Application: Renewable Integration, Frequency Regulation

Frequency Regulation Services and a Firm Wind Product: AES Energy Storage Laurel Mountain Battery Energy Storage (BESS)

Opportunity

AES Laurel Mountain is a 98MW wind power generation plant located in Belington, WV that is built to supply more than 260,000MWh of renewable energy annually to the PJM Interconnection. However, since wind generation is variable, wind power plants are unable to supply capacity services to assist with grid reliability or earn additional revenue associated with those services like most other power plants.

Approach

Building on its five years of implementing grid scale storage and history as a global developer of power generation, AES developed a 32MW/8MWh grid energy storage solution at the Laurel Mountain facility. The storage system is the largest of its kind and uses A123 System’s advanced lithium ion battery technology. AES employed its storage operating system (sOS) for market optimization and interacts with controls in A123’s proprietary AEROS™ management system.

Results

The energy storage system enables AES Laurel Mountain to provide frequency regulation services to the PJM market, adding a revenue stream and operating capability not available from most wind generating plants. This emissions-free operating reserve capacity plays a critical role in maintaining overall grid reliability and AES operates it at better than 95% availability. In addition, the storage system provides the capability to moderate the output of the wind generation to manage ramp rates or other factors. The facility was recognized as 2011 Wind Project of the Year by Renewable Energy World. For more information, please visit http://www.aesenergystorage.com


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