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Our Transmission Programmatic Environmental Impact Statement tool is live!
We've created an interactive tool to help you explore the Transmission Programmatic EIS. Try it out - link opens an external site.
Learn more about the Transmission Programmatic EIS here.
See what's happening at each stage of our review for this facility. You can choose a current or past stage to learn more about it.
You can find and filter facilities by name, location, energy type and stage in the siting process.
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See what's happening at each stage of our review for this facility. You can choose a current or past stage to learn more about it.
Badger Mountain Solar is a proposed 200-megawatt (MW) solar photovoltaic (PV) generation facility with an optional 200-MW battery energy storage system (BESS). The proposed site is located approximately 3.5 miles east of the East Wenatchee city and south of Badger Mountain Road.
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Carriger Solar is a proposed solar photovoltaic (PV) electric generating facility with a capacity of 160 megawatts (MW) of alternating current (AC) solar energy and 63 MW of battery energy storage. The proposed site is located approximately two miles northwest of Goldendale.
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Cascade Renewable Transmission is a proposed 400-kilovolt (kV) high-voltage direct current (HVDC) electric transmission facility spanning about 100 miles between the BPA Big Eddy substation near The Dalles, Oregon, and the PGE Harborton substation in Portland, Oregon. The project would be built primarily within the Columbia River bed in both Oregon and Washington, with approximately 40 miles in Washington and 58 miles in Oregon, including about 7.6 miles of underground cable in Skamania County to bypass the Bonneville Locks and Dam.
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Chehalis Generation Facility is a natural gas-fired combined-cycle electric generation facility. The 30-acre project site is located south of Chehalis.
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The Columbia Generating Station (CGS), formerly known as WNP-2, is an operating nuclear electric generating station located near Richland. The project is sited on land leased from the U.S. Department of Energy (DOE) on the Hanford Site. The facility has a net design electrical rating of 1,236 megawatts and the entire output of the plant is dispatched to the Bonneville Power Administration (BPA). The total area of the project is 1,089 acres.
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Columbia Solar consists of three separate solar arrays located on individual sites totaling approximately 140 acres. The sites are located southeast of Ellensburg. The project is capable of producing approximately 15 megawatts of energy.
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Desert Claim was proposed as a wind farm located northwest of Ellensburg. The project was approved to consist of up to 31 turbines producing up to 100 megawatts (MW). It was pending construction until we received a request to terminate the Site Certification Agreement in May 2025. Our Council approved the termination request in June 2025.
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Goldeneye is a proposed stand-alone 200-megawatt (MW)/800-megawatt hour (MWh) Battery Energy Storage System (BESS). The proposed site is east of Sedro-Woolley. The proposed facility will provide a service to the regional electric grid by receiving energy (charging) from the Puget Sound Energy (PSE) electric transmission system, storing energy on site, and then later delivering energy (discharging) back to the point of interconnection.
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Goose Prairie is a solar facility located near Moxee. The project has the potential to generate approximately 80 megawatts of electricity with an optional battery storage system.
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Grays Harbor Energy Center consists of two gas combustion turbine generators on a "two on one" configuration with a single steam turbine generator. The project produces an output ranging between approximately 530 megawatts and 650 megawatts. The project is located on a 20-acre site within the Satsop Redevelopment Park.
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High Top Solar, part of a combined project with Ostrea Solar, consists of two separate solar arrays located on adjacent parcels of land north of Sunnyside. Each array will have a capacity to generate up to 80 megawatts of electricity.
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Hop Hill Solar project proposes a 500 megawatt (MW) solar generation facility coupled with a battery energy storage system (BESS) of up to 500 MW. The proposed solar array is located approximately 11 miles north of Prosser.
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The Horse Heaven Wind project is a combined wind, solar, and battery energy storage system (BESS) to be located approximately four miles southwest of Kennewick. The project's lease boundary encompasses approximately 72,000 acres and would include up to 222 wind turbines.
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Kittitas Valley Wind is a 48-turbine wind power project located on approximately 5,400 acres northwest of Ellensburg.
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Ostrea Solar, a project applied for with High Top Solar project, is one part of two separate solar arrays with battery storage located on adjacent parcels of land 22 miles east of Moxee in Yakima County. Each array associated with the two projects will have the capacity of producing up to 80 megawatts of electricity, with a combined ability to power approximately 30,000 homes.
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Wallula Gap Solar is a proposed 60-megawatt solar project with an optional battery energy storage system (BESS) located approximately 4 miles northwest of the unincorporated community of Plymouth.
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Wautoma Solar is a solar project with a battery energy storage system (BESS) to be located on approximately 5,800 acres of land 12.5 miles northeast of Sunnyside. The project will have a capacity of approximately 470 megawatts of power generation.
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Wild Horse Wind Power project is located on approximately 9,500 acres of land 10 miles east of the town of Kittitas. The project consists of 149 turbines with a maximum capacity of 273 megawatts.
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Washington Nuclear Power (WNP) projects 1 and 4 are partially completed nuclear projects located on approximately 972 acres of the Hanford Site about 1.5 east of the Columbia Generating Station.
