A Washington commission will send a recommendation to Gov. Jay Inslee this week on the proposed Horse Heaven Hills wind turbine farm that would leave intact more than three-quarters of the originally requested number of turbines.
The proposed turbine farm has drawn scrutiny for its possible impact on Native cultural sites and on wildlife in the area, as well as its visibility from the Tri-Cities.
With scant discussion, the Energy Facility Site Evaluation Council approved the recommendation 4-3 Friday.
Scout Clean Energy of Boulder, Colorado, originally made plans for two scenarios, calling for a maximum of 147 670-foot-tall wind turbines or 222 500-foot turbines along a 24-mile east/west stretch of the Horse Heaven Hills just south of Kennewick. However, the Evaluation Council decided in February to implement two-mile buffer zones around 60 to 70 ferruginous hawk nests in that area and remove turbines along the north slopes of the hills.
The company says those buffer zones cut Scout Clean Energy’s number of turbines by roughly half. At that time, the company said those changes would trim the projected 1,150 megawatts of wind power to 236 megawatts.
Inslee sent the February recommendations back to the Council, wanting to increase the number of turbines back to the original estimates. In recent months, the Council has discussed trimming some ferruginous hawk buffer zones to 0.6 mile around the nests. In 2021, the Washington Fish & Wildlife Commission changed the status of ferruginous hawks from threatened to endangered.
The recommendations approved Friday call for a 0.6 mile buffer around the nests, plus a 0.25-mile buffer around historic Native American fire sites, plus a one-mile buffer alongside Webber Canyon, another culturally sensitive spot for Indigenous nations.
If 500-foot turbines are installed, that would trim the number of turbines by approximately 50, from 222 to roughly 172. If 670-foot turbines are installed, that would cut the number of turbines by approximately 34, from 147 to roughly 113. More precise figures will be calculated later.
Scout Clean Energy’s original proposal also included two 500-megawatt solar panel farms on the east and west sides of the 24-mile stretch. The Council ordered that the eastern solar farm be removed because of its proximity to sensitive Native cultural sites.
The wind farm has drawn strong opposition from numerous Tri-Citians because the original plan for the turbines would also disrupt a currently pristine view of the hills from the urban area. This Horse Heaven Hills matter has become the most contentious disagreement among several in Washington between wind and solar farms on one side and wildlife preservation on the other.