PJM Interconnection
Regional transmission organization coordinating wholesale electricity in 13 states and DC including Ohio and Pennsylvania.
About PJM Interconnection
PJM Interconnection is a regional transmission organization coordinating the movement of wholesale electricity in all or parts of 13 states and the District of Columbia, including Ohio and Pennsylvania.
Related articles
How the US Power Grid Works: A Plain Guide (2026)
Learn how the US power grid works, from power plants to your outlet, and what it means for Pennsylvania electricity rates in 2026.
What Does a Public Utility Commission Do? Ohio Guide 2026
Learn what a public utility commission does, how Ohio's PUCO protects ratepayers, and how to use that knowledge to lower your electric bill in 2026.
Understanding Your PSE&G Bill in New Jersey (2026)
A plain-English breakdown of every charge on your PSE&G bill, what drives your costs, and how to lower them in 2026.
Ancillary Services: What They Mean for Your Business Electric Bill
Ancillary services keep the grid stable, and they show up on your commercial electric bill. Learn what they are and how they affect what you pay.
Marginal Prices and Your Business Electric Bill
Marginal prices drive wholesale electricity costs in deregulated markets. Learn how they affect small business rates in TX, OH, PA, MA, NJ, and DC.
Stop overpaying for electricity
See what you could save in 30 seconds
Free comparison • No commitment • Takes 30 seconds