PJM and its members and stakeholders took numerous steps in 2022 to ensure the reliability, security and resilience of the bulk electric system while adding ways to better prepare for extreme circumstances and global supply chain volatility.
PJM, in coordination with its members, addressed these factors to support the reliable, economic flow of electricity for 65 million people in 13 states and the District of Columbia.
65 Million people in 13 states + D.C.
88,115 Miles of
The 1,419 electric power generators and 88,115 miles of transmission lines within the PJM footprint are owned by public utilities and independent companies or cooperatives.
As the federally designated Reliability Coordinator for the regional power grid, PJM coordinates these facilities’ operations moment-to-moment, hour-by-hour and day-to-day throughout the year.
Using the principle of security constrained economic dispatch, PJM works to ensure reliable, safe and economical operations in coordination with our members and stakeholders.
The PJM grid performed reliably during a 2021–2022 winter marked by relatively mild to typical cold weather. Overall, winter temperatures were average between Dec. 1, 2021, and Feb. 28, 2022.
Renewable resources made up 7% of generation, compared with coal (23%), nuclear (33%) and natural gas (36%).
In advance of the 2022–2023 winter, PJM enhanced seasonal preparation, including the rollout of a new Cold Weather Advisory to create more advance notice of challenging conditions three to five days ahead of expected weather.
The winter of 2022–2023 was less than a week old when Winter Storm Elliott arrived in the PJM region, severely impacting generators beginning on Dec. 23.
Through a series of emergency procedures, a Call for Conservation and an order from the U.S. Dept. of Energy to allow some generators to run beyond their permit limits for a short window, the PJM bulk power system remained reliable.
PJM is working on a comprehensive analysis of the events surrounding Winter Storm Elliott and lessons to be learned from the experience.