PJM Interconnection has approved $11.8 billion in baseline transmission projects under its 2025 Regional Transmission Expansion Plan, advancing major grid upgrades across the Mid-Atlantic and Midwest.
The plan addresses rising electricity demand, driven largely by data center growth, new generation patterns, and regional power flow changes. Costs will be allocated across PJM’s footprint under existing regional cost-sharing rules.
Dominion Energy received the largest award, totaling approximately $4.8 billion. The project includes a 185-mile, 525-kilovolt high-voltage direct current underground transmission line from Brunswick County to Loudoun County, Virginia, along with two converter stations costing about $1.5 billion. The line will deliver up to 3,000 megawatts into northern Virginia and is scheduled to enter service by June 2032.
PJM also approved a $1.7 billion, 221-mile, 765-kilovolt transmission line across central Pennsylvania proposed by NextEra Energy Transmission and Exelon. The project targets system-wide reliability needs in PJM’s northeastern region and is expected to begin operation by June 2031.
Additional projects include a $1.1 billion, 300-mile 765-kilovolt transmission build in central Ohio by Grid Growth Ventures, approximately $580 million in projects by PPL Electric, and a combined $568 million in projects by Exelon subsidiaries Commonwealth Edison and Potomac Electric Power.