Overview
Dominion Bath County Pumped Storage is an operational pumped hydro storage facility in Virginia, United States. It is one of the largest pumped storage plants in the world, providing grid-scale energy storage and reliability services.
Dominion Bath County Pumped Storage is a major pumped hydro storage facility located in Bath County, Virginia, United States. Operated by Dominion Energy, it is one of the largest pumped storage plants globally, with a capacity of over 3,000 MW. The facility uses two reservoirs at different elevations to store and generate electricity, supporting grid stability and peak demand. The plant operates under U.S. regulatory frameworks including FERC oversight and NFPA 855 safety guidelines for energy storage systems. Pumped hydro storage is a mature technology with high round-trip efficiency and long operational life. The facility's scale places it in the large-scale category for energy storage, typical for pumped hydro projects in the United States. Environmentally, the facility provides critical grid services such as peak shaving and frequency regulation, reducing reliance on fossil fuel peaker plants. The site's location in a rural, mountainous area minimizes population density risks, though water management and ecological impacts are managed through regulatory permits. The plant contributes to renewable energy integration by storing excess generation from wind and solar sources.
Environmental context
The facility is situated in a mountainous region of Virginia, where pumped hydro storage leverages natural elevation differences. The environmental context includes considerations for water use, aquatic ecosystems, and land use. Thermal runaway risk is minimal for pumped hydro compared to lithium-ion systems. Siting in a sparsely populated area reduces community exposure risks. The plant supports grid reliability and renewable energy integration, aligning with state clean energy goals.
Frequently asked questions
Dominion Bath County Pumped Storage is located in Bath County, Virginia, United States, near the town of Warm Springs.
The facility has a generating capacity of over 3,000 MW, making it one of the largest pumped hydro storage plants in the world.
Pumped hydro storage uses two reservoirs at different elevations. During low demand, water is pumped uphill to the upper reservoir. During high demand, water is released downhill through turbines to generate electricity.
Pumped hydro storage facilities in the US are regulated by FERC for licensing and safety, and follow NFPA 855 guidelines for energy storage system safety.
Pumped hydro storage has minimal direct emissions but can affect local water systems and ecosystems. Environmental impact assessments and mitigation measures are required during licensing.