Nextera Energy Resources LLC v. Iowa Utilities Board , 815 N.W.2d 30 ( 2012 )


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  •                IN THE SUPREME COURT OF IOWA
    No. 10–2080
    Filed June 8, 2012
    NEXTERA ENERGY RESOURCES LLC,
    Appellant,
    vs.
    IOWA UTILITIES BOARD,
    Appellee,
    MIDAMERICAN ENERGY COMPANY and
    OFFICE OF CONSUMER ADVOCATE,
    Intervenors-Appellees.
    Appeal from the Iowa District Court for Polk County, Scott D.
    Rosenberg, Judge.
    An energy company appeals a district court decision affirming the
    Iowa Utility Board’s decision to grant advance ratemaking principles to a
    regulated utility. AFFIRMED
    Bret A. Dublinske of Gonzalez Saggio & Harlan LLP, West Des
    Moines, Victoria J. Place, Des Moines, and Peter L. Gardon and Bryan K.
    Nowicki of Reinhart Boerner Van Deuren S.C., Madison, Wisconsin, for
    appellant.
    David J. Lynch and Gary D. Stump, Des Moines, for appellee Iowa
    Utilities Board.
    2
    Steven L. Nelson of Davis, Brown, Koehn, Shors & Roberts, P.C.,
    Des Moines, and Steven R. Weiss and Charles R. Montgomery,
    Urbandale, for appellee MidAmerican Energy Company.
    Mark R. Schuling and Ronald C. Polle, Des Moines, for appellee
    Office of Consumer Advocate.
    3
    WIGGINS, Justice.
    NextEra Energy Resources, LLC, appeals the Iowa Utility Board’s
    decision to grant advance ratemaking principles to MidAmerican Energy
    Company for the Wind VII Iowa Project, a proposed wind generation
    facility. NextEra raises issues pertaining to the Board’s interpretation of
    Iowa     Code   section   476.53   (2009),   whether   substantial   evidence
    supported the Board’s findings, the applicability of section 476.43 to the
    ratemaking proceeding, and section 476.53’s constitutionality as applied
    to a rate-regulated public utility that may compete in the wholesale
    energy market.      After the Board approved MidAmerican’s application,
    NextEra sought judicial review of that decision.          The district court
    affirmed the Board.
    On appeal, we find (1) the Board properly interpreted and applied
    section 476.53, (2) substantial evidence supported the Board’s findings,
    (3) section 476.43 is not applicable to this ratemaking proceeding, and
    (4) section 476.53 as applied to a rate-regulated public utility that may
    compete in the wholesale energy market does not violate the Equal
    Protection Clauses of the Iowa or United States Constitutions or the
    Commerce Clause of the United States Constitution.          Accordingly, we
    affirm the judgment of the district court affirming the judgment of the
    Board.
    I. Background Facts and Proceedings.
    On March 25, 2009, MidAmerican filed an application with the
    Board for advance ratemaking principles for Wind VII, a project involving
    the generation of up to 1001 megawatts of wind energy. MidAmerican is
    a rate-regulated utility subject to the Board’s regulatory authority
    pursuant to chapter 476 of the Iowa Code. MidAmerican is obligated to
    serve all retail electric customers in its exclusive service territory and
    4
    sells excess power in the wholesale market subject to the Board’s
    regulations. Prior to its application for ratemaking principles for Wind
    VII, MidAmerican sought and received ratemaking principles for six wind
    generation projects ranging from 50 to 540 megawatts.
    Before filing its application, MidAmerican entered into a stipulation
    and agreement with the Office of Consumer Advocate. The agreement,
    which     accompanied     MidAmerican’s     application,   addressed    twelve
    ratemaking principles.      It also stipulated MidAmerican had met the
    conditions precedent for receiving ratemaking principles.
    MidAmerican stated numerous reasons for pursuing Wind VII. In
    particular, MidAmerican stated the following reasons underlie its
    decision to expand its wind power generating capacity: (1) the State’s
    encouragement of the generation of renewable energy; (2) positive
    experiences with its own existing wind projects; (3) timing and economics
    that are advantageous for MidAmerican’s customers; (4) soft market
    conditions, which allow MidAmerican to obtain reasonably priced
    turbines; (5) a projection that Wind VII will essentially pay for itself over
    its twenty-year depreciable life, mitigating the need to increase rates in
    the future; (6) an increased likelihood that Congress will enact carbon
    legislation,    making   wind   power   more   valuable    to   MidAmerican’s
    customers; and (7) its desire to further increase fuel diversity.
    On April 17, NextEra filed a petition to intervene and objected to
    the stipulation and agreement, arguing the Board should not award
    advance ratemaking principles to MidAmerican for Wind VII. 1 NextEra is
    an independent wholesale energy producer that sells electricity in the
    wholesale market. It is North America’s largest producer of wind energy
    1IberdrolaRenewables, Inc., and Interstate Power and Light Company also
    intervened; however, neither sought judicial review of the Board’s decision.
    5
    and, in August 2009, owned sixty-five wind facilities in the United States
    and Canada, including facilities in Iowa. Because it is an independent
    energy producer, chapter 476 does not apply to NextEra, the Board does
    not regulate NextEra, and NextEra does not have an obligation to serve
    retail customers.
    NextEra believes that MidAmerican is pursuing Wind VII solely as
    a vehicle to increase MidAmerican’s presence in the wholesale energy
    market and that the awarding of ratemaking principles would give
    MidAmerican a competitive advantage in the wholesale market. NextEra
    believes the award of ratemaking principles for Wind VII would impose
    risks on MidAmerican’s ratepayers that should instead be borne by its
    shareholders.   Further, NextEra would like to sell renewable energy to
    MidAmerican, either through a purchase power agreement or by
    developing and selling a wind farm to MidAmerican.
    The Board granted advance ratemaking principles for Wind VII to
    MidAmerican.    NextEra timely filed a petition for judicial review.   The
    district court affirmed the Board’s decision. NextEra appeals. Additional
    background facts and proceedings will be set out below as they relate to
    each issue.
    II. Issues.
    NextEra presents the following issues for review: (1) whether the
    Board incorrectly applied the “need” requirement of section 476.53;
    (2) whether the Board failed to require MidAmerican to compare Wind VII
    with other feasible alternatives as required by section 476.53(4)(c)(2);
    (3) whether the Board’s decision to grant advance ratemaking principles
    to NextEra was supported by substantial evidence; (4) whether the Board
    erred in determining section 476.43 did not apply to MidAmerican’s
    application for advance ratemaking principles for Wind VII; (5) whether
    6
    section 476.53, as applied to a rate-regulated utility that may compete in
    the wholesale energy market, violates the equal protection guarantees of
    the United States or Iowa Constitutions; and (6) whether section 476.53,
    as applied to a rate-regulated utility that may compete in the wholesale
    energy market, violates the Commerce Clause of the United States
    Constitution.
    III. Interpretation of the “Need” Requirement of Section
    476.53.
    When a rate-regulated public utility files an application to
    construct a wind energy generating facility, Iowa Code section 476.53
    requires the Board to specify in advance the ratemaking principles that
    will apply when the costs of the facility are included in regulated electric
    rates. Iowa Code § 476.53(4)(a)(1). Before the Board may determine the
    applicable ratemaking principles, section 476.53(4) requires the Board to
    find that “[t]he rate-regulated public utility has demonstrated to the
    board that the public utility has considered other sources for long-term
    electric supply and that the facility . . . is reasonable when compared to
    other feasible alternative sources of supply.”       
    Id. § 476.53(4)(c)(2).
    Section 476.53(4) then contemplates that the utility may satisfy this
    requirement “through a competitive bidding process, under rules adopted
    by the board, which demonstrate the facility . . . is a reasonable
    alternative to meet its electric supply needs.”   
    Id. NextEra argues
    the
    Board incorrectly applied this “need” requirement.
    A.   Scope of Review.       Iowa Code section 17A.19(10) governs
    judicial review of administrative agency decisions.      Auen v. Alcoholic
    Beverages Div., 
    679 N.W.2d 586
    , 589 (Iowa 2004). To decide this issue
    we must interpret section 476.53. To determine the applicable standard
    of review of an agency’s interpretation of a statute, we must determine
    7
    whether the legislature clearly vested the agency with the authority to
    interpret the statute at issue. Doe v. Iowa Dep’t of Human Servs., 
    786 N.W.2d 853
    , 857 (Iowa 2010). If the legislature clearly vested the agency
    with the authority to interpret specific terms of a statute, then we defer
    to the agency’s interpretation of the statute and may only reverse if the
    interpretation is “irrational, illogical, or wholly unjustifiable.” Id.; accord
    Renda v. Iowa Civil Rights Comm’n, 
    784 N.W.2d 8
    , 10 (Iowa 2010); see
    also Iowa Code § 17A.19(10)(l). If, however, the legislature did not clearly
    vest the agency with the authority to interpret the statute, then our
    review is for correction of errors at law. 
    Doe, 786 N.W.2d at 857
    ; see also
    Iowa Code § 17A.19(10)(c).
    When making this determination, we look carefully “at the specific
    language the agency has interpreted as well as the specific duties and
    authority given to the agency with respect to enforcing particular
    statutes.”   
    Renda, 784 N.W.2d at 13
    .       Although “[t]he legislature may
    explicitly vest the authority to interpret an entire statutory scheme with
    an agency[,] . . . the fact that an agency has been granted rule making
    authority does not ‘give[] an agency the authority to interpret all
    statutory language.’ ” Evercom Sys., Inc. v. Iowa Utils. Bd., 
    805 N.W.2d 758
    , 762 (Iowa 2011) (quoting 
    Renda, 784 N.W.2d at 13
    ). Furthermore,
    “broad articulations of an agency’s authority, or lack of authority, should
    be avoided in the absence of an express grant of broad interpretive
    authority.” 
    Renda, 784 N.W.2d at 14
    .
    Certain guidelines have emerged to help us determine whether the
    legislature clearly vested interpretative authority in the agency, two of
    which are relevant here. 
    Id. First, “when
    the statutory provision being
    interpreted is a substantive term within the special expertise of the
    agency, . . . the agency has been vested with the authority to interpret
    8
    the provisions.” 
    Id. Second, “[w]hen
    a term has an independent legal
    definition that is not uniquely within the subject matter expertise of the
    agency, we generally conclude the agency has not been vested with
    interpretative authority.”   
    Id. In sum,
    in order for us to find the
    legislature clearly vested the Board with authority to interpret section
    476.53, we
    must have a firm conviction from reviewing the precise
    language of the statute, its context, the purpose of the
    statute, and the practical considerations involved, that the
    legislature actually intended (or would have intended had it
    thought about the question) to delegate to the agency
    interpretive power with the binding force of law over the
    elaboration of the provision in question.
    
    Doe, 786 N.W.2d at 857
    (citation and internal quotation marks omitted).
    Accordingly, we must determine whether the general assembly
    explicitly vested the Board with the authority to interpret specific terms
    in chapter 476. In the first section of chapter 476, the general assembly
    granted the Board authority to “regulate the rates and services of public
    utilities to the extent and in the manner hereinafter provided.”        Iowa
    Code § 476.1.     The general assembly also granted the Board broad
    general powers to carry out the purposes of chapter 476. 
    Id. § 476.2(1).
    Section 476.2(1) states:
    The board shall have broad general powers to effect the
    purposes of this chapter notwithstanding the fact that
    certain specific powers are hereinafter set forth. The board
    shall have authority to issue subpoenas and to pay the same
    fees and mileage as are payable to witnesses in the courts of
    record of general jurisdiction and shall establish all needful,
    just and reasonable rules, not inconsistent with law, to
    govern the exercise of its powers and duties, the practice and
    procedure before it, and to govern the form, contents and
    filing of reports, documents and other papers provided for in
    this chapter or in the board’s rules. In the establishment,
    amendment, alteration or repeal of any of such rules, the
    board shall be subject to the provisions of chapter 17A.
    9
    
    Id. However, simply
    because the general assembly granted the Board
    broad general powers to carry out the purposes of chapter 476 and
    granted it rulemaking authority does not necessarily indicate the
    legislature clearly vested authority in the Board to interpret all of chapter
    476.
    In granting the Board rulemaking authority, the general assembly
    used the following language: “The Board . . . shall establish all needful,
    just and reasonable rules . . . to govern the exercise of its powers and
    duties.” 
    Id. § 476.2(1).
    While “govern” means, “to exercise arbitrarily or
    by established rules continuous sovereign authority over,” it also means
    “to rule without sovereign power.”       Webster’s Third New International
    Dictionary 982 (unabr. ed. 2002). This second definition is synonymous
    with implementing or administering.        See 
    id. “Exercise” means
    “the
    discharge of an official function or professional occupation.” 
    Id. at 795.
    From these definitions, we can draw two possible conclusions. The
    general assembly may have intended that the Board exercise sovereign
    authority in discharging its official function of effecting the purposes of
    chapter 476.    However, the general assembly may also have intended
    that the Board merely implement or administer the laws contained in
    chapter 476 without sovereign authority.         Furthermore, the general
    assembly expressly subjected the Board to chapter 17A, the Iowa
    Administrative Procedure Act, which specifically provides for “legislative
    oversight of powers and duties delegated to administrative agencies.”
    Iowa Code § 17A.1(3). Therefore, because of the ambiguous definition of
    “govern” and the express reference to chapter 17A, we conclude under
    Renda that the general assembly did not delegate to the Board
    interpretive power with the binding force of law.      Accordingly, we will
    10
    examine       the   Board’s    interpretation      of   section    476.53(4)(c)(2)   for
    correction of errors at law. 
    Id. § 17A.19(10)(c).
    B.   Interpretation of Section 476.53.                   NextEra claims the
    “electric supply needs” language in section 476.53(4)(c)(2) requires the
    Board to determine Iowa ratepayers need the electrical supply the
    proposed project will generate before it can grant an order specifying
    advance ratemaking principles.             After conceding MidAmerican did not
    have an immediate need for additional wind energy capacity, the Board
    interpreted section 476.53(4)(c)(2)’s “need” requirement to be broader
    than alleged by NextEra. The Board concluded the “need” requirement
    not only includes present capacity, but that it also includes needs based
    on compliance with present and future environmental regulations, fuel
    diversity, the supply of less expensive energy to its consumers, and the
    promotion of economic development and Iowa’s energy policy. The Board
    stated    consideration       of   these   needs    demonstrated       MidAmerican’s
    compliance with its statutory obligation to plan prudently to provide
    reasonable and adequate service to its retail customers at just and
    reasonable rates.
    In 2009, section 476.53 provided in relevant part:
    1. It is the intent of the general assembly to attract the
    development of electric power generating and transmission
    facilities within the state in sufficient quantity to ensure
    reliable electric service to Iowa consumers and provide
    economic benefits to the state.
    2. The general assembly’s intent with regard to the
    development of electric power generating and transmission
    facilities, as provided in subsection 1, shall be implemented
    in a manner that is cost-effective and compatible with the
    environmental policies of the state, as expressed in Title XI.
    
    Id. § 476.53(1)–(2).
                                           11
    While this case was on judicial review, the general assembly
    passed a bill amending subsections (1) and (2) of section 476.53, which
    the governor subsequently signed into law. 2010 Iowa Acts ch. 1176 § 2
    (codified at Iowa Code § 476.53(1)–(2) (2011)).        The general assembly
    added the following intent language to subsection (1):           “It is also the
    intent of the general assembly to encourage rate-regulated public utilities
    to   consider   altering   existing   electric   generating   facilities,   where
    reasonable, to manage carbon emission intensity in order to facilitate the
    transition to a carbon-constrained environment.” 
    Id. Further, the
    general assembly amended subsection (2) by adding
    the following language:
    b. The general assembly’s intent with regard to the
    reliability of electric service to Iowa consumers, as provided
    in subsection 1, shall be implemented by considering the
    diversity of the types of fuel used to generate electricity, the
    availability and reliability of fuel supplies, and the impact of
    the volatility of fuel costs.
    
    Id. The bill
    also deleted outdated provisions in section 476.53 regarding
    a cogeneration pilot program that the general assembly repealed in 2007
    and amended the statute to apply to significant alterations of existing
    generating facilities. 
    Id. The general
    assembly thought this bill was of
    such importance that it amended the bill to take immediate effect upon
    enactment. 
    Id. § 3.
    In interpreting section 476.53, we attempt to determine the general
    assembly’s intent. See State v. McCoy, 
    618 N.W.2d 324
    , 325 (Iowa 2000).
    We “may not extend, enlarge or otherwise change the meaning of a
    statute” under the guise of construction.         
    Auen, 679 N.W.2d at 590
    .
    Additionally, when the legislative history discloses that the general
    assembly may have amended a statute simply to remove doubt from a
    12
    previous statute, we are required to give effect to that purpose. Barnett v.
    Durant Cmty. Sch. Dist., 
    249 N.W.2d 626
    , 629 (Iowa 1977). The rule for
    determining whether a legislative change in a statute modifies or clarifies
    the original statute is as follows:
    Where the original law was subject to very serious doubt, by
    permitting subsequent amendments to control the former
    meaning a great deal of uncertainty in the law is removed.
    And the legislature is probably in the best position to
    ascertain the most desirable construction. In addition it is
    just as probable that the legislature intended to clear up
    uncertainties, as it did to change existing law where the
    former law is changed in only minor details. Thus it has
    been asserted that “one well recognized indication of
    legislative intent to clarify, rather than change, existing law
    is doubt or ambiguity surrounding a statute.” The New York
    court has established the following test: “The force which
    should be given to subsequent, as affecting prior legislation,
    depends largely upon the circumstances under which it
    takes place. If it follows immediately and after controversies
    upon the use of doubtful phraseology therein have arisen as
    to the true construction of the prior law it is entitled to great
    weight . . . . If it takes place after a considerable lapse of
    time and the intervention of other sessions of the legislature,
    a radical change of phraseology would indicate an intention
    to supply some provisions not embraced in the former
    statute.”
    Orr v. Lewis Cent. Sch. Dist., 
    298 N.W.2d 256
    , 260 (Iowa 1980) (citation
    and internal quotation marks omitted).
    Applying these principles, we find the general assembly did not
    intend the “need” requirement of section 476.53 to only include present
    capacity, but rather the general assembly also intended it to include
    needs based on other considerations such as fuel diversity, the supply of
    less expensive energy to consumers, and compliance with future
    environmental regulations requiring clean energy.           We reach this
    conclusion for a number of reasons.
    13
    First, prior to the 2010 amendments, the statute stated it was the
    general assembly’s intent that the statute be compatible with the
    environmental policies of the state, as expressed in Title XI of the Code,
    of which section 476.53 is a part.     See Iowa Code § 476.53(2) (2009).
    Title XI deals with a myriad of environmental issues, including energy
    independence initiatives, such as those that reduce greenhouse gas
    emissions and carbon sequestration.         See, e.g., 
    id. § 469.9(4)(b)(3).
    Compliance with environmental regulations, present or future, requiring
    clean energy, diversifying fuel sources, and accounting for the impact of
    the volatility of fuel prices are the types of issues that would be
    consistent with Title XI. They are also consistent with a legislative intent
    that utilities plan prudently to provide reasonable and adequate service
    to retail customers at just and reasonable rates.
    Second, when the general assembly amended the statute by adding
    the intent language in subsections (1) and (2), it did not make any
    substantive changes to the statute indicative of a legislative intent to
    change the statute’s underlying goals or reasons. In subsection (2), the
    general assembly left intact the language indicating its intent that
    section 476.53 be compatible with Title XI and added the language
    requiring the consideration of “the diversity of the types of fuel used to
    generate electricity, the availability and reliability of fuel supplies, and
    the impact of the volatility of fuel costs.” See 
    id. § 476.53(2)(b)
    (2011).
    Moreover, while subsection (1) of the previous version indicated
    legislative intent to encourage the development of electric generating
    facilities to provide reliable service to consumers, the general assembly
    amended subsection (1) by simply adding language indicating its intent
    to encourage utilities to adapt their facilities for a carbon-constrained
    environment. Compare 
    id. § 476.53(1)
    (2009), with 
    id. § 476.53(1)
    (2011).
    14
    The amendment to the statute to permit its application to significant
    alterations of existing facilities furthers this intent.     Therefore, the
    general assembly’s inclusion of additional intent language in the statute,
    without making changes other than deleting outdated provisions, leads
    us to conclude the additional intent language clarified the original intent
    rather than adding a new intent.
    Finally, at the time the general assembly added the intent
    language, the issue of whether the Board could consider these factors
    was being litigated in the courts. The timing of the amendment confirms
    that the general assembly was trying to clarify the law in this area. See
    
    Barnett, 249 N.W.2d at 629
    –30.
    Therefore, we conclude the Board correctly construed section
    476.53 to allow it to consider compliance with future environmental
    regulations, fuel diversity, the volatility of fuel prices, and the supply of
    less expensive energy to consumers.
    IV. Interpretation      of   Other   Feasible    Alternatives    Under
    476.53(4)(c)(2).
    Section 476.53(4)(c)(2) requires the Board to find that “the rate-
    regulated public utility has demonstrated to the board that [it] has
    considered other sources for long-term electric supply” and that its
    proposed facility “is reasonable when compared to other feasible
    alternative sources of supply.”      Iowa Code § 476.53(4)(c)(2) (2009)
    (emphasis added).
    A. Scope of Review. The resolution of this issue also involves the
    Board’s interpretation of section 476.53(4)(c)(2).     Accordingly, we will
    review the Board’s interpretation of “other feasible alternative sources of
    supply” under 476.53(4)(c)(2) for correction of errors at law pursuant to
    section 17A.19(10)(c).
    15
    B. Analysis. NextEra sets forth two reasons for its contention the
    Board failed to require MidAmerican to compare Wind VII with “other
    feasible alternatives.”   First, it argues that “other feasible alternatives”
    necessarily requires comparison to other generating facilities using the
    same power source, which in this case is wind. Second, it argues the
    Board improperly permitted MidAmerican to attempt to perform a
    postapplication comparison with a wind alternative during the Wind VII
    proceeding,    instead    of   a   preapplication   comparison.    It   argues
    MidAmerican did not engage in commercial negotiations, but instead
    compared Wind VII with a sample NextEra purchase power agreement
    obtained through discovery. NextEra argues the Board’s misapplication
    of the comparison requirement opens the door for utilities to avoid
    competition, which denies their customers the benefits that competition
    brings in contravention of Iowa public policy.
    When the general assembly fails to provide a statutory definition or
    a word does not have an established meaning in law, we give the words
    their ordinary and common meaning by considering the context in which
    the general assembly used them. State v. Stone, 
    764 N.W.2d 545
    , 549
    (Iowa 2009). “Considered” is the past tense of “consider,” which means
    “to reflect on: think about with a degree of caution.” Webster’s Third New
    International Dictionary 483.        “Other” is defined as “being the ones
    distinct from the one or those first mentioned or understood,” i.e., an
    alternative.   
    Id. at 1598.
       “Compared” is the past tense of “compare,”
    which means “to examine the character or qualities of (as two or more
    . . . things) esp. for the purpose of discovering resemblances or
    differences.” 
    Id. at 462.
    “Feasible” means “capable of being . . . utilized
    . . . successfully.” 
    Id. at 831.
    Finally, “alternatives” is the plural form of
    16
    “alternative,” which means “offering a choice of two or more things
    wherein if one thing is chosen the other is rejected.” 
    Id. at 63.
    Taking these definitions together with the language of section
    476.53(4)(c)(2), we conclude this section requires a utility to do no more
    than demonstrate its proposed facility is reasonable in light of the fact
    the utility cautiously thought about the character or qualities of
    alternative sources for long-term electric supply it could successfully
    utilize. The statute does not require the utility to compare the facility
    only to alternatives of the same generation source.
    In addition, the intent of this Code section refers to, “electric power
    generating and transmission facilities.”           Iowa Code § 476.53(1).
    Therefore, this section of the Code is not limited solely to wind energy or
    other sources of renewable energy. Finally, the primary goals of section
    476.53 are to “ensure reliable electric service to Iowa consumers and
    provide economic benefits to the state.” 
    Id. There are
    sources of long-
    term electric supply besides wind that meet these goals. In addition to
    conventional generation sources, such as fossil fuels, Iowa law recognizes
    renewable generation sources other than wind, including solar, biomass,
    and hydroelectric energies. See 
    id. § 476.42(1)(a),
    (4) (defining “alternate
    energy production facility” and “small hydro facility”).
    Based on this analysis, the general assembly did not intend “other
    feasible alternatives” to include only alternatives of the same generation
    type. To achieve the general assembly’s goals and considering the plain
    language   of   the   statute,   the   only   practical   reading   of   section
    476.53(4)(c)(2) is that it permits comparison with alternatives of different
    generation types.      Therefore, the Board did not err in allowing
    MidAmerican to compare Wind VII to alternatives other than wind
    energy.
    17
    NextEra’s second contention is the Board permitted MidAmerican
    to perform a postapplication comparison with a wind alternative during
    the Wind VII proceeding and the statute requires MidAmerican to
    perform      this   comparison       prior   to    submitting    its   application   for
    ratemaking      principles.         However,      the   plain   language   of   section
    476.53(4)(c)(2) does not require the utility to demonstrate it has
    performed the comparison prior to filing its application. Similarly, the
    section does not require a utility to compare its proposed facility with
    other     proposed    facilities.      The     only     requirement    under    section
    476.53(4)(c)(2) is that the utility compares its proposed facility to other
    feasible supply sources prior to receiving ratemaking principles.
    Accordingly, the Board properly interpreted the other feasible
    alternatives language contained in section 476.53(4)(c)(2).
    V. Substantial Evidence Claims.
    The next issue we must consider is whether substantial evidence
    supported the Board’s findings that MidAmerican met the “need”
    requirement and considered other feasible alternatives of section
    476.53(4)(c)(2).
    A.   Scope of Review. We must “reverse, modify, or grant other
    appropriate relief from agency action” that is “not supported by
    substantial evidence in the record . . . when that record is viewed as a
    whole.”      
    Id. § 17A.19(10)(f).
         The Iowa Administrative Procedure Act
    defines “substantial evidence” as follows:
    [T]he quantity and quality of evidence that would be deemed
    sufficient by a neutral, detached, and reasonable person, to
    establish the fact at issue when the consequences resulting
    from the establishment of that fact are understood to be
    serious and of great importance.
    18
    
    Id. § 17A.19(10)(f)(1).
      When reviewing a finding of fact for substantial
    evidence, we adjudicate the finding “in light of all the relevant evidence in
    the record cited by any party that detracts from that finding . . . [or] that
    supports it.” 
    Id. § 17A.19(10)(f)(3).
    “The agency’s decision does not lack
    substantial evidence merely because the interpretation of the evidence is
    open to a fair difference of opinion.” ABC Disposal Sys., Inc. v. Dep’t of
    Natural Res., 
    681 N.W.2d 596
    , 603 (Iowa 2004).
    B. The     “Need”     Requirement.        In    determining   whether
    MidAmerican satisfied the “need” requirement of section 476.53(4)(c)(2),
    the   Board   could consider     compliance    with   future   environmental
    regulations requiring clean energy, fuel diversity, and the supply of less
    expensive energy to consumers.            The record reveals MidAmerican
    demonstrated Wind VII would defer a capacity deficiency from 2019 to
    2020. Furthermore, because of the benefits of Wind VII, MidAmerican is
    able to project a capacity deficiency of a mere 21 megawatts in 2020.
    Further, the record contains substantial evidence Wind VII would
    satisfy a need for an electric supply with lower emissions, especially in
    light of potential future carbon legislation; a need for an electric supply
    that produces low-cost energy; a need for an electric supply that
    enhances fuel diversity; a need for MidAmerican to maintain reasonable
    prices for its customers; a need to promote economic development in
    Iowa; and a need to promote the use of renewable energy.
    Therefore, substantial evidence supports the Board’s finding of the
    “need” requirement under section 476.53(4)(c)(2).
    C. Other Feasible Alternatives.           The record demonstrates
    MidAmerican compared wind generation generally to conventional and
    renewable generation alternatives prior to submitting its application and,
    prior to the Board’s decision, MidAmerican compared Wind VII with
    19
    NextEra’s purchase power agreement.             MidAmerican’s application for
    advance ratemaking principles generally compares wind power to
    renewable energy alternatives, including biomass energy, hydroelectric
    energy, solar energy, and geothermal energy based on availability,
    economic practicality, and maturity.          It also compares wind power to
    coal- and gas-fired power plants in terms of cost, cost robustness,
    environmental reasonableness, system reliability, economic value to the
    local area, political uncertainty, flexibility, and diversity.
    The testimony of MidAmerican’s manager of market assessment
    further details MidAmerican’s comparison of Wind VII to conventional
    and renewable generation alternatives. The record contains evidence as
    to MidAmerican’s six-stage resource planning process, the different
    analytical   models    used    during    the    process,   and    other   criteria
    MidAmerican uses to further evaluate the attractiveness of other
    generation sources.
    Accordingly, the record supports a finding that MidAmerican
    compared its proposed facility to other feasible supply sources prior to
    receiving ratemaking principles. Thus, substantial evidence supports the
    Board’s finding that MidAmerican complied with the requirements of
    section 476.53(4)(c)(2) by demonstrating “to the board that the public
    utility has considered other sources for long-term electric supply and
    that the facility . . . is reasonable when compared to other feasible
    alternative sources of supply.”
    VI. Applicability of Iowa Code Section 476.43.
    We must next determine whether the Board erred in determining
    section 476.43 did not apply to MidAmerican’s application for advance
    ratemaking    principles.      Section       476.43   requires,   under   certain
    20
    conditions, that electric utilities not discriminate against alternate energy
    producers.
    A. Scope of Review.       The resolution of this issue involves the
    Board’s interpretation of sections 476.43 and 476.44. Accordingly, we
    will review the interpretation of sections 476.43 and 476.44 for
    correction of errors at law pursuant to section 17A.19(10)(c).
    B. Analysis.      NextEra argues the Board failed to require
    MidAmerican to comply with Iowa Code section 476.43. Section 476.43
    provides, in relevant part:
    1. Subject to section 476.44, the board shall require
    electric utilities to do both of the following under terms and
    conditions that the board finds are just and economically
    reasonable for the electric utilities’ customers, are
    nondiscriminatory to alternate energy producers and small
    hydro producers, and will further the policy stated in section
    476.41:
    a. At least one of the following:
    (1) Own alternate energy production facilities or small
    hydro facilities located in this state.
    (2) Enter into long-term contracts to purchase or wheel
    electricity from alternate energy production facilities or small
    hydro facilities located in the utility’s service area.
    b. Provide for the availability of supplemental or backup
    power to alternate energy production facilities or small hydro
    facilities on a nondiscriminatory basis and at just and
    reasonable rates.
    Iowa Code § 476.43 (emphasis added). The Board found section 476.43
    did not apply to this situation because of an exception contained in
    section 476.44.      In particular, the Board relied on the following
    exception:
    2. a. An electric utility subject to this division, except a
    utility that elects rate regulation pursuant to section 476.1A,
    shall not be required to own or purchase, at any one time,
    21
    more than its share of one hundred five megawatts of power
    from alternative energy production facilities or small hydro
    facilities at the rates established pursuant to section 476.43.
    
    Id. § 476.44(2)(a)
    (emphasis added).
    The   language         of   sections     476.43    and       476.44     clearly   and
    unambiguously provide that a utility that owns or purchases, “at any one
    time, more than its share of one hundred five megawatts of power from
    alternative energy production facilities” is exempt from the requirements
    of section 476.43. The record establishes that even without Wind VII,
    MidAmerican owns 1,284.3 megawatts of wind-powered generation and
    purchases another 109.1 megawatts of wind power.                            Accordingly, the
    Board      correctly     found       that   MidAmerican         is     exempt     from     the
    requirements of section 476.43 because it already meets the statutorily
    required minimum of 105 megawatts.
    VII. Equal Protection Claim.
    We must next determine whether the Board’s decision to grant
    MidAmerican advance ratemaking principles for Wind VII violates the
    Equal Protection Clauses of the United States or Iowa Constitutions.
    A. Scope of Review. We can grant relief from agency action if the
    action is “[u]nconstitutional on its face or as applied or is based upon a
    provision of law that is unconstitutional on its face or as applied.” 
    Id. § 17A.19(10)(a).
    We do not give any deference to the agency with respect
    to the constitutionality of a statute or administrative rule because it is
    entirely    within      the    province     of   the     judiciary     to    determine     the
    constitutionality of legislation enacted by other branches of government.
    ABC     Disposal       
    Sys., 681 N.W.2d at 605
    ;    see    also    Iowa      Code
    § 17A.19(11)(b). Accordingly, we review constitutional issues in agency
    proceedings de novo.                Swanson v. Civil Commitment Unit for Sex
    Offenders, 
    737 N.W.2d 300
    , 306 (Iowa 2007).
    22
    B. Analysis. NextEra contends the Board’s application of section
    476.53, as applied to subsidize a wholesale market endeavor, violates the
    Equal Protection Clause of the Fourteenth Amendment of the United
    States Constitution and the equal protection provision found in article I,
    section 6 of the Iowa Constitution.      By its terms, section 476.53 only
    applies to rate-regulated utilities. MidAmerican is a rate-regulated public
    utility obligated to serve all retail electric customers in its exclusive
    service territory. NextEra is an independent wholesale energy producer.
    Therefore, NextEra is ineligible for ratemaking principles treatment under
    section 476.53 because it is not a rate-regulated public utility.       The
    proper determination is broader than that urged by NextEra. The issue
    is not whether the Board’s application of section 476.53 to MidAmerican
    in this case was unconstitutional, but rather, whether any application of
    section 476.53 to a rate-regulated utility that may engage in competition
    in the wholesale energy market is unconstitutional because it violates the
    constitutional guarantees of equal protection.
    The Equal Protection Clause of the Fourteenth Amendment of the
    United States Constitution provides that “[n]o State shall . . . deny to any
    person within its jurisdiction the equal protection of the laws.”      U.S.
    Const. amend. XIV, § 1.      The Iowa Constitution’s counterpart to the
    federal clause provides that “[a]ll laws of a general nature shall have a
    uniform operation; the general assembly shall not grant to any citizen, or
    class of citizens, privileges or immunities, which, upon the same terms
    shall not equally belong to all citizens.”       Iowa Const. art. I, § 6.
    Corporations are persons for the purposes of equal protection. See Chi.
    & N.W. Ry. v. Fachman, 
    255 Iowa 989
    , 995, 
    125 N.W.2d 210
    , 213 (1963);
    McGuire v. Chi., B. & Q.R. Co., 
    131 Iowa 340
    , 350, 
    108 N.W. 902
    , 905
    (1906); see also Wheeling Steel Corp. v. Glander, 
    337 U.S. 562
    , 571–72,
    23
    
    69 S. Ct. 1291
    , 1296, 
    93 L. Ed. 1544
    , 1551 (1949) (finding that, where a
    state has chosen to domesticate foreign corporations, the adopted
    corporations are entitled to equal protection with the state’s own
    corporate progeny).
    When a party raises an issue involving parallel provisions of the
    State and Federal Constitutions, a number of principles emerge from our
    cases.     First, we jealously reserve the right to develop an independent
    framework under the Iowa Constitution. Racing Ass’n of Cent. Iowa v.
    Fitzgerald (RACI), 
    675 N.W.2d 1
    , 5 (Iowa 2004). Second, when a party
    does not urge that we adopt a standard under the Iowa Constitution
    different from that under the Federal Constitution, we generally proceed
    under the standard proposed by the party. See, e.g., 
    id. at 6.
    Even in
    cases where a party has not suggested that our approach under the Iowa
    Constitution     should   be   different   from   that   under   the   Federal
    Constitution, we reserve the right to apply the standard in a fashion at
    variance with federal cases under the Iowa Constitution. See, e.g., State
    v. Pals, 
    805 N.W.2d 767
    , 771–72 (Iowa 2011); Varnum v. Brien, 
    763 N.W.2d 862
    , 896 n.23 (Iowa 2009); 
    RACI, 675 N.W.2d at 6
    ; State v. Cline,
    
    617 N.W.2d 277
    , 283 (Iowa 2000), overruled in part on other grounds by
    State v. Turner, 
    630 N.W.2d 601
    , 606 n.2 (Iowa 2001); Bierkamp v.
    Rogers, 
    293 N.W.2d 577
    , 579 (Iowa 1980). In this case, NextEra has not
    urged that we apply equal protection principles under the Iowa
    Constitution that depart from established federal principles. Therefore,
    we proceed to consider this case under the established federal equal
    protection principles, recognizing, however, that we may apply them
    differently under the Iowa Constitution.
    Essentially, “[t]he Equal Protection Clause requires that similarly-
    situated persons be treated alike.”          Bowers v. Polk Cnty. Bd. of
    24
    Supervisors, 
    638 N.W.2d 682
    , 689 (Iowa 2002).        Therefore, there is a
    threshold determination in all equal protection challenges as to whether
    persons are similarly situated.    “ ‘If people are not similarly situated,
    their dissimilar treatment does not violate equal protection.’ ”         
    Id. (quoting In
    re Morrow, 
    616 N.W.2d 544
    , 547 (Iowa 2000)).
    Once it is determined persons are similarly situated, we apply one
    of three different levels of scrutiny depending on the type of legislative
    classification under attack. Sherman v. Pella Corp., 
    576 N.W.2d 312
    , 317
    (Iowa 1998). We apply strict scrutiny to “classifications based on race,
    alienage, or national origin and those affecting fundamental rights.”
    
    Varnum, 763 N.W.2d at 880
    .          We apply intermediate scrutiny to
    classifications based on gender, illegitimacy, or sexual orientation. 
    Id. at 880,
    896.     Finally, we apply a rational basis analysis to all other
    classifications. 
    Id. at 879.
    Although the parties disagree as to whether MidAmerican and
    NextEra are similarly situated, they correctly agree that the legislative
    classification at issue is not one requiring any more than rational basis
    scrutiny. Therefore, we will apply a rational basis analysis.
    The rational basis test is a “very deferential standard.” 
    Id. Under this
    lowest level of scrutiny, “[t]he plaintiff has the heavy burden of
    showing the statute unconstitutional and must negate every reasonable
    basis upon which the classification may be sustained.” 
    Bierkamp, 293 N.W.2d at 579
    –80.        A statute satisfies the requirements of equal
    protection as long as
    “there is a plausible policy reason for the classification, the
    legislative facts on which the classification is apparently
    based rationally may have been considered to be true by the
    governmental decisionmaker, and the relationship of the
    classification to its goal is not so attenuated as to render the
    distinction arbitrary or irrational.”
    25
    
    Varnum, 763 N.W.2d at 879
    (quoting 
    RACI, 675 N.W.2d at 7
    ). We have
    stated this test more succinctly as requiring that “ ‘classifications drawn
    in a statute are reasonable in light of its purpose.’ ” 
    RACI, 675 N.W.2d at 7
    (quoting McLaughlin v. Florida, 
    379 U.S. 184
    , 191, 
    85 S. Ct. 283
    , 288,
    
    13 L. Ed. 2d 222
    , 228 (1964)).     “A classification is reasonable if it is
    ‘based upon some apparent difference in situation or circumstances of
    the subjects placed within one class or the other which establishes the
    necessity or propriety of distinction between them.’ ”       
    Morrow, 616 N.W.2d at 548
    (quoting State v. Mann, 
    602 N.W.2d 785
    , 792 (Iowa 1999)).
    Furthermore, “[a] classification ‘does not deny equal protection simply
    because in practice it results in some inequality; practical problems of
    government permit rough accommodations . . . .’ ” 
    Id. The threshold
    determination is whether MidAmerican and NextEra
    are similarly situated. NextEra argues they are similarly situated with
    respect to the application of section 476.53 to a wholesale market
    venture.     We will assume, without deciding, that NextEra and
    MidAmerican are similarly situated because NextEra has failed to prove
    that there is not a rational basis between section 476.53 and a legitimate
    state interest.
    The Board found that even if NextEra and MidAmerican were
    similarly situated, NextEra did not meet its burden of showing that the
    statute is unconstitutional by negating every reasonable basis upon
    which the classification may be sustained. The Board found:
    the General Assembly determined that there were valid
    reasons for the different treatment, including the General
    Assembly’s conclusion that traditional ratemaking provided
    inadequate incentives for rate-regulated utilities to build new
    generation. Ratemaking principles were limited to rate-
    regulated utilities because those are the only companies
    subject to the Board’s rate jurisdiction and therefore the only
    companies that could be reasonably influenced by the
    26
    statute to build generation. Even if the Board wanted to,
    there are no incentives that it could give to NextEra . . . to
    build new generation because the Board has no jurisdiction
    over [its] rates or [return on equity] levels.
    NextEra does not contend these are not legitimate state interests.
    Instead, NextEra attacks the Board’s conclusions. It attacks the Board’s
    first   conclusion   that   the   legislature   concluded   that   “traditional
    ratemaking provided inadequate incentives for rate-regulated utilities to
    build new generation” as ignoring NextEra’s argument that Iowa Code
    section 476.53 is unconstitutional as applied to subsidize a wholesale
    market endeavor.       Second, it attacks the Board’s conclusion that
    “[r]atemaking principles were limited to rate-regulated utilities because
    those are the only companies subject to the Board’s rate jurisdiction” as
    circular reasoning. NextEra essentially seeks to have the court invalidate
    section 476.53 as far as it awards ratemaking principles to public
    utilities that engage in competition in the wholesale market because
    NextEra feels that a public utility exceeds the scope of its role when
    selling energy in the wholesale market.
    NextEra’s contentions are misguided.      The primary purpose of a
    public electric utility is to furnish electricity to the public. The legislative
    intent of section 476.53 is clear that public utilities are to furnish
    electricity in an efficient, reliable manner. Iowa Code §§ 476.1, 476.53.
    This implies a public utility should strive to decrease the cost at which it
    supplies electricity to consumers while at the same time ensuring reliable
    service.    To further this goal, section 476.53 allows rate-regulated
    utilities to receive advance ratemaking principles. The record establishes
    selling energy in the wholesale market allows MidAmerican to reduce
    rates at which its retail customers purchase energy. Furthermore, Wind
    VII allows MidAmerican to meet the needs of its retail customers, which
    27
    include maintaining a diverse fuel supply and acting in compliance with
    environmental regulations. These considerations aid in keeping the price
    of electricity low for MidAmerican’s retail customers.
    As the Office of the Consumer Advocate points out in its brief, the
    general assembly was forced to limit its grant of advance ratemaking
    principles to rate-regulated utilities because they were the only
    companies subject to the State’s ratemaking jurisdiction.          Companies
    that did not provide energy to retail consumers in Iowa, like NextEra,
    were, and still are, completely beyond the State’s ratemaking influence.
    Such a difference is reasonable and consistent with the constitutional
    guarantee of equal protection.      The State cannot influence NextEra to
    provide electric service to Iowa consumers or economic benefits to the
    state. Instead, NextEra is only subject to federal regulation when it sells
    energy in the wholesale market.
    Therefore,   applying   the   rational   basis   test   traditionally   or
    independently in a more rigorous fashion as we did in RACI, compare
    
    RACI, 675 N.W.2d at 16
    (finding a violation of the equal protection clause
    of the Iowa Constitution by applying the federal analytical framework),
    with Fitzgerald v. Racing Ass’n of Cent. Iowa, 
    539 U.S. 103
    , 110, 
    123 S. Ct. 2156
    , 2161, 
    156 L. Ed. 2d 97
    , 105 (2003) (finding no violation of
    the Equal Protection Clause of the Federal Constitution when applying
    the traditional federal analytical framework), NextEra has failed to
    demonstrate a lack of factual basis for the asserted legitimate purposes.
    Thus, the granting of advance ratemaking principles to MidAmerican
    does not violate the guarantee of equal protection under the State or
    Federal Constitution even if it seeks to compete in the wholesale energy
    market.
    28
    VIII. Commerce Clause Claim.
    Next, we must decide if the Commerce Clause of the United States
    Constitution     prohibits    the    Board   from    granting   MidAmerican’s
    application.
    A.   Scope of Review. We review constitutional issues raised in
    agency proceedings regarding the Commerce Clause de novo. KFC Corp.
    v. Iowa Dep’t of Revenue, 
    792 N.W.2d 308
    , 312 (Iowa 2010), cert. denied,
    ___ U.S. ___, ___, 
    132 S. Ct. 97
    , 98, 
    181 L. Ed. 2d 26
    , ___ (2011).
    B.   Analysis.    NextEra asserts the Board’s decision violates the
    Commerce       Clause   of   the    United States    Constitution   because   it
    unlawfully applies section 476.53 as a mechanism that allows ratepayer
    subsidization of MidAmerican’s wholesale market endeavors.                The
    Commerce Clause grants Congress the power “[t]o regulate Commerce
    . . . among the several States.” U.S. Const., art. I, § 8, cl. 3. Although
    the Commerce Clause is an affirmative grant of power to Congress, since
    the nineteenth century the United States Supreme Court has interpreted
    the Clause to have a negative implication.          KFC 
    Corp., 792 N.W.2d at 313
    . This implication, known as the “negative” or “dormant” Commerce
    Clause, “limits the power of the states to erect barriers against interstate
    trade.” Iowa Auto. Dealers Ass’n v. Iowa State Appeal Bd., 
    420 N.W.2d 460
    , 462 (Iowa 1988).
    We have adopted the two-tiered approach of the United States
    Supreme Court to analyze state economic regulation under the
    Commerce Clause. 
    Id. The approach
    is as follows:
    “When a state statute directly regulates or discriminates
    against interstate commerce, or when its effect is to favor in-
    state economic interests over out-of-state interests, we have
    generally struck down the statute without further inquiry.
    When, however, a statute has only indirect effects on
    interstate commerce and regulates evenhandedly, we have
    29
    examined whether the State’s interest is legitimate and
    whether the burden on interstate commerce clearly exceeds
    the local benefits.”
    
    Id. (quoting Brown-Forman
    Distillers Corp. v. N.Y. State Liquor Auth., 
    476 U.S. 573
    , 579, 
    106 S. Ct. 2080
    , 2084, 
    90 L. Ed. 2d 552
    , 559–60 (1986)
    (citations omitted)). “Discrimination” in this context means “differential
    treatment of in-state and out-of-state economic interests that benefits
    the former and burdens the latter.”      Or. Waste Sys., Inc. v. Dep’t of
    Environmental Quality, 
    511 U.S. 93
    , 99, 
    114 S. Ct. 1345
    , 1350, 
    128 L. Ed. 2d 13
    , 21 (1994).      A discriminatory restriction on interstate
    commerce “is virtually per se invalid.”     
    Id. However, if
    we find “the
    statute regulates evenhandedly to effectuate a legitimate local public
    interest,” then “the extent of the burden that will be tolerated depends on
    the nature of the local interest involved, and on whether it could be
    promoted as well with a lesser impact on interstate activities.”      Iowa
    Auto. Dealers 
    Ass’n, 420 N.W.2d at 462
    –63.
    Section 476.53 permits rate-regulated utilities to obtain advance
    ratemaking principles when building new facilities. Section 476.53 does
    not discriminate based on a company’s residency.               Instead, it
    discriminates based on whether a company is a rate-regulated utility.
    NextEra argues the Board’s application of section 476.53 has the
    effect of favoring in-state economic interests because it allows Iowa
    public utilities to get a benefit in the wholesale market that is
    unavailable to entities that do not serve Iowa retail customers.        We
    disagree.
    The Board’s decision to grant advance ratemaking principles to
    MidAmerican does not affect NextEra or favor in-state economic
    interests. The Board’s decision is entirely based on the fact MidAmerican
    is a rate-regulated utility in Iowa.     The impact, or lack thereof, on
    30
    NextEra would be the same if NextEra was located wholly within Iowa or
    completely outside Iowa because NextEra is not a rate-regulated Iowa
    utility.   Similarly, the Board’s decision does not affect the sale of
    NextEra’s products based on whether they are sold in Iowa.
    NextEra contends there are striking similarities between the
    Board’s decision and Alliance for Clean Coal v. Miller, 
    44 F.3d 591
    (7th
    Cir. 1995). NextEra’s reliance on Alliance for Clean Coal is misplaced. In
    Alliance for Clean Coal, coal suppliers from western states sued the
    Illinois Commerce Commission and challenged an Illinois statute that
    encouraged Illinois electric utilities to continue to burn coal mined in
    Illinois despite the availability of cleaner, out-of-state 
    coal. 44 F.3d at 593
    –94.    The Illinois Coal Act encouraged the use of Illinois coal by
    allowing Illinois utilities to pass along the added costs of such coal to
    Illinois ratepayers.   
    Id. This effectively
    made out-of-state coal a more
    expensive option for Illinois utilities.    The Seventh Circuit Court of
    Appeals concluded the statute violated the Commerce Clause because it
    had “the same effect as a ‘tariff or customs duty’ ” placed on out-of-state
    coal that would burden the flow of commerce across state lines. 
    Id. at 595
    (quoting W. Lynn Creamery, Inc. v. Healy, 
    512 U.S. 186
    , 194, 114 S.
    Ct. 2205, 2212, 
    129 L. Ed. 2d 157
    , 167 (1994)).
    NextEra ignores the key difference between the statute at issue in
    Alliance for Clean Coal and section 476.53. The Illinois statute effectively
    discriminated against out-of-state producers by creating a tariff on out-
    of-state coal. This tariff had the effect of “ ‘neutralizing the advantage
    possessed by lower cost out-of-state producers.’ ” 
    Id. Section 476.53
    is
    not a tariff, nor would it treat NextEra or its products differently based
    on whether NextEra was located wholly inside or outside of Iowa.
    31
    Therefore, section 476.53 does not have the effect of favoring Iowa
    economic interests over non-Iowa economic interests.
    However, because it is possible that energy produced by Wind VII
    will end up in the wholesale market, it is possible that the Board’s
    decision to grant ratemaking principles pursuant to section 476.53 will
    indirectly affect interstate commerce. As NextEra correctly points out,
    this burden would be the potential presence of state-subsidized
    electricity in the wholesale market.     It would be in direct competition
    with non-state-subsidized electricity, produced by companies like
    NextEra.   NextEra is also correct that advance ratemaking principles
    allow MidAmerican to shift risk to its retail customers by guaranteeing
    returns on equity even if the demand for electricity and the attached
    price fail to meet MidAmerican’s projections.
    We find the burden on the wholesale market, if any, would be
    minimal. Once completed, Wind VII will be able to produce up to 1001
    megawatts of electricity.     MidAmerican’s director of environmental
    programs, compliance, and permitting testified that “there are over
    130,000 megawatts of electric generation capacity currently in the
    market footprint of the MidWest Independent Transmission System
    Operator, Inc. (MISO).”       MISO is the energy market in which
    MidAmerican competes. The testimony revealed there are an additional
    165,000 megawatts of generating capacity in the footprint of the PJM
    Interconnection, Inc. L.L.C., which operates as a common market with
    MISO.      The   testimony   further   revealed   MISO’s   annual   growth
    requirements far exceeded the size of Wind VII. This means Wind VII, at
    most, would account for 0.76 percent of MISO. If we add the 165,000-
    megawatt capacity of the PJM, then Wind VII only accounts for 0.34
    32
    percent of the market. Therefore, it seems any burden Wind VII might
    have on these large interstate markets would be slight.
    The local benefits of Wind VII, on the other hand, would be
    considerable. As the district court pointed out, “Wind VII would provide
    MidAmerican’s retail customers with a clean, renewable power source
    with no inherent fuel costs, and help insulate its retail customers from
    spikes in fossil fuel costs.”     It is also reasonable to believe that
    MidAmerican’s retail customers will use the electricity produced by Wind
    VII because the wind farm will be located in Iowa.
    Therefore, section 476.53 does not directly regulate or discriminate
    against interstate commerce, and it does not have the effect of favoring
    in-state economic interests over out-of-state economic interests.         Even
    though it may indirectly affect interstate commerce, any burden section
    476.53 places on interstate commerce does not exceed the local benefits.
    IX. Disposition.
    We affirm the judgment of the district court affirming the judgment
    of the Board because in this appeal we find (1) the Board properly
    interpreted   and   applied   section    476.53,   (2)   substantial   evidence
    supported the Board’s findings, (3) section 476.43 is not applicable to
    this ratemaking proceeding, and (4) section 476.53 as applied to a rate-
    regulated public utility that may compete in the wholesale energy market
    does not violate the Equal Protection Clauses of the Iowa or United
    States Constitutions or the Commerce Clause of the United States
    Constitution.
    AFFIRMED.
    All justices concur except Mansfield, J., who concurs specially, and
    Waterman and Zager, JJ., who take no part.
    33
    #10–2080, NextEra Energy Res. LLC v. IUB
    MANSFIELD, Justice (concurring specially).
    I concur in the result only. This proceeding involves an effort by
    MidAmerican Energy to have Iowa’s ratepayers shoulder the costs of a
    new wind energy project even though MidAmerican does not forecast a
    need for additional capacity until 2019.         The majority comments at
    several points on the desirability of the project. Generally speaking, I feel
    less qualified to reach these conclusions but more confident about the
    Iowa Utilities Board’s authority to approve the project.
    I. Deference to the Iowa Utilities Board.
    The first question before us is the deference we are required to give
    to the Board’s interpretations of section 476.53 of the Iowa Code.             I
    believe the majority’s refusal to grant deference is flawed and contrary to
    precedent.
    Historically, we have deferred to the Iowa Utilities Board’s
    interpretation of the complex and technical laws that it administers. In
    doing so, we have relied upon the legislature’s grants of rulemaking
    authority to the Board.      See, e.g., Iowa Code §§ 476.2(1), 476.103(1)
    (2009). Thus, in City of Coralville v. Iowa Utilities Board, we said that the
    Board “has clearly been vested with authority to interpret the ‘rates and
    services’ provision of section 476.1, and we may therefore overturn its
    interpretation only if it is ‘irrational, illogical, or wholly unjustifiable.’ ”
    
    750 N.W.2d 523
    , 527 (Iowa 2008) (quoting Iowa Code § 17A.19(10)(l)); see
    also Evercom Sys., Inc. v. Iowa Utils. Bd., 
    805 N.W.2d 758
    , 762–63 (Iowa
    2011) (stating that the utility board’s interpretation of a provision in
    chapter 476 should only be reversed if it is “irrational, illogical, or wholly
    unjustifiable”); Office of Consumer Advocate v. Iowa Utils. Bd., 
    744 N.W.2d 640
    , 643–44 (Iowa 2008) (same); AT&T Commc’ns of the Midwest,
    34
    Inc. v. Iowa Utils. Bd., 
    687 N.W.2d 554
    , 561 (Iowa 2004) (same); Office of
    Consumer Advocate v. Iowa Utils. Bd., 
    663 N.W.2d 873
    , 876 (Iowa 2003)
    (stating “the board’s interpretation of the applicable statutes is entitled to
    ‘appropriate deference’ ” (citation omitted)).
    True, we held in Renda v. Iowa Civil Rights Commission that a
    grant of rulemaking authority generally does not give an agency
    interpretive authority over a term that “has an independent legal
    definition,” such as “employee.” 
    784 N.W.2d 8
    , 14 (Iowa 2010). But I do
    not believe we overturned our prior decisions requiring deference to IUB
    legal interpretations within the Board’s area of expertise. Certainly we
    did not say in Renda that we were overruling those cases.                To the
    contrary,   in   Renda   we    cited   City   of   Coralville   with   approval,
    acknowledging that the Board had been vested with authority to interpret
    “provisions relating to the regulation of public utility rates and services.”
    
    Id. (citing City
    of 
    Coralville, 750 N.W.2d at 527
    ).
    Furthermore, less than a year ago, and after Renda, we decided
    Evercom Systems. There, the Board had instituted a civil penalty against
    Evercom Systems for “cramming,” a “violation based on improper billing
    for collect telephone calls.” Evercom 
    Sys., 805 N.W.2d at 760
    . We first
    had to determine the appropriate standard of review for the “Board’s
    interpretation of the term ‘unauthorized change in service’ under Iowa
    Code section 476.103, and the Board’s interpretation of the definition of
    ‘cramming’ as that term is defined in Iowa Administrative Code rule
    199—22.23(1).” We explained:
    Section 476.103(3) requires the Board to “adopt rules
    prohibiting an unauthorized change in telecommunication
    service.” While this command from the legislature is not an
    explicit grant of the authority to interpret the term
    “unauthorized change in telecommunications service,” see
    
    Renda, 784 N.W.2d at 13
    , we have held that the rule making
    35
    requirement contained in section 476.103 “evidences a clear
    legislative intent to vest in the Board the interpretation of the
    unauthorized-change-in-service         provisions    in  section
    476.103.” Office of Consumer 
    Advocate, 744 N.W.2d at 643
    .
    The term “unauthorized change in service” is a “substantive
    term within the special expertise of the agency” and,
    therefore, we will only reverse the agency’s interpretation of
    that term if it is irrational, illogical, or wholly unjustifiable.
    
    Renda, 784 N.W.2d at 14
    .
    
    Id. at 762–63.
    Unfortunately, my colleagues in the majority forsake precedent
    without discussing it.         Instead, the majority relies on dictionary
    definitions of “govern” and “exercise” to conclude that section 476.2(1)
    does not grant any interpretive authority to the Board at all. I question
    the majority’s effort to “make a fortress out of the dictionary,” Cabell v.
    Markham, 
    148 F.2d 737
    , 739 (2d Cir. 1945) (Hand, J.), and believe there
    are multiple problems with the majority’s analysis.
    For one thing, the majority does not read section 476.2(1) in its
    entirety. Just before the grant of rulemaking authority is a statement
    that “[t]he board shall have broad general powers to effect the purposes
    of this chapter.” Iowa Code § 476.2(1). If the Board has broad powers, it
    is logical to defer to the Board’s legal interpretations of technical terms,
    as we have done in the past.            The majority also disregards our
    determination in City of Coralville that the Board had “clearly been vested
    with authority” to interpret a term in section 476.1 and therefore its
    interpretation might only be overturned if “irrational, illogical, or wholly
    
    unjustifiable.” 750 N.W.2d at 527
    (citing Iowa Code § 17A.19(10)(l)).
    Although we did not expressly state where that authority came from, it
    could only have come from section 476.2(1).
    Furthermore, even the majority concedes that its dictionary
    definitions do not get it as far as it needs to go. Instead, after quoting
    Webster’s,   the    majority    concludes   that   the   sentence   regarding
    36
    rulemaking in section 476.2(1) is merely “ambiguous” as to the extent of
    the Board’s authority, so it relies on the next sentence that makes the
    Board “subject to the provisions of chapter 17A.”            See Iowa Code
    § 476.2(1). How this justifies the majority’s conclusion is a mystery to
    me.     Obviously, the Board is subject to the provisions of the Iowa
    Administrative Procedure Act. This totally begs the question, however, of
    which provision of the Act—section 17A.19(10)(c) (no deference required)
    or section 17A.19(10)(l) (deference required)—applies here.
    The majority also fails to take into account that the legal
    requirements at issue—the “need” and “consideration of alternatives”
    requirements of section 476.53—are technical matters as to which the
    Board has more expertise than ourselves.          This is not a Renda-type
    situation involving the interpretation of isolated terms that “have
    specialized legal meaning and are widely used in [other] areas of law.”
    
    Renda, 784 N.W.2d at 14
    .        The majority obscures this point by again
    citing Webster’s for dictionary definitions of commonplace nonlegal words
    like “consider,” “other,” “compare,” “feasible,” and “alternatives.” But as
    before, this retreat into the fortress only gets it so far. Because section
    476.53 combines these everyday words with “substantive term[s] within
    the special expertise of the agency,” 
    id., like “sources
    for long-term
    electric supply,” I think we are required to defer to the Board’s
    interpretations of these provisions taken as a whole, as we have done in
    our prior utility cases. Iowa Code § 476.53(3).
    It is true the majority ultimately sustains the Board’s action in this
    case.    However, its refusal to accord any deference to the Board’s
    37
    interpretation of utility law is troubling and, if continued, will have
    adverse implications in future cases. 2
    II. Whether the Project               Is   Needed      and    Other      Feasible
    Alternatives Were Considered.
    The next question is whether the Wind VII project meets the
    requirements of section 476.53(3)(c)(2). As noted by my colleagues, the
    statute requires that the utility have “considered other sources for long-
    term electric supply” and that the facility be “reasonable when compared
    to other feasible alternative sources of supply.” 
    Id. at (3)(c)(2).
    I agree
    with   the    Board    that    this   section    “does    not   specifically    require
    consideration of the ‘capacity need’ or ‘energy need’ . . . for a proposed
    facility.” Yet it is implicit in the foregoing language that there be a need
    for the facility.      At some point it would likely raise legal, if not
    constitutional, problems if a utility built a facility simply to serve
    nonretail customers while incorporating the costs of that facility into its
    retail rate base. Having said that, I believe the Board has permissibly
    interpreted the statute as allowing a broad consideration of the benefits
    of the facility to retail customers to be taken into account in determining
    need. Such benefits may include the allocation of lower-cost energy to
    retail customers, the diversity of energy sources, and the avoidance of
    potential environmental regulations associated with fossil fuels. In light
    of this interpretation, I also believe that substantial evidence supports
    2Notwithstanding my colleagues’ statements about not deferring to the Board’s
    legal interpretation of section 476.53, they may be according more deference than they
    let on. For example, the majority says, “The Board correctly construed section 476.53
    to allow it to consider compliance with future environmental regulations, fuel diversity,
    the volatility of fuel prices, and the supply of less-expensive energy to consumers.”
    (Emphasis added.) I agree that the Board may, but is not required to, consider these
    factors in determining whether advance ratemaking principles are appropriate. I
    support the deferential tone of this statement.
    38
    the Board’s factual finding that “MidAmerican has established the need
    for the facility and its benefits to retail customers.”
    I do not agree with the Board or the majority, however, that
    “promot[ing] economic development” can be cited here as a justification
    for the order granting advance ratemaking principles to Wind VII. The
    Board and my colleagues do not explain how Wind VII promotes
    economic development other than by the fact that MidAmerican will be
    making a capital expenditure.         By this standard, virtually any capital
    expenditure made by a utility (with the costs borne by the utility’s retail
    customers) would meet the “need” requirement of section 476.53(3)(c)(2).
    Notably, neither MidAmerican itself nor the Office of Consumer Advocate
    cites the economic development justification in its briefing.
    Turning to the feasible alternatives issue, the majority appears to
    conclude that section 476.53 imposes a procedural requirement only.
    That is, MidAmerican only has to perform a comparison with other
    energy sources, regardless of what the comparison may show. I disagree.
    The statute not only requires MidAmerican to demonstrate that it “has
    considered other sources for long-term electric supply,” it also requires
    MidAmerican to demonstrate that the facility “is reasonable when
    compared to other feasible alternatives.”          Iowa Code § 476.53(3)(c)(2)
    (emphasis added). The latter is a substantive requirement. Under the
    Board’s interpretation of this part of section 476.53, with which I agree
    and to which I defer, the proposed facility must be a “reasonable option.”
    I believe substantial evidence supports the Board’s finding that it is. 3
    III. Equal Protection.
    The equal protection issues here are quite simple.
    3I
    agree with the majority and the Board that section 476.43 does not apply here
    because MidAmerican has met the statutorily required minimum of 105 megawatts.
    39
    Iowa law permits a regulated utility (MidAmerican) to build a wind
    facility and include the costs of that facility in its rate base even though
    an unregulated utility (NextEra) erecting the same facility would not have
    the same privilege. See 
    id. § 476.53.
    Yet NextEra appears to concede
    that it would not be an equal protection violation if MidAmerican used
    Wind VII only to supply its local retail customers. Rather, NextEra urges
    that it violates equal protection if MidAmerican can also compete in the
    wholesale market with NextEra. In that sense, NextEra is complaining
    about equal treatment—i.e., the fact that both entities may sell wholesale
    power—rather than unequal treatment. Notably absent from NextEra’s
    briefing is any indication that it wishes to become a regulated utility in
    Iowa.
    In any event, MidAmerican has obligations that NextEra does not
    have. MidAmerican must serve customers within its service area, and its
    rates are subject to regulation.    See 
    id. §§ 476.3,
    476.20, 476.22–.26.
    The Board has also indicated that wholesale sales revenue from Wind VII
    will be included in revenue sharing calculations for ratemaking purposes
    through 2013, and thereafter, the Board has reserved the question of
    how the wholesale sales revenue will be treated for ratemaking purposes.
    Thus, even though both entities may compete in the wholesale market,
    the legislature could still rationally conclude that the benefits of being a
    regulated utility are compensated by the drawbacks. Functionally, the
    constitutional question here is similar to what it was in City of Coralville.
    In that case, the argument was made that some Coralville residents
    would receive the benefits of MidAmerican’s undergrounding of power
    lines   without   bearing   the   costs    because   they   were   not   within
    MidAmerican’s service area. City of 
    Coralville, 750 N.W.2d at 530
    . That
    was alleged to be an equal protection violation. Without much difficulty,
    40
    we concluded it was not.      See 
    id. at 530–31.
         This case presents an
    arguably similar situation in that wholesale customers of Wind VII may
    receive the benefits of the project without having to bear its capital costs
    in their rate base.
    My    colleagues   conclude   that   granting    advance   ratemaking
    principles for Wind VII will “aid in keeping the price of electricity low for
    MidAmerican’s retail customers.”      I do not think it is necessary or
    appropriate for us to draw this conclusion. I am not an economist, an
    expert on finance, or a regulator of utilities. But I am confident that a
    rational basis exists for the legislature’s determination that MidAmerican
    can receive advance ratemaking principles for this project even though
    some of the power will be sold on the wholesale market.          See King v.
    State, __ N.W.2d __, (Iowa 2012) (applying the rational basis test).
    IV. Commerce Clause.
    The majority’s Commerce Clause discussion is unduly complicated
    and, in part, incorrect. We do follow the United States Supreme Court’s
    two-tiered approach to Commerce Clause cases:
    When a state statute directly regulates or
    discriminates against interstate commerce, or when its effect
    is to favor in-state economic interests over out-of-state
    interests, we have generally struck down the statute without
    further inquiry. When, however, a statute has only indirect
    effects on interstate commerce and regulates evenhandedly,
    we have examined whether the State’s interest is legitimate
    and whether the burden on interstate commerce clearly
    exceeds the local benefits.
    Iowa Auto. Dealers Ass’n v. Iowa State Appeal Bd., 
    420 N.W.2d 460
    , 462
    (Iowa 1988) (quoting Brown-Forman Distillers Corp. v. N.Y. State Liquor
    Auth., 
    476 U.S. 573
    , 579, 
    106 S. Ct. 2080
    , 2084, 
    90 L. Ed. 2d 552
    , 559
    (1986)).
    41
    Section 476.53 passes the first threshold because it does not
    discriminate against out-of-state interests.   MidAmerican and NextEra
    are treated differently not because one is an in-state company and the
    other is not (indeed, MidAmerican’s ultimate parent is based in Omaha),
    but because one is a regulated utility and the other is not. So far, I agree
    with the majority.
    However, I believe the majority misapplies the second tier of the
    analysis, which asks whether the statute unduly burdens interstate
    commerce. The majority concludes that MidAmerican’s interstate sales
    of power generated by Wind VII would be a “burden” on interstate
    commerce but only a “slight” one, outweighed by the “considerable
    benefits” to local consumers from Wind VII.
    Again, given my lack of expertise, I hesitate to predict that Wind VII
    will be a boon for Iowans served by MidAmerican. But I think we need
    not reach that question because the majority’s premise is mistaken. How
    are increased sales in interstate commerce a “burden” on interstate
    commerce at all?
    V. Conclusion.
    For the foregoing reasons, I concur in the result only.
    

Document Info

Docket Number: 10–2080

Citation Numbers: 815 N.W.2d 30

Filed Date: 6/8/2012

Precedential Status: Precedential

Modified Date: 1/12/2023

Authorities (31)

Cabell v. Markham , 148 F.2d 737 ( 1945 )

Alliance for Clean Coal, a Virginia Not-For-Profit ... , 44 F.3d 591 ( 1995 )

Renda v. Iowa Civil Rights Commission , 784 N.W.2d 8 ( 2010 )

Doe v. Iowa Department of Human Services , 786 N.W.2d 853 ( 2010 )

Chicago and Northwestern Railway Co. v. Fachman , 255 Iowa 989 ( 1963 )

Barnett v. Durant Community School District , 249 N.W.2d 626 ( 1977 )

Bowers v. Polk County Board of Supervisors , 638 N.W.2d 682 ( 2002 )

Sherman v. Pella Corp. , 576 N.W.2d 312 ( 1998 )

Racing Ass'n of Central Iowa v. Fitzgerald , 675 N.W.2d 1 ( 2004 )

In Re Morrow , 616 N.W.2d 544 ( 2000 )

Orr v. Lewis Cent. Sch. Dist. , 298 N.W.2d 256 ( 1980 )

Bierkamp v. Rogers , 293 N.W.2d 577 ( 1980 )

State v. Stone , 764 N.W.2d 545 ( 2009 )

State v. Cline , 617 N.W.2d 277 ( 2000 )

Auen v. Alcoholic Beverages Division of Iowa Department of ... , 679 N.W.2d 586 ( 2004 )

Iowa Auto Dealers v. State Appeal Bd. , 420 N.W.2d 460 ( 1988 )

At&T Communications of the Midwest, Inc. v. Iowa Utilities ... , 687 N.W.2d 554 ( 2004 )

State v. McCoy , 618 N.W.2d 324 ( 2000 )

Office of Consumer Advocate v. Iowa Utilities Board , 744 N.W.2d 640 ( 2008 )

ABC Disposal Systems, Inc. v. Department of Natural ... , 681 N.W.2d 596 ( 2004 )

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