California heat wave: Demand response worked, grid numbers indicate

September 30, 2010 at 7:36 pm

On Sept. 27 downtown Los Angeles hit its all-time temperature record: 113° F. That same day San Diego Electric & Gas hit its all-time system peak demand (in terms of megawatts). Farther north, in Pacific Gas & Electric territory, the weather was also hot but not nearly so extreme — which helped keep the overall load on California’s power grid manageable (but still very high).

To cope with such extreme demand for electricity, California utilities activated a variety of demand response programs. These included default dynamic pricing for all large customers (min. 200 kW) as well as many intermediate customers (20-200 kW), air conditioning load control, and interruptible power.

It looks like these demand response measures succeeded — but decide for yourself. Here’s a chart that tells the story…

Full story: California heat wave: Numbers from the grid indicate demand response success

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Entry filed under: demand response, Utilities. Tags: , , , , , , .

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