PJM works out interconnect deals for 11-MW AES battery project in Maryland

PJM Interconnection on Oct. 22 submitted to the Federal Energy Regulatory Commission an executed Interconnection Service Agreement and an executed Interconnection Construction Service Agreement with AES ES Tait LLC and interconnecting transmission owner Potomac Edison for an 11-MW energy storage project to be located at the coal-fired Warrior Run plant in western Maryland.

The AES ES Tait agreements facilitate the interconnection to the PJM transmission system of an 11-MW storage facility located in Cumberland, Maryland. The AES ES Tait ISA indicates that the storage facility is an Energy Resource that will be permitted to inject 11 MW (nominal) into the system, and that PJM reserves the right to limit injections to this quantity in the event reliability would be affected by output greater than such quantity.

The agreements require that AES ES Tait enter into an agreement with the owner of the Warrior Run generating facility (AES WR Limited Partnership) on whose property this storage facility is to be located, and with whom AES Tait will share use of certain interconnection facilities.

Under the ISA, on or before Oct. 31, 2015, AES ES Tait must demonstrate commercial operation of one generating unit, and on or before Nov. 15, 2015, it must demonstrate commercial operation of three additional generating units.

This is called the AES Warrior Run Energy Storage Project. Equipment includes: 138/13.8kV Main Step-Up Transformer (8/10.6/13.3 MVA); 138kV breaker for connection to the point of interconnection 13.8kV switchgear; four 13.8/0/42kV (2.5/2.8MVA) transformers; four 2.5-MW (nominal) AES Advancion Energy Storage Cores, each consisting of batteries, bi-directional inverters, and control system; and one 13.8/0.48kV auxiliary transformer (750kVA).

A project contact is: AES ES Tait LLC, 4300 Wilson Blvd, Arlington, VA 22203, Attn: Piers Lewis, Phone: (703) 682-6404, piers.lewis@aes.com.

About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.