Project

A CORNERSTONE OF THE CLEAN ENERGY ECONOMY

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Project Description

The Goldendale Energy Storage Project is an early-stage development strategically located on the Oregon-Washington border. The project is positioned at the top of the Pacific AC and DC Interties that connect the Pacific Northwest's power grid. The $2 Billion+ project is a closed-loop pumped-storage hydropower facility with an upper and lower reservoir located about eight miles southeast of Goldendale, Washington. It will generate 1,200 megawatts of clean electricity while also storing the region’s abundant wind and solar electricity to use when it is needed. Once operational, the project will avoid/save the equivalent of 1,785,190 tons of CO2 emissions each year. Developed by Rye Development and owned by Copenhagen Infrastructure Partners, the project will create more than 3,000 family wage jobs during its four-year construction period, and another 50 to 70 much-needed permanent jobs.

Rendering of the Goldendale Energy Storage Project

Public Support

Broad support for clean energy investments in the region

Located within the Columbia Gorge Bi-State Renewable Energy Zone, it's an important project for the region. The Goldendale Energy Storage Project is the number one Washington priority project in Mid-Columbia Economic Development District's Economic Development Strategy. The project is a result of more than two decades of work by community and private partners. It has widespread support for its potential to create thousands of jobs, generate millions in annual tax revenue, and support regional energy and climate goals. A recent survey found that 72% of people in the region were in favor of pumped storage hydro projects.

Project Timeline

Technical Details

The proposed project will consist of a closed-loop pumped-storage hydropower facility with an upper and lower reservoir with over 2,400 feet of maximum gross head. It will utilize variable-speed, pump-turbine generator units and provide balancing services and renewable energy flexible capacity to utilities in the region. The proposed project will consist of the following new facilities:

  • Upper reservoir ungated vertical intake structure with a hood to prevent vortex formation
  • Lower reservoir horizontal intake structure, including vertical steel slide gates to allow isolation of tailrace tunnel from lower reservoir
  • An upper reservoir consisting of a concrete rockfill embankment dam approximately 175 feet high, 8,000 feet long, a surface area of about 61 acres.
  • A lower reservoir consisting of a concrete rockfill embankment dam approximately 205 feet high, 6,100 feet long, a surface area of about 63 acres.
  • Project capable of generating upwards of 1,200 MW with 25,506 MWh of storage (12-20 hours of storage)
  • Water conveyance system and penstocks.
  • An underground water conveyance tunnel, underground powerhouse cavern, and underground transformer gallery cavern containing 18 115-kilovolt (kV) intermediate step-up transformers.
  • 115 and 500 kV transmission line(s).
  • A substation/switchyard and other appurtenant facilities.
  • Aerial transmission line and interconnection to BPA’s John Day Substation.

A safe, equitable, and environmentally sound way to store and integrate carbon free sources of electricity. Supporting Washington's efforts to meet its clean energy goals.