Monthly Archives: July 2014

FERC Approves CAISO-led EIM

The California Independent System Operator (CAISO) manages about 80 percent of California’s power grid and facilitates the operation of a wholesale energy market, including: day-ahead, hour-ahead, and five-minute energy markets as well as ancillary services and financial transmission rights markets. For the past several years, CAISO has been working closely with PacifiCorp (a regulated electric utility serving parts of Oregon, northern California and southeastern Washington) to develop a regional energy imbalance market (EIM). This market will allow balancing authority areas (BAAs) to pool a broad array of generation resources through CAISO’s five-minute energy market.  CAISO will call on the BAAs to respond to fluctuations in supply and demand, using the most economic resources available anywhere in their shared territories.

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