PJM Interconnection manages the high-voltage electric system that provides power to 65 million people in all or parts of 13 s ... tates and the District of Columbia. It's the largest power grid in North America. As a neutral, independent party, PJM administers a competitive wholesale electricity market. 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. PJM serves 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. 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.” read more