Summer heat, economy, drove electric demand


The PJM Interconnection, which manages the electric grid across all or part of 13 states, including Maryland, has issued its 2010 annual report. Last summer’s heat drove electric demand above 100,000 megawatts on more than 70 days, a new record. Consumers in the mid-Atlantic were asked to curtail demand on three dates. After adjusting for the heat, summer demand still grew by 1 percent over 2009, the largest such increase since 2006, attributed to a recovering economy.

(SUN PHOTO: Karl Merton Ferron, July 2010)

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