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What is the grid?

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 neutrally and independently, PJM operates the world’s largest competitive wholesale electricity market and ensures the reliability of the largest centrally dispatched grid in the world.

PJM’s members, totaling more than 400, include power generators, transmission owners, electricity distributors, power marketers and large consumers. PJM’s role as a federally regulated RTO means that it acts independently and impartially in managing the regional transmission system and the wholesale electricity market. The company is headquartered in Valley Forge, Pa.