Private company
PJM Interconnection
Electric grid coordinator in the northeastern US
PJM Interconnection LLC (PJM) is a regional transmission organization (RTO) in the United States. It is part of the Eastern Interconnection grid operating an electric transmission system serving all or parts of Delaware, Illinois, Indiana, Kentucky, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia, and the District of Columbia.2 Wikipedia text CC BY-SA 4.0
Last updated Oct 21, 2026.
Overview
- Industryelectric power industry1
- HeadquartersValley Forge1
- Websitewww.pjm.com
- Legal formlimited liability company1
See how the biggest companies compare on our leaderboards

PJM Interconnection LLC (PJM) is a regional transmission organization (RTO) in the United States. It is part of the Eastern Interconnection grid operating an electric transmission system serving all or parts of Delaware, Illinois, Indiana, Kentucky, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia, and the District of Columbia.2
Links
- Websitewww.pjm.com1
- X (Twitter)x.com/pjminterconnect1
- Facebookwww.facebook.com/pjminterconnect1
- YouTubewww.youtube.com/channel/UC9cR5uHP_PFItl5FVpsywlA1
- WikipediaPJM Interconnection
- More imagesWikimedia Commons
- WikidataQ25004450
Sources
The numbers on this page point here. Each one links to the record it came from.
- 1WikidataPJM Interconnection on Wikidata
- 2WikipediaPJM Interconnection on Wikipedia
- 3Wikimedia CommonsPJM Interconnection photo by BlckAssn, CC BY-SA 4.0