PJM is North America’s largest power market, covering all or a portion of 13 states and Washington DC, and serving a population of 65 million. Demand growth varies substantially across PJM’s footprint with more rapid growth in the southeast due to data center demand. Historically coal and nuclear have been the primary source of supply though low-cost gas from the Marcellus shale has allowed natural gas to displace coal in recent years. Renewables continue to make up a small share (<5%) of generation.