Background
Worthwhile Wind LLC, an affiliate of Chicago-based Invenergy LLC, began planning a large-scale commercial wind energy conversion system (C-WECS) in Worth County, Iowa in 2018. The project envisioned up to fifty-five turbines across roughly 100 parcels, capable of generating 165 megawatts. Because this was a “development-transfer” project, Worthwhile intended to complete the permitting and approvals phase and then sell the project to a third party for construction and operation. Between 2018 and early 2021, the company executed wind leases with more than 100 landowners, commissioned environmental and engineering studies, filed an interconnection application with MISO, posted approximately $3.8 million in interconnection security deposits, erected two meteorological towers, and excavated two preliminary seal slabs. It claimed total pre-moratorium expenditures of roughly $2.8 million. At no point did Worthwhile apply for or obtain any county permit to construct or operate wind turbines.
Public sentiment in Worth County shifted following complaints about the nearby Freeborn Wind Farm, and voters elected two new supervisors. In April 2021 the Board of Supervisors adopted a temporary moratorium on C-WECS development. After more than a year of unsuccessful negotiations with Worthwhile over a development agreement, the Board enacted Ordinance 2022.06.27 in June 2022, imposing setback distances, a 500-foot turbine height cap, noise restrictions, and a zero-shadow-flicker standard at occupied buildings.
Worthwhile did not attempt to redesign the project to comply with the new ordinance and did not seek waivers. Instead it filed a declaratory judgment action in Worth County District Court, asserting (1) vested rights to complete the project under pre-moratorium law, and (2) that the county enacted the ordinance in bad faith. The district court agreed on both counts and ordered that Worthwhile could proceed under the prior regulatory regime. The county appealed.
The Court’s Holding
The Iowa Supreme Court unanimously reversed (Justice McDermott dissented separately). On the vested rights claim, the court reaffirmed Iowa’s majority-rule approach: development rights vest only upon the issuance of a valid permit or formal governmental approval of a plat. Because Worthwhile never applied for or received any permit to construct wind turbines—the sole MET-tower permit it held being categorically distinct from the project itself—its expenditures, however substantial, could not vest a right to build. The court rejected the argument that requiring a permit produces an absurd result in previously unzoned areas, reasoning that a developer who invests in an unzoned area does so knowing that local government retains full legislative power to adopt zoning regulations. The magnitude of expenditure is not a sliding scale and cannot substitute for the threshold permit requirement.
On the bad faith claim, the court held that Worthwhile failed to carry its burden of showing both illegality and improper purpose—the two elements Iowa law requires. The challenged ordinance imposed standard police-power regulations (setbacks, height limits, noise, and shadow flicker standards) supported by over a thousand pages of review material, and Worthwhile offered no evidence that those provisions lacked a rational basis. On improper purpose, the court acknowledged the moratorium’s suggestive language referencing “a wind energy company,” but emphasized that the relevant inquiry is the purpose behind the final legislative act—the June 2022 ordinance—not the moratorium. More than a year of good-faith negotiations separated the two, attenuating any inference of targeted malice. The court also found that Worthwhile’s 98.2% buildable-acreage reduction calculation assumed maximum-height turbines and ignored shorter commercially available models and the ordinance’s waiver mechanism.
The court further clarified that the bad faith doctrine, as traditionally applied, addresses interference with an established administrative-executive process—delaying a pending application or revoking a conforming permit. Because Worthwhile never filed a permit application, there was no process to subvert. The county’s decision to create a regulatory framework upon learning of a proposed large-scale wind development was, the court held, a paradigmatic exercise of the police power.
Key Takeaways
- Iowa follows the majority rule: vested rights in zoning arise only from a validly issued permit or formal approval of a plat—substantial private expenditures alone, even millions of dollars, are insufficient.
- A developer who invests in an unzoned area takes the risk that the local government will later enact zoning regulations; the absence of a prior permitting framework does not excuse the failure to obtain one.
- The bad faith doctrine applies to interference with established administrative processes (pending applications, conforming permits); it does not prevent a county from creating an entirely new regulatory framework for an activity that was previously unregulated.
- Proving bad faith requires both illegality and improper purpose; awareness of a specific developer’s plans and temporal proximity between a project’s announcement and a moratorium, standing alone, are insufficient to overcome the strong presumption of validity that attaches to legislative zoning decisions.
- For development-transfer projects especially, securing formal governmental approval early is essential to protect against intervening zoning changes.
Why It Matters
This decision has significant implications for renewable energy developers operating in jurisdictions without preexisting permitting frameworks. The court expressly held that no amount of pre-permit investment—studies, leases, grid-interconnection deposits, or preliminary construction—can crystallize a vested right to build in an unzoned area. Developers who bypass or cannot access a formal permitting process before investing substantial sums do so at their own legislative risk. The ruling also serves as a practical guide for counties seeking to regulate emerging energy technologies: adopting a moratorium to study the issue, engaging in good-faith negotiations, and then enacting a substantively grounded ordinance will generally withstand a bad faith challenge even when the regulation effectively displaces a specific project.
The decision arrives as wind development continues to expand across rural Iowa and other Midwestern states, many of which have partially zoned or entirely unzoned counties. By firmly applying the permit-first rule and rejecting equitable theories based on investment magnitude alone, the Iowa Supreme Court signals that local governments retain broad latitude to regulate—or prohibit—commercial wind development, and that developers who want legal certainty must engage the governmental permitting apparatus before committing capital at scale.