The AES Laurel Mountain – BESS is a 32,000kW energy storage project located in Elkins, West Virginia, US.

The electro-chemical battery energy storage project uses lithium-ion as its storage technology. The project was commissioned in 2011.


The AES Laurel Mountain – BESS was developed by AES Energy Storage. The project is owned by AES Energy Storage (100%), a subsidiary of The AES.

The key applications of the project are frequency regulation and ramping.

Contractors involved

A123 Systems and AES Energy Storage have delivered the battery energy storage project.

Additional information

The project is supplying emissions-free renewable energy and clean, flexible, operating reserve capacity to the PJM Interconnection, the largest power market in the world.

About AES Energy Storage

AES Energy Storage LLC (AES Energy), a subsidiary of The AES Corp, is an energy service provider that offers commercial energy storage solutions. The company provides operation and maintenance, and planning and deployment services. Its planning and deployment services include facilities design and engineering, site development and preparation, geotechnical evaluation and permitting, interconnection engineering, bidding management, procurement and construction, critical system commissioning, facility commissioning, and project planning. AES Energy owns and operates power plants in the US. The company caters its services to the utilities, power markets, independent power producers, and renewable developers. AES Energy is headquartered in Arlington, Virginia, the US.


All publicly-announced energy storage projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects are sourced through secondary information sources such as country specific power players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.