United States βΊ Grid βΊ Interconnection queues
OCTARY USA Β· INTERCONNECTION QUEUESInterconnection queue in SPP (Southwest Power Pool) (2016 requests)
Before a new power plant or battery can connect to the US grid, it joins a queue for studies and an interconnection agreement. Most requests never get built. This shows every request: active, built and withdrawn.
Map
Requests
Capacity in the queue by state
Click a state to drill down.
By grid region
ISO/RTO markets and the non-ISO West and Southeast.
- West (non-ISO utilities)42 Β· 10.0 GW
- SPP (Southwest Power Pool)23 Β· 4,085 MW
- CAISO (California)13 Β· 3,530 MW
- PJM (Mid-Atlantic, Midwest)31 Β· 2,290 MW
- ERCOT (Texas)12 Β· 2,229 MW
- MISO (Midcontinent)15 Β· 1,433 MW
- Southeast (non-ISO utilities)11 Β· 977 MW
- ISO-NE (New England)2 Β· 866 MW
- NYISO (New York)13 Β· 370 MW
Requests by year joined
Capacity of requests in this view, by the year they entered the queue. Click a year.
Source: Rand, J. et al., Queued Up, Lawrence Berkeley National Laboratory, data through end of 2025. Compiled from the queues of the 7 ISO/RTOs and dozens of non-ISO utilities. A request is a proposal to connect, not a commitment to build: historically most are withdrawn. Capacity is the requested interconnection size; hybrids include the storage component. Transmission lines Β· Planned power plants (EIA)