Philadelphia, September 27, 2010 — Though the summer is officially over, the hot weather this year resulted in a new record for the amount of electricity used during the summer months of June, July and August in the 13-state plus D.C. PJM Interconnection region.
Consumers in the PJM region used 203,681,531 MWh (203,681,531,000 kWh) of electricity this summer. (Enough electricity to run all of Mexico for one year.) The amount of electricity used was about 12 percent more than the summer of 2009, which was cooler than normal. The previous record summer use of electricity in PJM was 203,415,406 MWh in 2005.
Heat drives the need for air conditioning, which increases the amount of electricity used. During the summer months of 2010 in the PJM region, the need for air conditioning was 37 percent higher than normal and 47 percent higher than last summer, according to data from the National Weather Service.
Electricity use data for 2010 are accurate but subject to final verification.
PJM Interconnection, founded in 1927, ensures the reliability of the high-voltage electric power system serving 51 million people 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.
PJM coordinates and directs the operation of the region’s transmission grid, which includes 6,038 substations and 56,500 miles of transmission lines; administers a competitive wholesale electricity market; and plans regional transmission expansion improvements to maintain grid reliability and relieve congestion.