United States › Grid › Interconnection queues › Montana
SOLAR + STORAGE · WESTSolar + storage project 421, Stillwater County
Solar + storage project 421, Stillwater County is a 200 MW solar + storage request suspended in the West interconnection queue, in Stillwater County, Montana, connecting to NorthWestern Energy.
Queue statusPaused / redesign
- PlanningQueued Feb 2022 (current stage)
- Consented (not yet reached)
- Construction (not yet reached)
- OperatingTarget Dec 2025 (not yet reached)
- Closed (not yet reached)
Studies assess what grid upgrades the project would need and who pays for them. A signed interconnection agreement is the main step before construction.
Request details
- Queue ID
- 421
- Grid region
- West (non-ISO utilities)
- Utility / transmission owner
- NorthWestern Energy
- Connection point (POI)
- 230 kV line between Columbus-Rapelje and Stillwater Wind
- Location
- Stillwater County, Montana
- Technology
- Solar: 200 MW · Battery
- Total requested
- 200 MW
- Service type
- Energy only (ERIS)
- Study phase
- System Impact Study 10/21/2022 Facilities Study 2/1/2023
- Queue status
- Suspended
- Entered queue
- 11 February 2022
- Proposed online date
- December 2025
Location
Marker shows the centre of Stillwater County; the queue data does not give exact sites.
Other requests in Stillwater County
- Wind + storage project 300, Stillwater CountyWind + storage · 315 MW · in study
- Gas project 465, Stillwater CountyGas · 150 MW · in study
- Solar + storage project 433, Stillwater CountySolar + storage · 65.0 MW · in study
- Solar + storage project 434, Stillwater CountySolar + storage · 65.0 MW · in study
- Onshore wind project 438, Stillwater CountyOnshore wind · 250 MW · suspended
- Onshore wind project 244, Stillwater CountyOnshore wind · 80.0 MW · built
- Solar project 203, Stillwater CountySolar · 2.0 MW · built
- Onshore wind project 31, Stillwater CountyOnshore wind · 396 MW · withdrawn
- Onshore wind project 302, Stillwater CountyOnshore wind · 302 MW · withdrawn
- Onshore wind project 145, Stillwater CountyOnshore wind · 200 MW · withdrawn
- Onshore wind project 147, Stillwater CountyOnshore wind · 200 MW · withdrawn
- Onshore wind project 451, Stillwater CountyOnshore wind · 100 MW · withdrawn
Source: Lawrence Berkeley National Laboratory, Queued Up, data through end of 2025, compiled from ISO/RTO and utility queues. Check the grid operator's own queue for the latest status. Report a problem