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Comments to FERC on Seasonal Capacity Markets and Electricity Demand

PJM Interconnection (PJM), the electric grid and wholesale market operator in 13 states and Washington D.C., currently has a market design that leads to over-procurement of electric generating capacity, particularly from generation resources that are able to provide capacity throughout the year. This inefficient market design raises capacity costs and suppresses the participation of resources, such as wind, solar, and natural gas, whose generating capacity varies by season.

The Federal Energy Regulatory Commission (FERC) recently held a technical conference to seek feedback on how PJM can redesign its capacity market to better facilitate participation of these seasonal resources. Our comments to FERC argue that replacing or supplementing the current annual-only capacity product with seasonal capacity products would improve the efficiency of the PJM capacity market. In addition, we suggest changes in the capacity market participation rules for wind, solar, and other intermittent resources.