Oregon electric utility regulators have issued a site certificate for Caithness Energy’s Saddle Butte facility of up to 399MW, among the largest wind projects under development in a US coastal state.

The Oregon Energy Facility Siting Council’s approval calls for project construction to begin by 17 November 2019, with completion within three years.

The facility will be located in north-central Oregon, about 20 miles south of the Columbia River.