Low-Impact Pumped Storage
We specialize in developing closed-loop pumped storage hydropower projects, a low-impact technology that minimizes water use and environmental impact while adding much-needed storage capacity to the grid to accommodate intermittent power generation resources such as solar and wind. These facilities consist of two man-made reservoirs – a lower one and an elevated one. The reservoirs are filled with water once and the water flows between the reservoirs, continually storing and dispatching power at a moment’s notice.
Lewis Ridge
Pumped Storage
The Lewis Ridge Pumped Storage Project will convert former mine land in Bell County, Kentucky into a reliable energy storage facility. The closed-loop, 287-megawatt (MW) pumped storage hydropower facility will have the capacity to store electricity for up to eight hours and generate electricity to power 67,000 homes. This project leverages existing transmission infrastructure and builds upon the region’s energy-producing legacy and skilled workforce to power Kentucky for generations to come.
View Project WebsiteSwan Lake
Pumped Storage
The Swan Lake Pumped Storage Project near Klamath Falls, Oregon, is a closed-loop pumped storage facility that would store energy for up to 9.5 hours and release that energy to generate 400 megawatts (MW) of on-demand power. The $1 billion+ project (owned by Copenhagen Infrastructure Partners) leverages its proximity to critical north-south electric transmission access and a skilled labor force to help Oregon meet its clean energy goals.
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Goldendale
Pumped Storage
The Goldendale Pumped Storage Project, located on the Oregon-Washington border, is a closed-loop pumped storage facility strategically located near existing energy transmission and generation facilities. It would store the region’s excess wind and solar energy for up to 12 hours, and then release that energy to generate 1,200 MW of on-demand power. Owned by Copenhagen Infrastructure Partners, this $2 billion+ project will create thousands of jobs and revitalize a former industrial site.
View Project WebsitePennsylvania & West Virginia
Run-of-River
Southwestern Pennsylvania is uniquely positioned to play a critical role in the clean energy transition by leveraging its historic infrastructure and harnessing the power of its abundant waterways to lead in the development of low-impact, renewable hydropower. Rye is pioneering a new type of renewable energy agreement that supports 24/7/365 carbon-free power for Iron Mountain Data Centers, a world leading data center operator. Go here to learn more.
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Run-of-River Projects
Dig Deeper
All non-federal pumped storage hydropower projects built in the U.S. must obtain a license from the Federal Energy Regulatory Commission. Learn more about our projects by reviewing our license application materials, which include detailed feasibility studies, economic analysis and more.