Capacity credit evaluation of solar power plants

Renewable power generators, such as wind or solar, are not dispatchable since their fuel sources are intermittent in nature. Unlike conventional generators, these generators serve less load than their rated value. Therefore, a mechanism is needed to predict their power outputs and evaluate their capacity value. This prediction helps to estimate to what extent renewable power plants with intermittent sources can substitute for other power generations in the system while maintaining the same reliability standards. These calculations are an important factor in generation planning of power systems with renewable intermittent sources.