About PJM

PJM Interconnection is a regional transmission organization (RTO) that coordinates the movement of wholesale electricity in all or parts of Delaware, Illinois, Indiana, Kentucky, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia and the District of Columbia.

• Acting as a neutral, independent party, PJM operates a competitive wholesale electricity market and manages the high-voltage electricity grid to ensure reliability for more than 51 million people.

• PJM’s long-term regional planning process provides a broad, interstate perspective that identifies the most effective and cost-efficient improvements to the grid to ensure reliability and economic benefits on a system wide basis.

• An independent Board oversees PJM’s activities. Effective governance and a collaborative stakeholder process help PJM achieve its vision: “To be the electric industry leader – today and tomorrow – in reliable operations and efficient wholesale markets.”

Territory Served

PJM Interconnection coordinates the movement of electricity through all or parts of Delaware, Illinois, Indiana, Kentucky, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia and the District of Columbia. The PJM region has an area of 168,500 square miles, a population of about 51 million and a peak demand of 144,644 megawatts.

Map of PJM Territory

ATSI Integration

On August 17, 2009, FirstEnergy Service Company, on behalf of American Transmission Systems, Inc. (ATSI), its transmission affiliate, filed with the Federal Energy Regulatory Commission (FERC) to withdraw its transmission assets from Midwest Independent System Operator and to place them into PJM as of June 1, 2011. In addition to the ATSI transmission assets, the filing includes the ATSI Utilities, namely The Cleveland Electric Illuminating Company, Ohio Edison Company, The Toledo Edison Company, and Pennsylvania Power Company, as well as the generation affiliate, FirstEnergy Solutions.

PJM will be working with the FirstEnergy Ohio Utilities affiliates listed above, other generator owners and load serving entities in the ATSI footprint, and all interested stakeholders to ensure that the ATSI integration is accomplished safely and reliably and in accordance with all reliability standards and market rules.