Regulation requirements with high wind generation penetration in the ERCOT market

Wind generation increases the variability and unpredictability of system net load and inevitably leads to changing requirements for ancillary services procurement. One type of ancillary service that is affected by wind generation is regulation. This paper summarizes the results of a major study of wind integration in the ERCOT system, in which the magnitude and timing of changes in regulation requirements are thoroughly analyzed. The adequacy of existing resources to accommodate this regulation requirement was also investigated, and found to be generally sufficient.