AES plans 10-MW battery storage project at coal plant in Maryland

AES WR Limited Partnership on April 15 filed with the Federal Energy Regulatory Commission a jurisdictional service agreement related to a plan to install a 10-MW battery system at the Warrior Run coal plant in western Maryland.

The parties to a License Agreement for this project are AES WR and AES ES Tait LLC, which are both indirect, wholly-owned subsidiaries of AES Corp. (NYSE: AES). AES WR owns and operates the 180 MW (summer rating) Warrior Run generating facility located near Cumberland, Maryland, within the geographic footprint of PJM Interconnection. The  coal-firedWarrior Run Facility has been certified by the commission as a qualifying cogeneration facility under the Public Utility Regulatory Policies Act (PURPA). The output of the Warrior Run Facility is sold to Potomac Edison under a long-term PURPA contract.

AES ES Tait in August 2013 began offering Regulation service from a 20-MW battery-based energy storage project, located at the site of the Tait Electric Generating Station owned by DPL Energy LLC in Ohio within the footprint of the PJM market. The Tait Battery Project is an advanced lithium-ion battery storage system consisting of ten inverter/battery modules having a regulation capacity of approximately 20 MW.

“In addition to providing Regulation service from the Tait Battery Project, AES ES Tait now intends to provide Regulation service to the PJM market from a 10 MW battery-based energy storage project to be installed at the site of the Warrior Run Facility (the ‘Warrior Run Battery Project’),” said the filing. “The Warrior Run Battery Project will use advanced lithium ion batteries similar to those installed at the Tait Battery Project. In order to accomplish physical interconnection to the grid and provide Regulation service to the PJM market, the Warrior Run Battery Project will need to use the 6-mile, 138 kV transmission tie-line running from the Warrior Run Facility to the Potomac Edison switchyard in Ridgeley, West Virginia and certain other interconnection facilities associated with Warrior Run’s existing electrical interconnection with Potomac Edison (collectively, the ‘Interconnection Facilities’).

“AES ES Tait will also have to install certain metering and other equipment (the ‘Equipment’) at the Warrior Run site in connection with its use of the Interconnection Facilities. The License Agreement sets forth the terms and conditions governing Warrior Run’s license of the Interconnection Facilities and grant of other rights of use to AES ES Tait in connection with the construction, ownership, use, operation, and maintenance of the Warrior Run Battery Project and the Equipment at the Warrior Run site. The specific facilities that will be used by AES ES Tait are described in Exhibit B of the License Agreement. The License Agreement submitted in this filing is substantially similar to the DPLE Lease Agreement previously accepted by the Commission with respect to the Tait Battery Project.”

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.