cities-of-corpus-christi-appellantsaep-texas-central-company-public ( 2005 )


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  •       TEXAS COURT OF APPEALS, THIRD DISTRICT, AT AUSTIN
    NO. 03-03-00428-CV
    Cities of Corpus Christi, et al.,1 Appellants//AEP Texas Central Company; Public Utility
    Commission of Texas; and Constellation New Energy, Inc., Cross-Appellants
    v.
    Public Utility Commission of Texas and AEP Texas Central Company, Appellees//Public
    Utility Commission of Texas; Cities of Corpus Christi, et al.;Office of Public
    Utility Counsel; and Constellation New Energy, Inc., Cross-Appellees
    FROM THE DISTRICT COURT OF TRAVIS COUNTY, 261ST JUDICIAL DISTRICT
    NO. GN104182, HONORABLE SUZANNE COVINGTON, JUDGE PRESIDING
    DISSENTING OPINION
    While I join the majority in affirming the Commission’s handling of the member
    account balances with Nuclear Electric Insurance Limited and the demand charge issues, I strongly
    disagree that prior to 2004 the Commission lacked the authority to require AEP Texas Central
    1
    The cities participating in this appeal are municipalities served by AEP Texas Central
    Company, the transmission and distribution utility formerly owned by Central Power and Light
    Company, and include Alice, Aransas Pass, Beeville, Camp Wood, Carrizo Springs, Charlotte,
    Corpus Christi, Cotulla, Dilley, Eagle Pass, Edinburg, Edna, Ganado, George West, Gregory,
    Harlingen, Ingleside, Karnes City, Kingsville, La Feria, Laredo, Leakey, Los Fresnos, Lyford, Lytle,
    Mathis, McAllen, Mercedes, Odem, Orange Grove, Pearsall, Pleasanton, Port Aransas, Port Isabel,
    Port Lavaca, Rancho Viejo, Raymondville, Refugio, Rio Hondo, Rockport, Roma, San Benito, San
    Juan, Sinton, Smiley, Taft, and Victoria. The City of Corpus Christi has served as the “lead” city
    in this litigation. We will refer to these municipalities collectively as “the Cities.”
    Company to refund the excess earnings it had retained to accelerate the recovery of stranded costs
    when changed market circumstances eliminated the prospect of any stranded costs. I would hold that
    the Commission’s action is entitled to deference because (1) it was a reasonable method of meeting
    its statutory obligations of encouraging “full and fair competition among all providers of electricity”
    and preventing the overrecovery of stranded costs, see Tex. Util. Code Ann. §§ 39.001(b)(1), .262(a)
    (West Supp. 2004-05); and (2) it did not conflict with any express provision, or the overall intent,
    of PURA Chapter 39. See City of Austin v. Southwestern Bell Tel. Co., 
    92 S.W.3d 434
    , 441-42 (Tex.
    2002) (we give weight to Commission’s interpretation of its own powers if it is reasonable and not
    inconsistent with statute); Southwestern Bell Telephone Co. v. Public Util. Comm’n, 
    863 S.W.2d 754
    , 758 (Tex. App.—Austin 1993, writ denied) (we defer to agency’s construction of statute that
    agency is charged with enforcing). Accordingly, I respectfully dissent.
    Because I would hold that the Commission had the authority to order the refunds, I
    must briefly address AEP’s complaints that (1) the Commission erred by not providing for interest
    on any excess mitigation revenues refunded now that may be awarded to AEP as stranded costs in
    the 2004 true-up proceeding, and (2) the district court erred in ordering AEP to pay excess mitigation
    refunds to consumers rather than to REPs, as the Commission had ordered. Since the reasons
    expressed in the Commission’s order represent a reasonable construction of the relevant provisions
    of PURA Chapter 39, I would affirm its determination that (1) AEP is not entitled to interest on any
    refunded revenues that may be awarded as stranded costs in 2004 and (2) that AEP should refund
    its excess mitigation to REPs, rather than directly to consumers.
    2
    DISCUSSION
    AEP challenges the Commission’s authority to order a refund of excessive stranded
    costs collected through mitigation tools provided by statute. We are by now familiar with the fact
    that, before deregulation, utilities invested in generation assets expecting to recover their reasonable
    and prudent costs through regulated rates. Recognizing that the costs of these assets might become
    uneconomical and thus unrecoverable in a competitive, deregulated electric power market, the
    legislature devised a three-phase program to enable formerly regulated utilities to recover their
    investments during the transition from regulation to deregulation. See Centerpoint Energy, Inc. v.
    Public Util. Comm’n, 
    143 S.W.3d 81
    , 82-83 (Tex. 2004); Reliant Energy, Inc. v. Public Util.
    Comm’n, 
    101 S.W.3d 129
    , 133-34 (Tex. App.—Austin 2003), rev’d in part sub nom Centerpoint
    
    Energy, 143 S.W.3d at 99
    . The phrase “stranded costs” represents that portion of the net book value
    of a utility’s generation assets, not yet recovered through depreciation, that has become
    unrecoverable in a deregulated environment. See Tex. Util. Code Ann. § 39.251(7) (West Supp.
    2004-05); Centerpoint 
    Energy, 143 S.W.3d at 82-83
    ; Reliant Energy, 
    101 S.W.3d 129
    at 133.2
    As the legislature was devising the three-phase stranded cost recovery scheme, it
    considered the April 1998 Report to the Texas Senate Interim Committee on Electric Utility
    Restructuring that (1) identified nine incumbent utilities as having probable stranded costs as of
    December 31, 2001, the last day of regulation; and (2) projected extremely high stranded costs for
    the nuclear power generation held by those utilities. This report was derived using the Excess Cost
    Over Market (ECOM) Model, a complex computer modeling program that takes into account a
    2
    A stranded cost is the positive excess of the net book value of generation assets over the
    market value of the assets. Tex. Util. Code Ann. § 39.251(7) (West Supp. 2004-05).
    3
    variety of factors that would impact the market value of generating assets. Based on the 1998
    Report, the legislature determined that stranded cost recovery should begin immediately to ensure
    a proper return to utilities and to avoid a massive recovery in one year that might have an injurious
    effect on the competitive market that the legislature was hoping to foster by deregulating the electric
    industry. 
    Centerpoint, 143 S.W.3d at 83
    ; 
    Reliant, 101 S.W.3d at 134
    ; In re TXU Elec. Co., 
    67 S.W.3d 130
    , 149 (Tex. 2001) (Brister, J., concurring). An important part of the deregulation scheme
    was to accelerate the recovery of stranded costs beginning in 1999 to avoid excessive recoveries
    when the competitive market began in 2002 or when the costs were to be finally reconciled in 2004.
    In Phase I, covering years 1998 through 2001, the legislature required the utilities
    identified in the 1998 Report to begin mitigating their stranded costs through measures designed to
    reduce the book value of their generation assets. 
    Reliant, 101 S.W.3d at 134
    . To do this, the utilities
    could (1) transfer depreciation from transmission and distribution assets to generation assets, (2)
    retain earnings generated under frozen rates, and (3) securitize a portion of their estimated stranded
    costs by selling transition bonds and using the proceeds to reduce the book value of their generation
    assets. See Tex. Util. Code Ann. §§ 39.256, .301-313; 
    Reliant, 101 S.W.3d at 134
    . These measures
    were referred to as mitigation tools, and it was intended that they would accelerate the recovery of
    the enormous stranded costs that were projected by the 1998 ECOM model to occur under
    competitive rates beginning in 2002. Stranded costs were to be calculated on the book value of
    generation assets as of the last day of regulation, December 31, 2001; the excess of this book value
    over market value would be treated as a stranded cost. 
    Centerpoint, 143 S.W.3d at 87
    .
    4
    Both the competitive market and Phase II of the stranded cost recovery scheme began
    on January 1, 2002. Although a utility’s stranded costs were to be determined as of the day before
    competition began, the legislature recognized that a meaningful valuation of a utility’s assets could
    not be made until the deregulated market endured a period of fluctuation and the rates were allowed
    to stabilize. 
    Id. The legislature
    wisely determined that it might take up to two years for this market
    to stabilize and that following the early mitigation efforts and the beginning of competitive rates,
    there would be a two-year lag time before a utility’s over- or underrecovery of stranded costs could
    be reconciled by the Commission. Tex. Util. Code Ann. § 39.201(l).
    During Phase II, the Commission was authorized to set a “competition transition
    charge” (CTC), which would be added to the transmission and distribution rates for 2002 and 2003
    to allow utilities to recover any stranded costs remaining after the mitigation efforts of Phase I. See
    generally 
    id. § 39.201;
    Reliant, 101 S.W.3d at 135
    . In 2001, each utility was ordered to estimate,
    using the ECOM administrative model with updated data, its stranded costs based on the book value
    of its generation assets on the last day of regulation. Tex. Util. Code Ann. § 39.201(h). In
    determining whether to set a CTC, the Commission was required to consider the newly revised
    stranded cost estimates based on the 2001 ECOM model. Id.; 
    Reliant, 101 S.W.3d at 135
    .
    In a reversal of expectations, the rise of the cost of natural gas made nuclear power
    plants more desirable and hence more valuable in 2001. Instead of having additional stranded costs
    under the 2001 ECOM model estimates, AEP was shown to have negative stranded costs; that is,
    the market value of its nuclear assets greatly exceeded their book value. Given this revised
    projection, AEP had $54 million in excess retained earnings; by using mitigation tools, it had
    5
    overrecovered its estimated stranded costs. It is clear from PURA Chapter 39 that the legislature
    contemplated that even after extensive mitigation efforts, a utility might have remaining stranded
    costs, and it provided a remedy by authorizing the Commission to impose a CTC during 2002 and
    2003. Tex. Util. Code Ann. § 39.201(d). The legislature never contemplated that the estimated
    stranded costs might diminish rather than increase in value; it provided no express remedy for this
    circumstance. Considering its statutory obligation to foster competition while preventing the
    overrecovery of stranded costs, the Commission imposed no CTC and additionally ordered AEP to
    refund the $54 million in retained earnings as an excess mitigation credit to retail electric providers
    (REPs), amortized over five years. 
    Id. § 39.262(a).
    AEP brought suit for judicial review, insisting that the Commission had no authority
    to order a refund of excess mitigation credits before 2004. The district court disagreed and held that
    the Commission had the implied power to take action to reverse the overrecovery of stranded costs
    at the beginning of Phase II, based on the 2001 estimates. The majority contends that the electric
    deregulation scheme is so well-thought out and comprehensive that it leaves no room for
    Commission discretion. Consequently, it argues that the lack of an explicit grant of statutory
    authority establishes that the legislature did not intend for the Commission to take any action to
    address the overrecovery of stranded costs prior to 2004. To the contrary, the legislature authorized
    the Commission to adjust the recovery of stranded costs in the first year of the deregulated market
    because underrecovered costs would have an impact on the new competitive market. However, the
    legislature assumed the only adjustment needed after mitigation efforts would be the imposition of
    a CTC to recover remaining stranded costs. It simply failed to address the possibility of a utility’s
    6
    overrecovery, creating an ambiguity, and yet the overrecovery of stranded costs would also have a
    negative impact on fair and full competition. Consequently, the Commission took action to reduce
    the overrecovered costs by ordering AEP to issue excess mitigation credits to its REPs over a five-
    year period. I would affirm the Commission’s action in ordering the refund when it did because (1)
    Chapter 39 called for the Commission to adjust the recovery of stranded costs at the beginning of
    the deregulated market in 2002 by consulting the 2001 ECOM model; (2) the legislature did not
    provide a specific remedy for the reversal in market conditions that occurred in this case; (3) the
    Commission’s order to refund excess mitigation credits is a reasonable interpretation of an
    ambiguous statute, does not conflict with any specific statutory provision, and promotes the
    underlying purposes of Chapter 39; and (4) the Commission is obligated to prevent the overrecovery
    of stranded costs while promoting full and fair competition among all electric providers. Therefore,
    I conclude that the Commission’s order is entitled to deference.
    Ambiguous scheme
    I begin by rejecting the majority’s notion that the statutory scheme for the transition
    to a deregulated market is so comprehensive that it affords no discretion to the Commission to
    correct an overrecovery while it adjusts the recovery of stranded costs in 2002. The statutory scheme
    is thoughtful and careful, but the transition to deregulation is a complex undertaking and it was
    impossible for the legislature to anticipate every consequence that might arise. Although it was
    mindful of the possibility of enormous capital investments that might exceed the market value of
    generation assets and fail to be recovered by competitive rates, the legislature neglected to consider
    the very circumstance that occurred: the rise in the market value of nuclear generation assets in 2001
    7
    that eliminated the need to mitigate the massive stranded costs that had been projected in 1998. This
    made the legislative scheme ambiguous as to the proper action the Commission should take when
    it was directed to adjust the ECOM projections using 2001 data and impose a CTC if stranded costs
    remained. The Commission was called upon to exercise its expertise and discretion to determine
    what to do when faced with an enormous overrecovery, rather than an underrecovery of stranded
    costs.   In doing so, the Commission determined that its combined duties of implementing
    deregulation in a manner that “encourages full and fair competition among all providers of
    electricity,” and preventing individual utilities from overrecovering stranded costs, compelled it at
    the beginning of the competitive market to order AEP3 to grant excess mitigation credits representing
    overrecovered stranded costs during Phase II, in addition to not imposing a CTC. See 
    id. §§ 39.001(b)(1),
    .262(a).
    We have long recognized that because the legislature cannot contend with every
    imaginable detail involved in carrying out applicable laws, delegation of some legislative power to
    regulatory agencies is both necessary and proper. Texas Workers’ Comp. Comm’n v. Patient
    Advocates, 
    136 S.W.3d 643
    , 654 (Tex. 2004). Thus, the legislature may delegate its powers to
    administrative agencies established to carry out legislative purposes as long as it establishes
    reasonable standards to guide the agencies in exercising those powers. 
    Id. If the
    legislature were
    required to include every detail and anticipate all unforeseen circumstances then there would be no
    need for delegation. See Railroad Comm’n v. Lone Star Gas Co., 
    844 S.W.2d 679
    , 689 (Tex. 1992).
    3
    We note that AEP is the only utility of those identified in 2001 to have overrecovered
    stranded costs that has challenged on appeal the Commission’s authority to order a refund of excess
    mitigation credits prior to the 2004 true-up proceeding.
    8
    The Commission has those powers that the legislature expressly confers upon it. City
    of 
    Austin, 92 S.W.3d at 441
    . In addition, the Commission has any implied power necessary to
    accomplish the express duties that the legislature gives to it.4 
    Id. We give
    serious consideration to
    the Commission’s interpretation of PURA, as long as that interpretation is reasonable and does not
    contradict the plain language of the statute. 
    Id. at 441-42;
    Continental Cas. Co. v. Downs, 
    81 S.W.3d 803
    , 807 (Tex. 2002). Furthermore, we give due deference to an agency’s construction of
    a statute that the agency is charged with enforcing. See Southwestern Bell 
    Tel., 863 S.W.2d at 758
    .
    In order to ascertain whether the Commission possessed the authority to order AEP to refund
    overrecovered stranded costs before the 2004 true-up proceedings, we must analyze Chapter 39 as
    a whole, in the context of the transition to a deregulated electric market. See State v. Public Util.
    Comm’n, 
    883 S.W.2d 190
    , 196 (Tex. 1994) (court must read PURA as a whole to discover
    underlying legislative intent).
    Chapter 39
    When construing Chapter 39 as a whole, it was reasonable for the Commission to
    determine that the legislature intended for it to address a utility’s over-mitigation of stranded costs
    before the 2004 true-up proceedings. See 
    id. For example,
    the Commission is required to consider
    updated stranded cost projections in order to impose or modify a utility’s CTC as deregulation
    begins. Tex. Util. Code Ann. § 39.201(g). Additionally, when determining the length of time a
    4
    Specifically, the legislature granted the Commission the authority to do anything “necessary
    and convenient” to exercise any power that is explicitly provided or implied by PURA. Tex. Util.
    Code Ann. § 14.001 (West 1998).
    9
    utility may recover stranded costs through a CTC, the Commission must consider both the proportion
    of estimated stranded costs to the invested capital of the utility and any other factor consistent with
    public interest as expressed in Chapter 39. 
    Id. § 39.201(k).
    One reasonable consideration should
    be the Commission’s express duty to prevent the overrecovery of stranded costs. See 
    id. § 39.262(a).
    If no stranded costs remain after the Commission reviews a utility’s mitigation efforts, it will not
    impose a CTC. But to permit the utility to retain earnings of $54 million would skew the deregulated
    market by giving that utility an unfair advantage over other competitors and discourage full
    competition. Thus, the Commission should have the authority to address the overrecovery of
    stranded costs by a utility at the same time it would have addressed any underrecovery by setting a
    CTC.
    Additional evidence that the legislature intended for the Commission to take action
    prior to the true-up proceedings can be found in the structure of the three-phase stranded cost
    recovery scheme. The fact that a utility was required to immediately begin mitigating its stranded
    costs during Phase I illustrates the legislature’s desire that the formerly regulated utilities not have
    the burden of waiting until 2004 to recover their costs. Conversely, if the 2001 ECOM model shows
    that the utility has overrecovered stranded costs then it makes sense that the utility should not have
    the privilege of waiting until 2004 to disgorge those excess mitigation costs. Furthermore, it is
    logical to assume that the legislature would establish a scheme that is symmetrical. Therefore, if the
    Commission has the authority to address the underrecovery of stranded costs during Phase II by
    setting a CTC, it must have the authority to adjust the recovery of stranded costs that the utility is
    not entitled to at the time that competition begins. In fact, the manner in which the Commission
    10
    ordered AEP to refund its overrecovered stranded costs parallels the overall treatment of stranded
    costs. Under the statutory scheme AEP was allowed to mitigate its stranded costs immediately
    throughout Phase I (1999-2001). If the 2001 projections had shown that despite AEP’s mitigation
    efforts stranded costs remained, the Commission would have set a CTC immediately in 2002 to
    continue AEP’s recovery during the first two years of competition. Likewise, when the 2001
    projections indicated that AEP’s mitigation efforts had been too successful, the Commission ordered
    AEP to grant excess mitigation credits amortized over five years. The fact that the Commission
    amortized the refund signifies its recognition that the legislature did not intend for the recovery of
    stranded costs to occur in a lump sum at one time, such as the true-up proceeding in 2004. This
    would have an adverse effect on a competitive market. It devised a scheme spreading recovery over
    several years; mitigation would occur early (1999-2001), and would be adjusted in 2002 and 2003,
    prior to a final reconciliation two years after the competitive market had stabilized in 2004. The
    true-up proceeding was to be a final adjustment, not the only adjustment.
    Finally, the Commission’s decision to order refunds of overrecovered stranded costs
    is consistent with Chapter 39’s goal of promoting competitive markets after deregulation. If a utility
    was allowed to retain its excess earnings from Phase I when competition begins it would have an
    unfair advantage over newly created utilities throughout Phase II. Preventing the overrecovery of
    stranded costs is a tool necessary to promote competition by creating a level playing field.
    In conclusion, the Commission’s decision to order AEP to refund its overrecovered
    stranded costs prior to the beginning of competition was reasonable and consistent with its dual goals
    of preventing a utility from overrecovering stranded costs and promoting competition.
    11
    Section 39.262(a)
    The majority correctly asserts that we must construe the relevant provisions of
    Chapter 39 in order to determine the scope of the Commission’s powers. Although the majority cites
    to many of the rules of statutory construction, it ignores two principles that are relevant to this issue.
    First, when statutory text is unambiguous, a court must adopt the interpretation supported by the
    statute’s plain language unless that interpretation would lead to absurd results. See Texas Dep’t of
    Protective & Regulatory Servs. v. Mega Child Care, Inc., 
    145 S.W.3d 170
    , 177 (Tex. 2004).
    Second, the heading of a title, subtitle, chapter, subchapter, or section does not limit or expand the
    meaning of a statute. See Tex. Gov’t Code Ann. § 311.024 (West 2005). I contend that the
    application of these two principles demonstrates that the majority has misconstrued the scope of
    section 39.262(a).
    Section 39.262(a) states that, “[a]n electric utility . . . may not be permitted to
    overrecover stranded costs through the procedures established by this section or through the
    application of the measures provided by the other sections of this chapter.” Tex. Util. Code Ann.
    § 39.262(a). The text does not say when the Commission is to act to prevent the overrecovery of
    stranded costs. Relying mainly on the fact that section 39.262 is in the true-up proceeding section,
    the majority holds that the prohibition found in section 39.262(a) is to be applied only during the
    2004 true-up proceedings. This holding is contrary to the both the plain language of the section and
    the principle that the heading of a section does not limit the specific meaning of a statute.
    The phrase “provided by the other sections of this chapter” in section 39.262(a)
    unambiguously states that the utility not be permitted to overrecover using any mitigation tool during
    12
    any phase, not just in Phase III’s true-up proceedings. Thus, the majority erred by limiting the
    application of section 39.262(a) to the 2004 true-up proceedings. See Mega Child 
    Care, 145 S.W.3d at 177
    .   Furthermore, it is logical that the legislature intended for the prohibition against
    overrecovery to apply at the time that the Commission is instructed to review an updated ECOM
    model to evaluate how effective the accelerated recovery of stranded costs has been during Phase
    I. If adjustments are needed as the competitive market begins in Phase II, why would the
    Commission only be allowed to increase but not decrease a utility’s recovery of stranded costs at that
    time? Logically, the 2002 adjustment contemplating the imposition of a CTC if stranded costs
    remain after mitigation is an adjustment after Phase I, while the true-up proceeding is an adjustment
    to review the affect of the CTC on remaining stranded costs. The true-up proceeding will reconcile
    any stranded costs not recovered through the CTC and mitigation. See Tex. Util. Code Ann.
    §§ 39.251-.265 (West Supp. 2004-05) (true-up section 39.262(a) is part of Subchapter F titled,
    Recovery of Stranded Costs Through Competition Transition Charges).
    Moreover, the fact that the obligation to prevent overrecovery is found in the true-up
    proceeding section of the statute does not, by itself, limit its application as the majority suggests.
    See Tex. Gov’t Code Ann. § 311.024. The title of this section does not control over its language
    because the legislature placed statutes inconsistently throughout chapter 39. See In re 
    TXU, 67 S.W.3d at 149
    n.18 (Brister, J., concurring) (“For example, section 39.201(l) concerning the tools
    available at the true-up is located in the section concerning rate-setting for 2002. Conversely, section
    39.262(b) concerning annual reports by certain utilities beginning in 2002 is located in the section
    concerning the true-up beginning in 2004.”).
    13
    Section 39.262(a) sets forth the overarching principle that a utility should not be
    allowed to overrecover stranded costs. The plain language of the section does not limit when the
    Commission may act to reverse the overrecovery. The goal of fostering fair and full competition
    through deregulation can best be accomplished by correcting over-mitigation as competition begins,
    not by giving the utility with excess retained earnings an unfair advantage for two years. The section
    is unclear as to how the Commission is to enforce this principle when the interim review based on
    2001 data calls for an adjustment to reduce costs recovered. Therefore, I would conclude that we
    should defer to the Commission’s expertise in determining a reasonable method of dealing with the
    overrecovery of stranded costs at that point, which was the beginning of the competitive market.
    Section 39.254
    The majority and AEP insist that utility code section 39.254 orders a utility identified
    as having stranded costs in the 1998 ECOM Report to mitigate its stranded costs each year during
    the recovery scheme, even if interim estimates suggest that the utility has overrecovered at some
    point. However, section 39.254 only states which utilities may use the legislatively provided tools
    to recover stranded costs; it does not state that a utility can continue to mitigate stranded costs based
    on the 1998 estimates when the utility no longer has projected stranded costs. See 
    id. § 39.254;
    In
    re 
    TXU, 67 S.W.3d at 146
    (Brister, J., concurring). Section 39.254 is ambiguous as to which
    stranded costs a utility is to mitigate each year. See In re 
    TXU, 67 S.W.3d at 146
    (Brister, J.,
    concurring).
    The stranded cost recovery scheme calls for a mid-course correction after Phase I.
    If stranded costs remain, the Commission must impose, before the competitive market begins, a
    14
    CTC. But if a utility’s mitigation efforts during Phase I have worked too well, the utility is not
    permitted to retain its windfall, and the Commission must act at that time to prevent the overrecovery
    generated by the mitigation tools.
    The majority argues that a utility’s mitigation efforts are to be based on the 1998
    stranded cost estimates and that the legislature intended for the Commission to deal with any over-
    or underrecovery of stranded costs at the 2004 true-up proceedings. The majority’s construction,
    however, leads to the absurd result in which the Commission is required to rely on interim stranded
    cost projections to increase a utility’s recovery by imposing a CTC, but must ignore those very same
    projections when a reduction in recovery is required. See Utts v. Short, 
    81 S.W.3d 822
    , 832 (Tex.
    2002) (“[W]e must not construe statutes in a way that would lead to an absurd result.”).
    Furthermore, the majority’s construction of section 39.254 is in direct conflict with the plain
    language of section 39.262(a). In light of section 39.254’s ambiguity, I would hold that we should
    defer to the Commission’s construction that section 39.262(a) mandates that it prevent a utility from
    overrecovering stranded costs using mitigation tools during Phase I by reversing a windfall at the
    time it is discovered, not two years later.
    CONCLUSION
    Essentially, the majority avers that it was improper for the Commission to imply the
    authority to order refunds of stranded costs based on estimates projected between Phase I and Phase
    II because the legislature did not explicitly grant the Commission a tool for doing so. However, the
    legislature did not explicitly forbid it from doing so either. Thus, the issue here is whether it was
    reasonable for the Commission to imply the power to order the refunds. See City of Austin, 
    92 15 S.W.3d at 441-42
    (Commission has powers expressly conferred upon it by legislature and any
    implied powers necessary to accomplish its express duties). The legislature mandated that the
    Commission prevent a utility from using any of the tools provided in Chapter 39 to overrecover
    stranded costs and implement deregulation in a manner that promotes competition among all
    providers of electricity. Moreover, ordering the refunds did not conflict with any express provision,
    or the overall intent, of PURA Chapter 39. For all the reasons set forth, the Commission’s
    construction of the statute and its obligations under the statute is reasonable. Therefore, it is entitled
    to deference by this Court. The majority’s construction of the statute may be reasonable as well, but
    an agency’s interpretation need not be the only permissible interpretation to be entitled to deference.
    The majority may not substitute its judgment for that of the Commission’s in addressing a
    circumstance not specifically addressed in the statute. This Court must defer to the Commission’s
    interpretation in this complex transition from regulation to deregulation of the electric industry.
    Accordingly, I respectfully dissent.
    Bea Ann Smith, Justice
    Before Justices B. A. Smith, Patterson and Pemberton
    Filed: September 23, 2005
    16