Department of Market Monitoring Report on Demand Response Issues and Performance 2024 Posted

The California ISO Department of Market Monitoring (DMM) has published the Demand Response Issues and Performance 2024 Report providing analysis of demand response resources participation and performance in the ISO market on high load days in summer 2024.

Demand response accounted for about 2.6 percent (or 1,400 MW) of total system resource adequacy capacity the summer of 2024, compared to about 3 to 4 percent of total system resource adequacy capacity in the previous four summers. This drop is mainly due a change in CPUC rules removing the planning reserve margin and transmission adders previously applied to demand response resource capacity used to meet resource adequacy requirements,

On high demand days in the summer, about 70 percent of the overall demand response capacity in real-time reported performing as scheduled. Utility demand response, which accounts for about 80 percent of demand response used to meet resource adequacy requirements, reported substantially higher and more consistent performance than third party demand response. Utility demand response reported to curtailing about 81 percent of scheduled load reductions, while reported performance of non-utility demand response averaged 54 percent of scheduled load reductions. 

This report also follows up on prior recommendations made by DMM for improving the availability and performance of demand response resources used to meet resource adequacy requirements.

Information related to market monitoring is available on the Market Monitoring webpage.