United States βΊ Grid βΊ Interconnection queues
OCTARY USA Β· INTERCONNECTION QUEUESNuclear interconnection queue in MISO (Midcontinent)
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 This shows every request: active, built and withdrawn.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
| Project | Capacity | Status |
|---|---|---|
| Nuclear project J4040, Van Buren County Nuclear |
735 MW | In study |
| Nuclear project J3932, Linn County Nuclear |
646 MW | In study |
| Replacing 244 MW of Solar with Nuclear; Duane Arnold Nuclear |
251 MW | In study |
| Replacing 200 MW of Solar with Nuclear; J1444 Nuclear |
200 MW | In study |
| Nuclear project J3815, St. Charles Parish County Nuclear |
153 MW | In study |
| Replacing 100 MW of Solar with Nuclear; Duane Arnold Nuclear |
100 MW | In study |
| Replacing 50 MW of Solar with Nuclear; Duane Arnold Nuclear |
64.0 MW | In study |
| Nuclear project J4010, Dewitt County Nuclear |
21.0 MW | In study |
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.
- Southeast (non-ISO utilities)27 Β· 3,736 MW
- West (non-ISO utilities)6 Β· 2,935 MW
- MISO (Midcontinent)8 Β· 2,170 MW
- PJM (Mid-Atlantic, Midwest)6 Β· 1,552 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 A request is a proposal to connect, not a commitment to build: historically most are withdrawn.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)