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United States › Grid › Interconnection queues › California

OTHER · CAISO

Matterhorn

Matterhorn is a 1,218 MW other request in interconnection study in the CAISO interconnection queue, in Riverside County, California, connecting to SCE.

Queue statusIn planning
  1. PlanningQueued Apr 2023 (current stage)
  2. Consented (not yet reached)
  3. Construction (not yet reached)
  4. OperatingTarget Dec 2029 (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
2366
Grid region
CAISO (California)
Utility / transmission owner
SCE
Connection point (POI)
DEVERS 500 kV
Location
Riverside County, California
Technology
Solar: 405 MW · Wind: 407 MW · Battery: 406 MW
Total requested
1,218 MW
Service type
Energy only (ERIS)
Study phase
Caiso Cluster 15 Unvalidated
Queue status
Active
Entered queue
17 April 2023
Proposed online date
December 2029

Location

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

Power plants in California · Transmission lines in California

Other requests in Riverside 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