Who decides the Horse Heaven Hills: Washington's energy siting council

How a project leaves county hands

Washington law lets a developer of a large energy facility apply to EFSEC instead of going through the local city or county. The Council (a panel that includes state agency representatives and a member from the host county) runs an adjudicative hearing, which is a trial-like process with sworn testimony and cross-examination, then writes a recommendation. The governor can approve it, reject it, or send it back for more work.

For Horse Heaven, that meant the real venue was a hearing room, not the Benton County courthouse. The county, the Yakama Nation, nearby residents, and conservation groups all took part as parties, but the ruling ran through Olympia. Anyone unhappy with the final decision appeals not to a local court but, by statute, to the Washington Supreme Court, which keeps the whole dispute on a state track.

The honest math on the setbacks

The hardest fight was about distance. The ferruginous hawk is listed as endangered in Washington, and its nests sit in exactly the open shrub-steppe the project would cover. At one point the Council proposed keeping turbines roughly two miles from active nests, a buffer Scout said would remove a large share of the turbines and could make the project uneconomic.

CETA, the Clean Energy Transformation Act of 2019, is why this tension lands on the Council at all: the law pushes Washington utilities toward 100 percent clean electricity by 2045, yet a clean project still has to clear habitat and cultural-site rules. At last public report the governor approved a site certification but sent the hawk buffers back for another look, and the strictest version was eased. The exact turbine count that survives is the kind of number that has moved before, so treat any single figure you see with caution.

Who is at the table

Scout Clean Energy, the Colorado-based developer now owned by Brookfield, wants the largest project it can finance. The Yakama Nation has pressed hard on cultural and treaty concerns across the ridge, which it considers part of its ancestral landscape. The Washington Department of Fish and Wildlife speaks for the hawk and other species, and Benton County and a local group often called Tri-City CARES have argued the viewshed and property values were brushed aside.

Refereeing all of this is the governor, and the chair has changed hands. Jay Inslee, who signed CETA, handled the first decision; Bob Ferguson took office in early 2025, so the follow-through, including any reconsidered conditions and the response to appeals, lands partly on a new administration. That matters because approved is not the same as built: permits, financing, and court challenges all stand between the certification and the first turbine.

Worth watching this month

1. Watch EFSEC's project page for any updated site certification agreement or amended conditions, which is where turbine counts and setbacks actually get written down.

2. Watch for appeals filed with the Washington Supreme Court, since that is the only court that hears challenges to a Council decision, and whether it agrees to review is the real signal.

3. Watch the Yakama Nation's public statements and any government-to-government consultation notices, which are routine but can reshape where turbines are allowed.

4. Watch Bonneville Power Administration's interconnection and transmission queue updates, a slow and technical process that decides when, not just whether, the power can flow.

5. Watch for Scout's own construction schedule, remembering that developer timelines slip often and should be read as hopes, not commitments.