20MW Energy Storage System Would Store Renewable Energy

$17.1M Department of Energy loan will fund AES Corp. system to provide lower cost grid regulation services.

Published: 27-Dec-2010

> The U.S. Department of Energy is investing in a power storage system that brings together several emerging industries in the alternative energy field -- solar and wind power, and the lithium-ion battery.

The DOE finalized a $17.1 million loan for an AES Corporation power plant project in Johnson City, NY. The loan supports the construction of a 20-megawatt energy storage system that uses advanced lithium-ion batteries and will, thereby, be able to store power generated from solar and wind sources and supply it to the energy grid without the more costly and environmentally questionable practice called "grid frequency regulation."

According to the Solar Home and Business Journal, electricity dispatchers need to continuously balance the generation of power with the demand for energy. Solar and wind systems present complications for this balancing act because their generation is not constant and can vary dramatically in the space of minutes.

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