990 N.W.2d 282
Iowa2023Background
- Story County Wind, LLC (SCW) owns wind plants placed in service in 2008 and first assessed in 2009 under Iowa Code § 427B.26’s graduated valuation schedule (0% first year, +5% each year, 30% in year seven and after).
- In 2019 SCW undertook a "repowering" project replacing blades, generators, gearboxes, hubs, pitch systems, shafts, and oil coolers but did not add towers or replace foundations; assessor maintained prior valuations.
- In 2021 SCW protested, seeking to remove original costs of replaced parts, add costs of new parts, and restart the § 427B.26 phased assessment schedule for the new components.
- The Story County Board of Review denied relief; the district court granted summary judgment for the Board and dismissed SCW’s appeal.
- The Iowa Supreme Court reviewed whether § 427B.26 requires separate assessment schedules or reset tax ages for replaced components (repowerings) and affirmed the district court.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Whether a repowering (component replacement) requires a new assessment schedule for replaced parts under § 427B.26 | Repowered components are "acquired cost" and should be placed on a new phased-in schedule (with a new first assessment year at 0%) | § 427B.26 values the "entire wind plant" by its tax age and net acquisition cost; part replacements do not create a new schedule | Held: No. Repowering does not trigger a new assessment schedule; valuation follows the plant’s overall tax age and original net acquisition cost |
| Whether "wind energy conversion property" or "net acquisition cost" can be read to treat replaced parts separately | "Net acquisition cost" encompasses costs of replacement components and thus supports separate treatment | Statute defines property as "the entire wind plant" and "net acquisition cost" as the acquired cost of that property (historical cost of the whole plant) | Held: The statute ties valuation to the entire plant and its historical acquisition cost; replacements don’t alter net acquisition cost for assessment purposes |
| Whether the statute is ambiguous as to repowerings (warranting canons or deference) | Silence on repowering creates ambiguity permitting ambiguity-resolving rules favoring taxpayer | Statute’s text and definitions yield a single reasonable meaning; silence does not equal ambiguity | Held: Not ambiguous; courts need not apply tax-construction canons or defer to administrative guidance |
| Whether administrative guidance could alter statutory meaning | SCW relied on some Department of Revenue guidance suggesting different treatment for repowerings | § 427B.26 contains no delegation to the director; statutory text controls | Held: Administrative guidance does not change the unambiguous statutory meaning; later statutory amendments merely clarify the same rule |
Key Cases Cited
- Dolphin Residential Coop., Inc. v. Iowa City Bd. of Rev., 863 N.W.2d 644 (Iowa 2015) (standard of review and summary judgment in board of review appeals)
- Carolan v. Hill, 553 N.W.2d 882 (Iowa 1996) (statutory interpretation begins with the legislature's words)
- Com. Bank v. McGowen, 956 N.W.2d 128 (Iowa 2021) (courts determine the fair and ordinary meaning of statutory words)
- Est. of Butterfield v. Chautauqua Guest Home, Inc., 987 N.W.2d 834 (Iowa 2023) (a statute is not ambiguous merely because parties disagree)
- State v. Iowa Dist. Ct., 889 N.W.2d 467 (Iowa 2017) (ambiguity exists only if text supports multiple reasonable interpretations)
- Renda v. Iowa C.R. Comm’n, 784 N.W.2d 8 (Iowa 2010) (principles for determining legislative delegation of interpretive authority to agencies)
- Iowa Auto Dealers Ass’n v. Iowa Dep’t of Revenue, 301 N.W.2d 760 (Iowa 1981) (tax statutes construed liberally in favor of the taxpayer)
- Dial Corp. v. Iowa Dep’t of Revenue & Fin., 634 N.W.2d 643 (Iowa 2001) (tax exemption statutes construed strictly in favor of taxation)