Virginia Elec. & Power Co. v. State Corp. Comm'n ( 2012 )


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  • Present: Kinser, C.J., Lemons, Millette, McClanahan, and
    Powell, JJ., and Lacy and Koontz, S.JJ.
    VIRGINIA ELECTRIC AND POWER COMPANY
    OPINION BY
    v.   Record Nos. 120519       SENIOR JUSTICE LAWRENCE L. KOONTZ, JR.
    & 120520                   November 1, 2012
    STATE CORPORATION COMMISSION, ET AL.
    FROM THE STATE CORPORATION COMMISSION
    These consolidated appeals arise from a final
    determination of the State Corporation Commission
    ("Commission") in a mandated biennial review of "the rates,
    terms and conditions for the provision of generation,
    distribution and transmission services [of an] investor-owned
    incumbent electric utility" pursuant to the provisions of the
    Virginia Electric Utility Regulation Act.       Code §§ 56-576 et
    seq.       As amended by the General Assembly in 2007, the Act
    significantly altered the procedures and authority of the
    Commission with respect to electric utility ratemaking. 1
    As pertinent here, commencing in 2011, the Act requires
    the Commission to conduct biennial reviews of an electric
    utility's performance during the two successive 12-month
    periods immediately prior to such reviews.       Code § 56-
    1
    For a more detailed discussion of the legislative
    history of the regulatory scheme now incorporated in the Act
    and the intended goals of the Act see Appalachian Power Co. v.
    State Corporation Commission, 
    284 Va.
    ___, ___, ___ S.E.2d
    ___, ___ (2012) (this day decided).
    585.1(A).   In doing so, the Commission is required to
    determine, among other things, "fair rates of return on common
    equity" ("ROE") and "the rates that the utility may charge
    until such rates are adjusted."       Id.
    These appeals present the first opportunity for this
    Court to consider the Commission's application of Code § 56-
    585.1 in a biennial review.   The principal focus of these
    appeals is whether in the 2011 biennial review of the
    performance of Virginia Electric and Power Company ("VEPCO")
    in the 2009-2010 test period, the Commission erred in
    determining that the utility's authorized ROE of 10.9% would
    apply to the entire 2011-2012 test period in the next biennial
    review in 2013.
    BACKGROUND
    VEPCO is an investor-owned electric utility providing
    generation, distribution, and transmission services within
    Virginia.   As such, the rates it charges for these services
    are subject to regulation under the Act.
    In accord with the requirements of Code § 56-585.1(A), on
    March 31, 2009 VEPCO filed an application for the Commission
    to review VEPCO's prevailing rates, terms and conditions for
    generation, distribution, and transmission services and to
    determine VEPCO's authorized base rate.     This rate case,
    frequently referred to as a "going-in" review, served as a
    2
    transition to the new biennial review process commencing in
    2011.    After completing its initial case, in an order entered
    March 11, 2010, the Commission adopted an agreed stipulation,
    made among VEPCO, the Office of the Attorney General Division
    of Consumer Counsel, and various other interested parties,
    that VEPCO's rates in the 2009-2010 biennial period would
    reflect an ROE of 11.9% "unless and until reset in the
    biennial review process" in 2011.      Application of Virginia
    Electric and Power Co., Case No. PUE-2009-00081 (March 11,
    2010).    In an addendum to the agreed stipulation, the parties
    clarified that VEPCO's ROE "shall be utilized for purposes of
    the Earnings Test prescribed for the Company's first biennial
    review."     Id.   Accordingly, although the order was entered in
    2010, under the agreed stipulation and addendum the 11.9% ROE
    would serve as the fair rate of return for the entire 2009-
    2010 period to be reviewed in 2011.
    Thereafter, on March 31, 2011, VEPCO filed an application
    with the Commission for the first biennial review as required
    by Code § 56-585.1(A)(3).     In its application, VEPCO requested
    that the Commission approve a new ROE of 12.5% "to be applied
    . . . prospectively upon the effective date of the final order
    in this proceeding."      Application of Virginia Electric and
    Power Co., Case No. PUE-2011-00027 (March 31, 2011).
    3
    The biennial review process prescribed by Code § 56-585.1
    includes many different elements, including a determination of
    whether the ROE from the prior biennial period permitted the
    utility to fully recover the costs of providing the utility's
    services and to earn a fair rate of return and, if not, to
    determine what recoupment or rebate would be applied to rates
    going forward.   The Commission also must set the ROE for the
    current biennial period, as well as determine whether the
    individual rates allowed for the utility's generation,
    distribution, and transmission of electric power should be
    altered.   Accordingly, the ratemaking process is necessarily
    fact driven, lengthy, and complex, generating a voluminous
    record.
    In these appeals, VEPCO has not challenged any of the
    factual determinations of the Commission with regard to the
    rates applied in the 2009-2010 biennium and which continued to
    be charged while the review process was ongoing, or with
    regard to the rates to be charged going forward in the 2011-
    2012 biennium and the ROE which will be used to evaluate
    VEPCO's performance for the 2011-2012 biennium in the 2013
    biennial review.   Rather, VEPCO has challenged only the
    Commission's determination, as detailed below, that the ROE
    set for the 2011-2012 biennial review would serve as the fair
    rate of return for the entire 2011-2012 biennium rather than
    4
    for only the period following the date of the final order in
    the 2011 review.   Accordingly, we need only briefly summarize
    the relevant rulings made by the Commission that relate to
    this issue.
    On November 30, 2011, the Commission entered a final
    order on VEPCO's application, noting that it was "a first-of-
    its-kind" proceeding.   Application of Virginia Electric and
    Power Co., Case No. PUE-2011-00027 (Nov. 30, 2007).    After
    reviewing the evidence and assertions of VEPCO, the Office of
    the Attorney General Division of Consumer Affairs, other
    interested parties, and the report and recommendations of its
    staff, the Commission set a 10.9% ROE for the biennial period.
    The order further stated that "[t]he 10.9% ROE determined in
    this proceeding . . . will serve as the fair combined rate of
    return against which [VEPCO]'s earned return will be compared
    in its next biennial review proceeding" in 2013.
    VEPCO filed a timely petition for reconsideration of the
    November 30, 2011 final order.   5 VAC § 5-20-220.   VEPCO
    maintained in the petition that the Commission had "adopted"
    the view expressed by VEPCO in the proceeding that the ROE
    determined in the proceeding would apply prospectively only,
    but wanted "confirmation" of this point.   The Commission
    granted VEPCO's petition in an order dated December 16, 2011,
    5
    stating that "[r]econsideration is granted for the purpose of
    continuing the Commission's jurisdiction over these matters."
    After setting a briefing schedule, the Commission
    received briefs from its staff counsel, the Office of the
    Attorney General Division of Consumer Counsel, and other
    interested parties.   VEPCO filed a response that, for all
    intents and purposes, mirrors the positions it has taken in
    these appeals.   These arguments will be detailed in the
    discussion below.
    The Commission entered an order and opinion addressing
    VEPCO's petition for reconsideration on March 29, 2012.      The
    Commission first opined that Code § 56-585.1(A) "is not
    prescriptive but, rather, is discretionary as to when the ROE
    - as determined by the Commission - becomes applicable for any
    particular two-year biennial review period."      The Commission
    noted that the General Assembly had made express provision for
    many aspects of determining ROE which limited the Commission's
    discretion, but had not made any express provision for melding
    two different ROEs in the same biennial period, as VEPCO had
    requested the Commission to do.       The Commission further noted
    that the stipulation from 2010, which set the ROE to be used
    for review of VEPCO's 2009-2010 earnings, had been advocated
    by VEPCO as an appropriate exercise of the Commission's
    authority.
    6
    The Commission rejected the position maintained by VEPCO
    that "unless and until reset in the biennial review process"
    language of the stipulation was intended to carry the 2009-
    2010 ROE forward into 2011.    To the contrary, the Commission
    was of opinion that the language did no more than recognize
    that the Commission would reset the ROE for the new biennial
    period.
    Finally, the Commission noted that the ROE for a given
    biennial period does not "result in a rate change and is not
    the same as setting rates."    This is so, because the ROE for a
    biennial period does not alter the rates to be charged during
    that period but, rather, is only used to adjust the rates, if
    necessary, in the next biennial review to allow the utility to
    recoup a shortfall in revenue or rebate any excess revenue to
    customers as determined by applying the ROE for that biennium.
    Thus, the Commission concluded that utilizing the ROE set in
    2011 for the entire 2011-2012 biennium was consistent with its
    function within the ratemaking process because "[f]or purposes
    of the biennial review, the relevant ROE interrogative is not
    'when,' but 'what.'   The proper question is not 'when' did the
    Commission make such finding but, rather, 'what' is the ROE"
    for the new biennial period.
    The Commission concluded that Code § 56-585.1 "does not
    mandate the specific time period of any ROE application in any
    7
    biennial review," and thus, the General Assembly intended for
    this determination to be committed to the Commission's sound
    discretion.   Accordingly, the Commission ruled that in the
    2013 biennial review the 10.9% ROE would serve as the fair
    rate of return for the entire 2011-2012 biennium.   These
    appeals followed.
    DISCUSSION
    VEPCO noted appeals from both the Commission's November
    30, 2011 order and its March 29, 2012 order, but assigned
    identical errors in each appeal:
    1. The State Corporation Commission ("Commission")
    erred in its November 30, 2011 Final Order in Case
    No. PUE-2011-00027 ("Final Order"), as clarified in
    its March 29, 2012 Order on Reconsideration and
    Opinion ("Order on Reconsideration"), when, in
    determining the Company's authorized fair rate of
    return on common equity ("ROE") pursuant to the
    biennial review process mandated by Va. Code § 56-
    585.1, it held that it will apply the 10.9% ROE
    authorized in the Final Order retroactively to
    January 1, 2011, rather than prospectively from the
    date of the Final Order, contrary to Va. Code § 56-
    585.1.
    2. The Commission erred in its Final Order, as
    clarified in its Order on Reconsideration, when it
    held that the determination of the effective date of
    the Company's authorized ROE pursuant to Va. Code
    § 56-585.1 falls within the discretion of the
    Commission, and thus erroneously held that it may
    apply the 10.9% ROE authorized in the Final Order
    retroactively to January 1, 2011, rather than
    prospectively from the date of the Final Order.
    3. The Commission erred in its Final Order, as
    clarified in its Order on Reconsideration, when, in
    determining the Company's authorized ROE pursuant to
    8
    the biennial review process mandated by Va. Code
    § 56-585.1, it held that it will apply the 10.9% ROE
    authorized in the Final Order retroactively to
    January 1, 2011, rather than prospectively from the
    date of the Final Order, implicating an unlawful
    retroactive change in rates of service authorized by
    the Commission to be charged by the Company in
    contravention of Virginia common law and the
    Constitutions of the Commonwealth of Virginia and
    the United States.
    4. The Commission erred in its Final Order, as
    clarified in its Order on Reconsideration, when, in
    determining the Company's authorized ROE pursuant to
    the biennial review process mandated by Va. Code
    § 56-585.1, it held that its retroactive application
    of the 10.9% ROE authorized in the Final Order is
    consistent with its March 11, 2010 Order Approving
    Stipulation and Addendum in Case No. PUE-2009-00019,
    and that the parties to the Stipulation and
    Addendum, including the Company, agreed that the
    Company's 11.9% ROE authorized thereunder would not
    apply to earnings for the period January 1, 2011
    through the effective date of the Commission's Final
    Order in the 2011 biennial review.
    VEPCO and the appellees 2 agree as to the standard of
    review we are to apply, each having cited Appalachian Voices
    v. State Corporation Commission, 
    277 Va. 509
    , 515-16, 
    675 S.E.2d 458
    , 460-61 (2009), in which we quoted the following
    passage from Northern Virginia Electric Cooperative v.
    2
    In addition to the Commission, represented by its staff
    counsel, the Office of the Attorney General Division of
    Consumer Counsel, the Virginia Committee for Fair Utility
    Rates, and the Fairfax County Board of Supervisors have
    appeared in these appeals as appellees in support of the
    Commission's ruling. With respect to the dispositive issues
    of these appeals, the appellees are mostly in accord in their
    positions supporting the Commission's decision. Accordingly,
    we will summarize their arguments jointly.
    9
    Virginia Electric & Power Co., 
    265 Va. 363
    , 368, 
    576 S.E.2d 741
    , 743-44 (2003):
    It is firmly established that a decision by the
    Commission
    comes to this court with a presumption of
    correctness. The Constitution of Virginia and
    statutes enacted by the General Assembly
    thereunder give the Commission broad, general
    and extensive powers in the control and
    regulation of a public service corporation.
    The Commission is charged with the
    responsibility of finding the facts and making
    a judgment. This court is neither at liberty
    to substitute its judgment in matters within
    the province of the Commission nor to overrule
    the Commission's finding of fact unless we can
    say its determination is contrary to the
    evidence or without evidence to support it.
    Campbell County v. Appalachian Pow. Co., 
    216 Va. 93
    ,
    105, 
    215 S.E.2d 918
    , 927 (1975). Additionally, the
    Commission's decision "is entitled to the respect
    due judgments of a tribunal informed by experience,"
    and we will not disturb the Commission's analysis
    when it is " 'based upon the application of correct
    principles of law.' " Lawyers Title Insurance Corp.
    v. Norwest Corp., 
    254 Va. 388
    , 390-91, 
    493 S.E.2d 114
    , 115 (1997) (quoting Swiss Re Life Co. Am. v.
    Gross, 
    253 Va. 139
    , 144, 
    479 S.E.2d 857
    , 860
    (1997)). However, the Commission's decision, if
    based upon a mistake of law, will be reversed.
    First Virginia Bank v. Commonwealth, 
    213 Va. 349
    ,
    351, 
    193 S.E.2d 4
    , 5 (1972).
    At the outset of our discussion, it is important to make
    clear, as did the Commission, the distinction between the
    "rates" which are allowed to be charged by an electric utility
    as determined by the Commission for a biennial period, and the
    "ROE" set in the same biennial review process.   As the
    10
    Commission explained in its March 29, 2012 order, the setting
    of the ROE does not "result in a rate change and is not the
    same as setting rates" for the biennial period in which the
    review is conducted.   Rather, the ROE is used as a benchmark
    in the next biennial review for determining whether the
    utility has received a fair rate of return during the
    preceding biennium, neither reaping a windfall if market
    conditions, such as cost of fuel, consumer demand, and other
    variables, are more favorable than anticipated, nor suffering
    an undue loss if these variables are less favorable than the
    projections used to set the rates in the preceding biennial
    review. 3
    During VEPCO's 2011 biennial review the determination
    whether VEPCO's revenues from 2009 through 2010 had allowed it
    an appropriate rate of return was controlled by the 11.9% ROE
    established in the Commission's March 11, 2010 order.   The
    10.9% ROE established in the 2011 review process will be used
    in the 2013 biennial review to determine what adjustment may
    be necessary for VEPCO's revenue from 2011 through 2012.   In
    this sense, an ROE is "prospective" at the time it is
    established in one biennial review, and it is not utilized by
    3
    The ROE is used by the Commission in setting rates when
    circumstances require rate adjustments under Code § 56-
    585.1(A)(8). This aspect of that statutory provision is not
    at issue in these appeals.
    11
    the Commission until the Commission conducts its retrospective
    review of prior earnings in the next biennial review.    VEPCO
    does not challenge the Commission's 10.9% ROE determination.
    Where the parties differ is whether the Commission has the
    discretion to apply that ROE to revenue that was earned before
    that ROE was established by the Commission's order of November
    30, 2011.   Thus, the crux of these appeals is whether during
    the 2013 biennial review VEPCO's revenues will be subject to
    an 11.9% ROE for the first 11 months of 2011, and a 10.9% ROE
    thereafter, as it maintains, or whether the Commission
    correctly determined that it has the discretion to apply the
    10.9% ROE to the entire 2011-2012 biennium.
    VEPCO first contends that the Commission erred in holding
    that it would apply the 10.9% ROE "retroactively" to January
    1, 2011 in the 2013 biennial review because, in VEPCO's view,
    the plain language of Code § 56-585.1 mandates prospective
    application of a newly determined ROE.   To support this
    assertion, VEPCO relies on four selected statements gleaned
    from the statute.
    First, VEPCO notes that with regard to the initial
    "going-in" review, Code § 56-585.1(A) provides that "the
    Commission shall determine the rates that the utility may
    charge until such rates are adjusted."   (Emphasis added.)
    VEPCO contends that this language shows that the legislature
    12
    intended for the rates set initially to continue, and be
    subject to the ROE set for that period, until the rates were
    adjusted in the first biennial review.   In this regard, VEPCO
    maintains that because it was required to charge the base
    rates set by the "going-in" review and authorized to collect
    the revenues generated thereby into the next biennium while
    the 2011 review was taking place, it should be allowed "to
    retain those revenues based on the 11.9% rate of return,"
    subject to any adjustment in the next, that is the 2013,
    biennial review.
    VEPCO further notes that a similar provision is found in
    Code § 56-585.1(A)(8), which provides that in subsequent
    biennial reviews after the "going-in" review, "any revisions
    in rates or credits . . . shall take effect not more than 60
    days after the date of the order."   (Emphasis added.)   VEPCO
    contends that this language shows that the legislature
    intended for the effect of all actions taken by the Commission
    in a biennial review to be prospective only, limiting its
    discretion to when during the 60 day period the Commission's
    order will take effect.
    The appellees respond that when Code § 56-585.1 is read
    as a whole, it is clear that the General Assembly understood
    the distinction between "rates," any change in which must be
    approved by the Commission, and the ROE, which is a benchmark
    13
    used to determine at a future date whether the approved rates
    have provided the utility with a fair rate of return on
    equity.   Thus, they contend that VEPCO's reliance on these two
    provisions within the statute is misplaced, as they clearly
    speak to when a change may be affected in "rates," and have no
    application to the ROE that is to be applied to revenue
    derived from those rates at a future date.   We agree.
    When construing a statute, our " 'primary objective . . .
    is to ascertain and give effect to legislative intent.' "
    Conger v. Barrett, 
    280 Va. 627
    , 630, 
    702 S.E.2d 117
    , 118
    (2010) (quoting Turner v. Commonwealth, 
    226 Va. 456
    , 459, 
    309 S.E.2d 337
    , 338 (1983)).   "When the language of a statute is
    unambiguous, we are bound by the plain meaning of that
    language."   Conyers v. Martial Arts World of Richmond, Inc.,
    
    273 Va. 96
    , 104, 
    639 S.E.2d 174
    , 178 (2007).   And if the
    language of the statute "is subject to more than one
    interpretation, we must apply the interpretation that will
    carry out the legislative intent behind the statute."     Id.
    Moreover, in evaluating a statute in this way, we have said
    that "consideration of the entire statute . . . to place its
    terms in context to ascertain their plain meaning does not
    offend the rule because 'it is our duty to interpret the
    several parts of a statute as a consistent and harmonious
    whole so as to effectuate the legislative goal.'"   Eberhardt
    14
    v. Fairfax Cnty. Emps. Ret. Sys. Bd. of Trs., 
    283 Va. 190
    ,
    194-95, 
    721 S.E.2d 524
    , 526 (2012) (quoting VEPCO v. Board of
    Cnty. Supervisors, 
    226 Va. 382
    , 387-88, 
    309 S.E.2d 308
    , 311
    (1983)).   Thus, "[a] statute is not to be construed by
    singling out a particular phrase."   VEPCO, 226 Va. at 388, 309
    S.E.2d at 311.
    Code § 56-585.1 is a comprehensive statute detailing a
    complex and cohesive regulatory scheme.    The two phrases that
    VEPCO has singled out plainly do not support the proposition
    being advanced because, as the appellees observe, these
    provisions apply to rates not rate of return, which under the
    statute are distinct, separate concepts.
    VEPCO, however, points to two additional provisions in
    Code § 56-585.1 to support its contention that all decisions
    made by the Commission in a biennial review are to be
    prospectively applied.   First, VEPCO notes that in subsection
    (A)(2), the statute provides that an ROE "shall be determined
    by the Commission during each such biennial review."    VEPCO
    reasons that it would be harmonious to interpret this
    provision as meaning that an ROE should be applied
    prospectively in the same way as the rates, as both are
    determined in the biennial review.
    VEPCO asserts that there is further support for this view
    in subsection (A)(2)(c), which provides that if the Commission
    15
    adopts a "Performance Incentive" increasing a utility's base
    ROE, the incentive "shall remain in effect without change
    until the next biennial review for such utility is concluded."
    VEPCO contends that this language plainly evinces a
    legislative intent that both the incentive and the ROE to
    which it is added can only be changed prospectively. 4
    According to VEPCO, these provisions demonstrate that
    "[i]f the General Assembly had intended the [ROE] to apply
    retroactively . . . then the 2007 Act would have said so.      In
    fact, it explicitly provides to the contrary."
    The appellees respond that VEPCO's assertion in this
    regard is contrary to the overall scheme of the statute.      They
    contend, as did the Commission in its March 29, 2012 opinion,
    that when read as a whole it is clear that where the General
    Assembly wished to limit the discretion of the Commission, it
    did so expressly.   See, e.g., Code §§ 56-585.1(A)(2)(a)
    (requiring a set floor and ceiling for the ROE); -585.1(A)(10)
    (prescribing what capital structure and cost to use in
    measuring return on equity); -585.1(A)(6) (prescribing
    additional ROE for different generation technology).     By
    contrast, the legislature did not dictate that a new ROE would
    4
    Whether a performance incentive can only be changed
    prospectively is not before us in these appeals. Accordingly,
    we express no opinion on that issue.
    16
    serve as the fair rate of return for the entire biennium
    because the ROE would not be utilized until the next biennial
    review in any case.    Thus, the absence of such language, far
    from indicating an intent that the ROE not be applicable to
    the entire biennium, must be interpreted as a recognition that
    the General Assembly did not wish to alter the manner in which
    an ROE would be utilized, leaving it to the Commission to make
    such adjustments in its discretion if it deemed proper and
    necessary.
    We agree with the Commission's observation in its March
    29, 2012 opinion that the directive that the ROE for a
    biennium "shall be determined by the Commission during each
    such biennial review" means exactly what it says and nothing
    more.    That is, this language directs that a new ROE is to be
    determined by the Commission during the biennial review based
    on the most recently available criteria, but it says nothing
    about limiting the application of an ROE to less than the full
    biennium in the subsequent review.    It plainly does not
    mandate that an ROE must be applied to less than the full
    biennium.
    In short, the better reading of VEPCO's four selections
    from Code § 56-585.1 is to place them in context within the
    entire statute.    In doing so, it is entirely consistent with
    the overall legislative intent expressed therein that the
    17
    General Assembly would expressly dictate that the "rates"
    which already have been assessed while a biennial review was
    pending could only be modified prospectively, but would make
    no such provision for an ROE, which is used as a benchmark to
    evaluate performance after the biennium which is under review
    has ended.   Accordingly, we hold that the Commission did not
    err in concluding that Code § 56-585.1 does not mandate
    prospective application of an ROE from the date it is set by
    the Commission's final order at the conclusion of a biennial
    review.
    VEPCO next contends that even if Code § 56-585.1 does not
    expressly mandate that the Commission must apply the ROE
    determined in a biennial review prospectively from the date of
    its final order, the Commission nonetheless erred in
    concluding that it had the discretion to utilize the ROE for
    the entire 2011-2012 biennium because of statutory,
    procedural, and due process constraints as well as policy
    considerations. 5   We will address each aspect of VEPCO's
    contentions in turn.
    Initially, VEPCO maintains that the same statutory
    provisions that it relied upon in asserting that prospective
    application of an ROE is mandatory also in this case limit the
    5
    On brief, VEPCO combined the issues of its second and
    third assignments of error in this argument.
    18
    Commission's discretion to apply the 10.9% ROE to the entire
    2011-2012 biennium.   VEPCO notes that the Commission itself
    recognized that many of the provisions of Code § 56-585.1
    place express limits on the Commission's discretion as to the
    determination of an ROE.   VEPCO contends that if the
    Commission were also not limited in its discretion as to when
    an ROE would be applied, this would "swallow up or 'end-run'
    many of the stated limitations on its authority."
    The appellees respond that the General Assembly expressly
    set specific limitations on the Commission's authority to
    determine the ROE, but was silent as to when the ROE should be
    applied.   They contend that because the nature of the biennial
    review process makes it self-evident that the ROE would not be
    determined until sometime during the first year of the
    biennium to which it would apply, the legislature must have
    been aware that the Commission would have been required to
    determine when the ROE was to be applied.   Having given no
    express direction on this matter, they assert that the
    legislative intent was to leave the matter to the Commission's
    sound discretion.   We agree.
    "The Commission is a specialized body with broad
    discretion in regulating public utilities."   Level 3 Commcn's
    of Virginia v. State Corp. Comm'n, 
    268 Va. 471
    , 474, 
    604 S.E.2d 71
    , 72 (2004); Central Tel. Co. of Va. v. State Corp.
    19
    Comm'n, 
    219 Va. 863
    , 874, 
    252 S.E.2d 575
    , 581 (1979).
    Moreover, when the Commission is conducting a ratemaking
    procedure, it is exercising a legislative function delegated
    to it by the General Assembly.    Potomac Edison Co. v. State
    Corp. Comm'n, 
    276 Va. 577
    , 587, 
    667 S.E.2d 772
    , 777 (2008).
    Thus, when a statute delegates such authority to the
    Commission, we presume that any limitation on the Commission's
    discretionary authority by the General Assembly will be
    clearly expressed in the language of the statute.    In the
    absence of an express limitation, we will not add language to
    the statute by inference.   See Jackson v. Fidelity & Deposit
    Co., 
    269 Va. 303
    , 313, 
    608 S.E.2d 901
    , 906 (2005) ("Courts
    cannot 'add language to the statute the General Assembly has
    not seen fit to include.' ") (quoting Holsapple v.
    Commonwealth, 
    266 Va. 593
    , 599, 
    587 S.E.2d 561
    , 564-65
    (2003)).   Rather, we presume that where the General Assembly
    has not placed an express limitation in a statutory grant of
    authority, it intended for the Commission, as an expert body,
    to exercise sound discretion.    Accordingly, we hold that there
    is no statutory prohibition of the Commission's exercising its
    discretion to determine when an ROE for a given biennium will
    be applied.
    VEPCO next contends that permitting the Commission to
    utilize the newly set ROE for the entire 2011-2012 biennium
    20
    violates Rule 1:1 because this would permit the Commission to
    modify its March 11, 2010 order "authorizing the 11.9% rate of
    return that was in effect during" the period of January 1,
    2011 to November 30, 2011.   However, the Commission made an
    express finding in the March 29, 2012 order that the
    stipulation adopted in the March 11, 2010 order "does not
    apply the 11.9% ROE determined therein to the second biennial
    review."   VEPCO has not assigned error to this finding by the
    Commission.   Therefore, under the facts as determined by the
    Commission, the 11.9% ROE never applied to the 2011-2012
    biennial period, and, accordingly, the November 30, 2011 order
    did not modify the March 11, 2010 order.
    VEPCO next contends that by applying the 10.9% ROE to the
    entire 2011-2012 biennium, the Commission has effectively
    instituted a retroactive rate change for the period of January
    1, 2011 to November 30, 2011 in violation of due process
    guarantees of the Virginia and federal constitutions.   This
    argument is premised on VEPCO's assertion that the March 11,
    2010 order "authorized the Company to charge rates designed to
    provide it with the opportunity to earn an 11.9% rate of
    return."   However, as the Commission expressly found that the
    11.9% rate did not apply after December 31, 2010, VEPCO's
    assertion must fail.
    21
    Moreover, as appellees note in responding to this issue,
    and as we have already explained in addressing VEPCO's first
    assignment of error, the term "rates" as used in this statute
    refers to the rates that a utility is authorized to charge.
    It does not refer to the ROE which is used to measure whether
    the rates allowed the utility a fair rate of return.   While
    VEPCO was required to continue charging the rates set in 2010
    until the 2011 biennial review was complete, it is simply not
    correct to say that those "rates [were] designed to provide it
    with the opportunity to earn an 11.9% rate of return" in the
    2011-2012 biennium.   The 11.9% ROE was "designed" in the
    "going-in" review process that was limited to the time period
    applicable to that review process.   Likewise, it was the 2011
    biennial review that would determine the appropriate ROE for
    the 2011-2012 biennium.   Accordingly, we hold that there has
    been no due process violation of VEPCO's rights under the
    facts of this case.
    VEPCO next contends that the General Assembly could not
    have intended for the Commission to have discretion to set an
    ROE during the period to which it will be applied because this
    would create "significant operational concerns and risks
    . . . . with respect to the ability of the Company to manage
    its business and comply with its financial reporting
    obligations, as well the ability for investors to evaluate
    22
    their investment options in the Company."    VEPCO contends that
    such uncertainty "would run directly contrary to the goals of
    promoting healthy and stable electric utility returns and
    investor perceptions that are an evident purpose of the 2007
    Act."
    Even if we assume that VEPCO's contentions accurately
    reflect public policy concerns that the Act is intended to
    facilitate, this Court is not the appropriate forum for
    addressing VEPCO's asserted deficiencies of the Act regarding
    those concerns.    The legislature is the "author of public
    policy."    Campbell v. Commonwealth, 
    246 Va. 174
    , 184 n.8, 
    431 S.E.2d 648
    , 654 n.8 (1993).    The courts "can only administer
    the law as it is written."     Coalter v. Bargamin, 
    99 Va. 65
    ,
    71, 
    37 S.E. 779
    , 781 (1901).    For the courts, then, the "best
    indications of public policy are to be found in the enactments
    of the Legislature."     City of Charlottesville v. DeHaan, 
    228 Va. 578
    , 583, 
    323 S.E.2d 131
    , 133 (1984) (quoting City of
    Danville v. Hatcher, 
    101 Va. 523
    , 532, 
    44 S.E. 723
    , 726
    (1903)).
    Having found that Code § 56-585.1 does not expressly
    limit the discretion of the Commission to set an ROE during
    the biennium to which it will apply, we must presume that the
    General Assembly found such discretion to be consistent with
    the policy objectives of the statute.    Accordingly, we will
    23
    not consider VEPCO's policy-based arguments, but presume that
    if they have merit they will find redress in the appropriate
    forum of the legislature.
    Finally, VEPCO contends that the Commission erred in
    relying on the stipulation agreed to by VEPCO and adopted by
    the Commission in the March 11, 2010 order as demonstrating
    that VEPCO had effectively agreed that utilization of the ROE
    determined during the "going-in" review was appropriate, and,
    thus, that utilization of the ROE determined in the 2011
    biennial review was permissible.      Appellees Fairfax County and
    the Virginia Committee for Fair Utility Rates respond that the
    Commission's prior action is merely consistent with and
    provides a rational basis for its action in the present case.
    Because we have already determined that the Commission
    has the discretion to utilize the 10.9% ROE for the entire
    2011-2012 biennium, any reliance that the Commission may have
    placed on VEPCO's prior stipulation to the retrospective
    application of the ROE from the "going-in" review, even if
    misplaced, would not impugn the Commission's action in this
    case.    Moreover, the March 29, 2012 order is clear that the
    Commission principally relied upon its interpretation of Code
    § 56-585.1 as the basis for finding that it could apply the
    10.9% ROE to the entire 2011-2012 biennium.     The references to
    the 2010 stipulation in the order relied upon by VEPCO to
    24
    support its argument principally set the background of the
    case, and to the extent they may be viewed as justification
    for the Commission's action, this would only serve as an
    alternative basis for a ruling that was, in any case, correct.
    CONCLUSION
    In summary, we find no merit to VEPCO's contentions that
    the Commission is not permitted to utilize the 10.9% ROE set
    in the November 30, 2011 order for the entire 2011-2012
    biennial period in the 2013 biennial review of the rates,
    terms, and conditions for the provision of generation,
    distribution, and transmission services by VEPCO.   The
    Commission's construction of Code § 56-585.1 was based upon
    the proper application of legal principles, and we hold that
    the Commission did not abuse the discretion afforded to it
    under that statute.   For these reasons, the judgment of the
    Commission will be affirmed.
    Affirmed.
    25