US grid operator PJM Interconnection, whose operations serves 60 million Americans across the Midwest and northeast of the country, has hit the renewables headlines twice this week for signing up to two separate energy storage deals.
The first will use AES’s battery and energy management technology to provide an additional 40MW of storage to PJM facilities at Dayton Power and Light’s Tait generating station, just south of Dayton, Ohio. The AES battery array will provide frequency regulation and bring new energy technology to Ohio, says AES.
Even better news is that Beacon Power, the flywheel company that only just survived bankruptcy, is adding another 20MW of energy storage to PJM’s operations, reports Forbes. Now officially back from the dead, Beacon is set to start work building the flywheel facility in Pennsylvania from tomorrow.
These are not PJM’s first forays into energy storage. The company already has around 80MW of storage, much of which is used as a cheaper alternative to natural gas peaker plants in order to balance energy supply and demand fluctuations.