Mattawoman Energy works at PJM to interconnect 1,038-MW project

Mattawoman Energy LLC is still working at PJM Interconnection on an interconnection agreement for a a natural gas-fueled combined-cycle facility arranged in a two combustion turbine, one steam turbine (2×1) configuration to be located in Brandywine, Maryland.

PJM has issued a September 2016 revised study on the project, with the study being a mid-point in the queue process.

The combined generators will have a maximum facility output of 1,038.1 MW and 952 MW of Capacity Injection Rights (CIRs). Mattawoman Energy’s proposed in-service date for this project is April 1, 2019. While the Potomac Electric Power (Pepco) construction schedule is supportive of the commercial operation date, this study report does not imply a Pepco commitment to that date. Pepco and Virginia Electric and Power Co. (VEPCO) are responsible for the work scope contained in this report.

This project, under PJM queue numbers AA2-170 and Z2-060, will interconnect with the Pepco transmission system via a generation lead line from the generating facility to a Mattawoman Energy-owned disconnect switch and breaker placed outside of a new Pepco 230-kV switchyard. The new Pepco switchyard will be constructed adjacent to the existing right of way between the Burches Hill and Talbert Substations on land purchased by Mattawoman Energy. 

After further discussions and coordination meetings with Mattawoman Energy, Pepco determined the need to make a change from the Point of Interconnection (POI) indicated in a July 2014 System Impact Study. The PJM study said that Mattawoman Energy’s proposed schedule from here includes:

  • Substantial Site Work Completed – Nov. 1, 2017
  • Delivery of Major Electrical Equipment – Dec. 1, 2017
  • Commercial Operation – April 1, 2019

In other recent news for this project:

  • Panda Stonewall LLC, which has a nearly-completed power project in Virginia, on Sept. 22 applied with the Federal Energy Regulatory Commission for various approvals, including authorization to make wholesale sales of electric energy, capacity, and ancillary services at market-based rates. Panda Stonewall is developing, and will own and operate, a natural gas-fired facility located in Leesburg, Loudoun County, Virginia, within the PJM Interconnection balancing authority area (BAA). The Panda Stonewall Facility will have a summer rating capacity of 774 MW (778 MW nameplate) and is expected to achieve commercial operation on or around Dec. 2, 2016. It noted that an affiliate is developing the Mattawoman Energy project in Maryland, a natural gas-fired combined cycle plant slated for commercial operation in the spring of 2019.
  • The members of FERC on Aug. 29 approved a gas pipeline expansion project of Dominion Transmission Inc. that will serve two new power plants in Virginia and Maryland. This is the Leidy South Project. Dominion conducted an open season in April 2014. As a result of the open season, Dominion executed binding precedent agreements for 100% of the project’s capacity for 20-year terms with: Panda Stonewall LLC for 55,000 dekatherms (Dth) per day; Virginia Power Services Energy for 45,000 Dth per day; and Mattawoman Energy LLC for 55,000 Dth per day.
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.