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AES Energy Storage says its AES Laurel Mountain facility, located in Belington, W.Va., has surpassed the 400,000 MWh mark of regulation service to the PJM Interconnection.

Laurel Mountain, a plant comprising 98 MW of wind generation and 64 MW of integrated battery-based energy-storage resource, began operation in 2011 and has entered its second year of continuous service supplying renewable energy and regulation service to PJM. AES says the unit's ability to regulate up and down, by charging and discharging stored energy, enables an operating range of 64 MW of flexible capacity with no minimum generating level.

"As the largest grid operator in North America, PJM considers energy storage vital to the reliable operation of the electric system of the future," says PJM President and CEO Terry Boston. "As with any resource that participates in our electricity market, the AES Laurel Mountain storage facility is proving its worth under real-world conditions."


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