Electric Reliability

Regulation

In context of electricity: The capability of a generating unit to automatically respond to the CAISO’s four-second automatic generation control signal to adjust its output as may be needed to maintain system frequency  and reduce risks of outages. [Source: California Independent System Operator (CAISO), 2013 Flexible Capacity Procurement Requirements, p.9.]

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Renewables Integration

Deploying and operating enough flexible, controllable resources to ensure grid reliability given the variability and uncertainty associated with intermittent renewable power generation. [Source: California Energy Commission (CEC) Website: http://www.cpuc.ca.gov/PUC/energy/Renewables/hot/Renewable+Integration.htm]

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Peaking Capacity (Electric)

Power generation capacity used to serve peak demand. Peaking generating units operate a limited number of hours per year, and their capacity factor is normally less than 20%. Peaking capacity is often served by simple cycle combustion turbines.  [Source: The Potential Benefits of Distributed Generation and Rate-Related Issues That May Impede Their Expansion, U.S. Department of

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