Willey Battery Utility (WBU) is an innovative 6MW/2MWh battery power storage system providing reliable and stable supply-demand balancing service for the frequency regulation market operated by PJM, the largest independent service operator of wholesale electricity in the United States.

Perennial Power owns 100% interest in Willey Battery Utility. As a developer and operator of thermal and renewable power infrastructure, Sumitomo Corporation and Perennial Power contribute to the stable power supply through energy storage service which is indispensable for the future clean energy world.

Capacity: 6 MW/2 MWh
COD: Jan 2016
Market: PJM
Project Share: 100%