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United States › Grid › Interconnection queues › Montana

SOLAR + STORAGE · WEST

Solar + storage project 435, Rosebud County

Solar + storage project 435, Rosebud County is a 800 MW solar + storage request in interconnection study in the West interconnection queue, in Rosebud County, Montana, connecting to NorthWestern Energy.

Queue statusIn planning
  1. PlanningQueued Nov 2022 (current stage)
  2. Consented (not yet reached)
  3. Construction (not yet reached)
  4. OperatingTarget Dec 2025 (not yet reached)
  5. 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
435
Grid region
West (non-ISO utilities)
Utility / transmission owner
NorthWestern Energy
Connection point (POI)
Colstrip 500kV Substation
Location
Rosebud County, Montana
Technology
Solar: 800 MW · Battery
Total requested
800 MW
Service type
NRIS and ERIS
Study phase
Feasibility Study 2/13/2023 System Impact Study 8/15/2023 Facilities Study 7/26/2024
Queue status
Active
Entered queue
4 November 2022
Proposed online date
December 2025

Location

Marker shows the centre of Rosebud County; the queue data does not give exact sites.

Power plants in Montana · Transmission lines in Montana

Other requests in Rosebud County

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