a
    competitive electricity supply market. Additionally, counsel argued that the court was not
    required to give the Commission’s decision deference because “it didn’t even give lip
    service to the market price standard,” and “the Commission ha[d] never before been
    presented with the results of a fully allocated cost study to establish a market price.”
    Counsel for the Commission argued that the 2019 Order was “well reasoned, based
    on the record, and clearly supported by substantial evidence, and was not arbitrary and
    capricious.” Furthermore, the 2019 Order resulted in a “just and reasonable rate” and “did
    not violate the Competition Act.” Counsel noted that Commission decisions were deemed
    to be prima facie correct “unless clearly shown to be unconstitutional, outside the statutory
    authority, or jurisdiction of the Commission, made on unlawful procedure, arbitrary or
    capricious, affected by other error of law, or . . . unsupported by substantial evidence of
    the record considered as a whole.” ESC could not demonstrate that the Commission
    “exercised its discretion unreasonably or without rational basis.” In support, counsel noted
    that the 2016 Order stated only that the Administrative Adjustment was a proxy for the
    costs incurred by competitive suppliers, and the Commission, after examining all of the
    testimony and data provided by the various parties, crafted its own “hybrid” approach using
    its “reasoned judgment.”
    Counsel for BGE argued that “the Commission is absolutely owed deference in this
    case.” Counsel explained that the 2019 Order is entitled to deference because it involved
    “a fact intensive inquiry,” as evidenced by the factual disputes in ESC’s own briefs. The
    47
    Commission, not ESC, “was in the best position to determine what type of cost allocation
    approach the Commission requested in its own 2016 [O]rder.”
    Prior to ending the hearing, the court asked counsel for ESC if the issue was “not so
    much that the Commission didn’t agree” with the size of ESC’s $173 million allocation,
    “but that the number that the Commission came up with was not supported by substantial
    evidence or otherwise arbitrary in the formula that they used[.]” Counsel for ESC replied:
    “That’s correct, Your Honor. It’s the method that was used, this very limited look at
    [BGE’s] overhead costs.”
    On November 18, 2020, the court issued an Order Denying Petition for Judicial
    Review. In its Order, the court found that it “must give deference to the Commission’s
    expertise and findings; even more so than that deference afforded other administrative
    agencies.” The Order then stated:
    FOUND that the law requires that the Commission establish rates that are
    “just and reasonable”; the law does not require that the Commission establish
    rates that are fair market value; and it is further
    FOUND that the record is replete with substantial evidence to support the
    Commission’s Order No. 89400. including, but not limited to, consideration
    of expert testimony (at hearings during which the witnesses were examined
    and cross-examined under oath), extensive exhibits, and legal memoranda or
    briefs. As such, any reasonable mind could have reached the conclusion the
    Commission reached. Public Service Commission v. Delmarva Power and
    Light Company, 
    42 Md. App. 492
     (1979); and it is further
    FOUND that Petitioners have failed to establish that Order No. 89400 is
    unconstitutional, outside the statutory authority or jurisdiction of the
    Commission, made on unlawful procedure, arbitrary or capricious, affected
    by other error of law, or unsupported by substantial evidence on the record
    considered as a whole. Md. Code Ann., Pub. Util. § 3-203[.]
    This appeal followed.
    48
    DISCUSSION
    As indicated, PU §7-510(c)(3)(ii)(2) “requires that the utility furnish SOS at ‘a
    market price that permits recovery of the verifiable, prudently incurred costs to procure or
    produce the electricity plus a reasonable return.” ESC contends that the “Commission erred
    as a matter of law” by not requiring BGE to charge the statutory “market price” for its SOS
    rate. It argues that, in allowing BGE to underprice SOS, the Commission failed to fulfill
    its statutory duties under the Competition Act to ensure a competitive retail market.
    ESC asserts that the “only way to establish a market price is to perform a fully
    allocated cost of service study.” It argues that BGE’s study was incomplete, and the
    Commission ignored the requirement that a market price be established for BGE’s SOS by
    its “refusal to mandate that BGE include in the SOS rate a portion of the overhead costs
    associated with each resource that BGE uses to support or provide SOS.” It argues that the
    Commission’s decision setting the Administrative Adjustment rate was arbitrary and
    capricious.
    BGE contends that the Commission has “broad statutory discretion to regulate
    BGE’s [SOS] rates,” and the “Commission’s decision to set the Administrative Adjustment
    rate at 1.09 mills per kWh was supported by substantial evidence and was not arbitrary or
    capricious.” It asserts that the approach taken by BGE and Commission Staff “followed
    traditional cost-causation ratemaking principles, in which only those costs that are
    determined to be . . . linked” to SOS are allocated, and ESC’s approach was properly
    “rejected for failing to follow the basic principle.” It notes that it was the Commission, in
    49
    its rate-setting capacity, not the General Assembly, who created the Administrative
    Adjustment.
    The Commission contends that its “decision was well reasoned based on the record,
    clearly supported by substantial evidence, and was not otherwise arbitrary or capricious.”
    It “evaluated the positions and recommendations of each party,” and after weighing all the
    evidence, it properly adopted a hybrid solution to allocate costs to SOS.
    In conducting our analysis of the parties’ contentions, we note initially that, “[i]n an
    appeal from judicial review of an agency decision, we review the agency’s decision,” not
    the decision of the circuit court. Maryland Office of People’s Counsel v. Maryland Pub.
    Serv. Comm’n, 
    461 Md. 380
    , 391 (2018). PU § 3-203 sets forth the limited scope of our
    review of the decision of the Commission, as follows:
    Every final decision, order, or regulation of the Commission is prima facie
    correct and shall be affirmed unless clearly shown to be:
    (1) unconstitutional;
    (2) outside the statutory authority or jurisdiction of the Commission;
    (3) made on unlawful procedure;
    (4) arbitrary or capricious;
    (5) affected by other error of law; or
    (6) if the subject of review is an order entered in a contested
    proceeding after a hearing, unsupported by substantial evidence on the
    record considered as a whole.
    (Emphasis added).
    This Court has explained:
    Because a final decision of the Commission is prima facie correct, it will “not
    be disturbed on the basis of a factual question except upon clear and
    satisfactory evidence that it was unlawful and unreasonable.” Office of the
    People’s Counsel v. Maryland Public Service Commission, 
    355 Md. 1
    , 14
    (1999). Indeed, if reasoning minds could reasonably reach the Commission’s
    50
    decision from the facts in the record, then the decision is based upon
    substantial evidence, and we will not reject that conclusion. Liberty Nursing
    Center, Inc. v. Department of Health and Mental Hygiene, 
    330 Md. 433
    , 442-
    43 (1993).
    Maryland Office of People’s Counsel v. Maryland Public Service Commission, 
    226 Md. App. 176
    , 190-91 (2015).
    The Court of Appeals recently gave a thorough explanation of the standard of
    review of a Commission decision, as follows:
    [T]he standard of review does not depend on whether we would reach the
    same conclusions as the Commission, but on whether the Commission’s
    decision or process is infected by the specified defects. . . .
    It has often been said that the standard of review of Commission
    decisions is “consistent with the standard of review applicable to all
    administrative agencies.” E.g., Office of People’s Counsel v. Public Service
    Commission, 
    355 Md. 1
    , 15, 
    733 A.2d 996
     (1999); Town of Easton v. Public
    Service Commission, 
    379 Md. 21
    , 31, 
    838 A.2d 1225
     (2003). The standard
    of review set forth in PU § 3-203 is certainly consistent with that applied to
    other administrative agencies under Maryland Administrative Procedure Act
    (“APA”), which does not apply to the Commission. In particular, the
    specified bases for reversing a Commission decision are the same as set forth
    for reversing an agency decision in the provision for judicial review in the
    APA. See Maryland Code, State Government Article, §§ 10-203(a)(3)(v), 10-
    222(h).
    However, PU § 3-203 also appears to be a more deferential standard
    in some respects compared to the standard of review under the APA. In
    particular, with respect to decisions of the Commission, the General
    Assembly has directed that the Commission’s decision is “prima facie
    correct” and is to be affirmed unless the listed defects are “clearly shown.”
    That language is absent from the APA’s provision concerning judicial
    review. The distinction does not appear to be unintended. The statute
    establishing the Commission preceded the APA and the APA provision
    concerning judicial review was enacted just two years after enactment of the
    current version of the judicial review provision in the Commission’s statute.
    See Mid-Atlantic Power Supply Ass’n v. Public Service Commission, 
    361 Md. 196
    , 214, 
    760 A.2d 1087
     (2000). (“Had the Legislature intended that the
    standard for judicial review of . . . Commission proceedings be the same as .
    51
    . . under the APA, it is inconceivable that it would have excluded the . . .
    Commission from the APA”).
    In giving meaning to this language in PU § 3-203 without rendering
    it surplusage, we believe that it calls for a court to be particularly mindful of
    the deference owed to the Commission on those issues on which courts
    typically accord some degree of deference to administrative agencies – i.e.
    findings of fact, mixed questions of law and fact, and the construction of
    particular statutes administered, and regulations adopted, by the agency. On
    those questions on which a court does not typically defer to an agency –
    general questions of law, jurisdiction and constitutionality – PU § 3-203
    requires no greater deference to the Commission than any other agency. Such
    legal questions “are completely subject to review by courts.” In sum, with
    respect to the Commission, “this Court has tended to accord particular
    deference (though not total deference) to PSC decisions.” Accokeek,
    Mattawoman, Piscataway Creeks Community Council, Inc. [v. Pub. Serv.
    Comm’n], 451 Md. [1,] 12, 
    150 A.3d 856
     [(2016)]; see also Baltimore Gas
    & Elec. Co., 305 Md. at 170, 
    501 A.2d 1307
     (recognizing that this Court has
    “consistently held that Commission orders enjoy a high degree of judicial
    deference on review”) (citations omitted).
    Maryland Office of People’s Counsel, 461 Md. at 392–94 (footnotes omitted).
    With that standard of review in mind, we address the Commission’s order in this
    case. ESC makes several arguments in support of its contention that the Order should be
    reversed, but the argument, at its core, is that the Administrative Adjustment adopted by
    the Commission resulted in BGE providing SOS to residential and small commercial
    customers at a price that was below the “market price” required by PU § 7-510(c)(3)(ii)(2).
    As indicated, the “market price” for SOS is composed of the “verifiable, prudently incurred
    costs to procure or produce the electricity plus a reasonable return.”
    The Commission’s Order in this case, however, must be considered in the context
    with all the work that previously has been done to establish a market price for SOS. As
    indicated, the 2003 Settlement Order, involving BGE and other electric companies,
    52
    established that the market price for SOS would consist of purchase power costs,
    transmission costs, taxes, and an administrative charge. The Administrative Charge
    component was further broken down to include “a utility return component, incremental,
    or direct, costs to provide SOS, uncollectibles, and an Administrative Adjustment, which
    was set initially at 0.9 mills per kWh.” The Administrative Adjustment subsequently was
    changed to 0.0 mills per kWh, with the appropriate amount to be considered in “BGE’s
    next general rate case, in which a cost of service study should be presented to reflect more
    precisely which costs should be properly allocated in distribution rates and which costs
    should be properly allocated to SOS prices.” Thus, the formula to determine what would
    constitute a market rate was established years ago. What was left to be determined was the
    appropriate rate for the Administrative Adjustment component, which served as a proxy
    for administrative costs that retail suppliers must include in their rates, but are embedded
    in BGE’s distribution rates.
    When BGE requested a rate increase in 2019, it included, as instructed, a cost of
    service study that assessed indirect costs incurred to provide SOS, which would “reflect
    more precisely which costs should be properly allocated in distribution rates and which
    costs should be properly allocated to SOS prices.” The Commission’s decision in this case
    was to determine whether the cost of service study conducted by BGE adequately assessed
    the costs that should be included in the Administrative Adjustment component, i.e. non-
    incremental, or indirect, costs that supported SOS that were not otherwise included in the
    Administrative Charge.
    53
    In addressing ESC’s contention that the Commission erred in determining that the
    appropriate Administrative Adjustment was 1.09 mills per kWh, we start with the
    proposition that the Commission’s decision is prima facie correct unless ESC “clearly
    show[s]” one of the six enumerated statutory defects. PU § 3-203. There is no question
    that the decision regarding BGE’s request for a rate increase was within the statutory
    authority and jurisdiction of the Commission. PU §7-505(b)(8) specifically gives the
    Commission the authority to “determine the terms, conditions, and rates” of SOS in
    accordance with other provisions, including the provision in PU § 7-510(c)(3)(ii)(2) that
    requires BGE to provide SOS at a market price. In furtherance of that statutory mandate,
    the Commission adopted the Administrative Adjustment as a component of the market
    price of SOS to keep “SOS prices competitive with retail energy suppliers’ costs and
    prices.” 2016 Order, at 14.
    ESC’s argument appears to encompass the statutory defects set forth in PU § 3-
    203(5), the Order was “affected by . . . error of law,” and PU § 3-203(4), the Order was
    “arbitrary or capricious.” ESC contends that the Commission erred as a matter of law
    because it ignored the statute requiring that a market price be established for SOS. As
    indicated, however, the formula to establish a market price had already been established,
    and the proceedings at issue here were to address the facts presented to determine what
    costs should be included in the Administrative Adjustment component for SOS. This
    determination was not, as ESC asserts, a question of law.
    Rather, as BGE and the Commission note, the implementation of, and rate-setting
    related to SOS is subject to the Commission’s broad discretion, and its decision in that
    54
    regard should be given deference.          In determining the appropriate rate for the
    Administrative Adjustment in this case, the Commission considered the cost of service
    study BGE conducted, as well as BGE’s recommendation of an SOS Administrative
    Adjustment rate of 1.0 mill per kWh. Mr. Manuel explained the basis for his reasoning,
    and multiple other witnesses expressed their opinions on this study and other methods to
    calculate the Administrative Adjustment.
    The Commission, the expert rate-setting agency, listened to the testimony, judged
    the credibility of the witnesses, and weighed the evidence in determining that the
    appropriate Administrative Adjustment was 1.09 mills per kWh. This determination was
    a discretionary decision made based on the facts presented, and it is a decision on which
    this Court gives deference.
    Thus, our review in this case is limited to whether the Commission’s decision setting
    the SOS Administrative Adjustment at 1.09 was arbitrary and capricious. To prevail in
    that regard, ESC must show that the Commission “exercised its discretion unreasonably or
    without a rational basis.” Maryland Office of People’s Counsel, 461 Md. at 399. We
    conclude, with exceptions explained below, that the Commission’s decision was not
    arbitrary or capricious, but rather, it was supported by substantial evidence.
    Mr. Manuel provided extensive testimony regarding how he conducted the cost of
    service study and how he arrived at his determination that the appropriate Administrative
    Adjustment was 1.0 mill per kWh, an increase in the rate for that component. He noted
    that incremental, or direct, costs related to SOS were already allocated to SOS and included
    in the SOS Administrative Charge. His study identified the types of costs and cost centers
    55
    that support SOS. After identifying those costs, he determined an approach that he thought
    was reasonable for allocating a portion of those non-incremental costs to SOS. His study
    resulted in a charge of 0.99 mills per kWh, but he recommended a 1.00 mill per kWh
    Administrative Adjustment because he recognized that his study was “not surgically
    precise,” but it could be used “to set the Administrative Adjustment at a reasonable level
    for years to come.” Mr. Manuel testified that he used traditional cost-causation principles
    in his study.
    Commission Staff testified that BGE’s analysis was reasonable, although Mr.
    Hoppock suggested a few additional costs that should be allocated to SOS. His proposal,
    after some modifications, was to increase the costs allocated for the SOS Administrative
    Adjustment rate, from BGE’s proposal of $12.3 million to $15.9 million.
    The Commission determined that the appropriate cost allocation for the
    Administrative Adjustment was a “hybrid approach,” which accepted BGE’s cost of
    service study, with some additions proposed by Commission Staff.           Accordingly, it
    allocated costs of $13,569,649 to SOS, which resulted in an Administrative Adjustment
    rate of 1.09 mills per kWh.
    ESC essentially argues that the Commission was required to accept its
    recommendation, stating that, “[r]equiring BGE to perform a fully distributed cost
    allocation study is the only way for the Commission to have ensured compliance with the
    market price standard in the state.” (Emphasis added). Numerous witnesses, however,
    disagreed with this analysis. They explained why, in their opinion, the recommended
    analysis by ESC’s witnesses, which allocated $173.1 million in non-incremental costs to
    56
    SOS, was inappropriate, “nonsensical,” and “excessive on its face.” Mr. Johnson testified
    that ESC’s analysis was “not consistent with standard practices for electric utility cost of
    service studies and inappropriately assigns distribution cost categories to SOS without any
    clear connection between the costs and SOS service.” The Commission credited that
    testimony and gave as an example the unreasonably large percentage of costs allocated to
    SOS for administrative and general overhead and depreciation, even though the SOS
    business was not “labor intensive” or “capital intensive.”21
    It was within the Commission’s discretion to reject the analysis set forth by ESC,
    determine that a fully distributed cost allocation study was not required, and conclude that
    BGE’s study, which reflected “more precisely” additional costs that should be allocated to
    SOS, was reasonable and appropriate. The Commission’s decision, adopting BGE’s cost
    of service study, with the addition of some costs suggested by Commission Staff was, for
    the most part, neither arbitrary nor capricious.
    There are however, two portions of the 2019 Order that requires clarification and/or
    correction. First, the Commission stated on page 38 of the Order that Commission Staff
    “did not adequately support its allocation of costs from” FERC Accounts 909 and 930.2,
    and because the expenses in those accounts did not relate to SOS, those costs should be
    excluded. Several sentences later, however, it stated that it was accepting Commission
    21
    As indicated, Mr. Manuel testified that, of the 300 employees employed by BGE,
    it utilized only two full-time employees exclusively for SOS, along with a handful of
    employees on a partial basis, which resulted in a total of $70,000 of incremental costs for
    SOS due to labor and fringe benefits. Nevertheless, ESC allocated $60 million to SOS for
    non-incremental costs of administrative and general overhead.
    57
    Staff’s inclusion of FERC Accounts 909 ($468,811) and 930.2 ($260,175), and these costs
    were included in the total costs of $13,569,649 adopted by the Commission. If the
    Commission intended to exclude those costs, they should not be included in the total costs
    allocated to SOS, and the Administrative Adjustment would need to be recalculated.
    Second, the Commission calculated the total costs to be $13,569,649.                Our
    calculation of the total costs, using the figures listed, is $13,567,649.22
    Accordingly, although we conclude, in general, that the Commission’s decision was
    supported by substantial evidence and was not arbitrary and capricious, we shall vacate the
    Commission’s decision and remand for the Commission to clarify whether FERC Accounts
    909 and 930.2 should be included in the total costs, recalculate the total costs to be allocated
    to SOS, and recalculate the Administrative Adjustment consistent with those calculations.
    JUDGMENT     VACATED    AND    CASE
    REMANDED FOR FURTHER PROCEEDINGS
    CONSISTENT WITH THIS OPINION. COSTS
    TO BE DIVIDED EQUALLY BETWEEN THE
    PARTIES.
    22
    We note that the figures listed by the Commission included costs for Accounting
    in the amount of $14,460, but the parties had allocated $16,460 in costs for Accounting.
    That may explain the $2,000 difference, but the Commission can advise on remand.
    58