Wind and Solar Leasing in O'Brien County, Iowa

An early adopter: wind ordinances since 2003, two large projects since

O'Brien County developed its own wind-siting ordinance in 2003, well ahead of many Iowa counties, specifically to encourage early developer investment. That framework, since codified and amended as County Ordinance No. 22, underlies two large commercial wind projects now operating in the county. MidAmerican Energy's Highland Wind Farm, completed in December 2015, is the state's largest individual wind farm by turbine count: 214 turbines with a combined 502 MW nameplate capacity, requiring more than 300 landowner easements to site. The amount of individual lease payments is confidential between MidAmerican and participating landowners, but public reporting describes them as exceeding what the same acreage would earn in crop income -- while each turbine and its access road together occupy less than half an acre of the host farm.

The second project, the roughly 250 MW O'Brien Wind Energy Project (also referred to as Wind X), covers 104 turbine sites across 50,000 acres in northern O'Brien County. Public project figures put its landowner-payment and tax-revenue impact at more than $115 million in landowner payments and more than $160 million in property tax revenue over 30 years, spanning both O'Brien and neighboring Ida counties. Together, the two projects give O'Brien County roughly 750 MW of installed wind capacity -- among the more concentrated build-outs in the state -- and produced a reported $6,321,668 in combined property tax revenue for 2025 alone, according to the county auditor's office.

2025's ordinance amendment: what changes when a turbine is repowered

In 2025, the Board of Supervisors unanimously adopted a second amendment to County Ordinance No. 22, adding a dedicated section (Section 11) specifically addressing Wind Energy Device Repowering -- the replacement, refurbishment, or modernization of existing turbines and their accessory buildings and structures. The amendment changes the setback that applies when an existing turbine is repowered: rather than requiring the original 120%-of-total-height setback from any public street, right-of-way, or overhead utility line, a repowered device may sit as close as 105% of its total height from those features, a roughly 15% reduction. The stated purpose of setbacks generally is to manage noise and safety; the county's own framing for allowing this reduction on repowering (rather than new construction) is that repowered turbines are replacing infrastructure already in place, not introducing a new siting question from scratch.

This amendment is directly tied to a specific, near-term event: MidAmerican's repowering of the Highland Wind Farm is expected to begin around April 2026, and one advantage of repowering (over an entirely new build) is that existing cement foundations, tower structures, underground power-gathering cables, access roads, and the power-gathering substation can all be reused rather than rebuilt. If you're evaluating a parcel near an existing Highland Wind Farm turbine, ask directly whether that specific turbine is scheduled for repowering, since the applicable setback -- and possibly the turbine's height and blade length -- may change as a result.

Decommissioning: the county has a specific, negotiated agreement

O'Brien County's Board of Supervisors has reached a specific decommissioning agreement with MidAmerican Energy covering the Highland and O'Brien wind farms, under which MidAmerican is required to notify the county if a turbine has sat idle (non-operational) for 12 months. That notification requirement is a concrete trigger a landowner or nearby property owner can ask the county about directly -- it's not a vague future promise, but a specific, time-bound obligation the county negotiated. If you're buying near an existing turbine, ask the county whether any notifications under this agreement have been made for turbines near the parcel in question, and separately ask about the decommissioning-cost or bonding arrangement that would apply if a turbine is permanently retired rather than repowered.

What to verify before relying on lease income or buying near a turbine site

1. Confirm with O'Brien County (starting with the Auditor's office, since no separate zoning department was confirmed -- see the county hub) whether a specific parcel sits inside the Highland Wind Farm or O'Brien Wind Energy Project footprint, and whether any turbine, access-road, or transmission easement crosses it.
2. Pull any recorded wind easement or lease document for a specific parcel from the O'Brien County Recorder -- this, not the ordinance alone, sets the actual payment, access, noise, and decommissioning terms of a specific deal, and lease payment amounts are confidential and not publicly disclosed.
3. If the parcel is near an existing Highland Wind Farm turbine, ask MidAmerican Energy and the county whether that specific turbine is scheduled for repowering under the 2025 ordinance amendment, since the applicable setback and turbine specifications may change.
4. Ask the county whether any 12-month idle-turbine notifications have been made under the county's decommissioning agreement with MidAmerican for turbines near the parcel.
5. Have an attorney experienced in Iowa wind-easement law review any lease or easement document before signing, and ask the County Assessor how an existing turbine or easement has affected assessed values on comparable nearby parcels.