The 31.5 MW Beech Ridge energy storage developed by Invenergy is located adjacent to its 100.5 MW wind farm in West Virginia. Beech Ridge will use stored wind energy to provide fast-response frequency regulation to the PJM Interconnection ancillary services market.

The energy storage device will have a combined nominal output of up to 31.5 MW, comprised of eighteen 1.8 MW modules. Each 1.8 MW module includes: one standard shipping container housing four battery strings; four 450 kW inverters to convert power between direct current and alternating current; a chiller to cool the battery containers; and a transformer for the inverter.

Lithium Iron Phosphate Battery