What is PJM?
PJM stands for the Pennsylvania, Jersey, Maryland Power Pool. It is the electricity control area (the electric grid) for New Jersey and all or parts of 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. All electricity essentially comes from PJM regardless of the state in which it was generated. PJM insures that there is enough power to meet expected customer electricity demand at all times plus an additional reserve margin above the peak demand is ready and deliverable in the control area and ensures the reliability of the electric grid and monitors the market to prevent market powers/manipulation.