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BATTERY STORAGE · CAISOHelios Grid Reliability
Helios Grid Reliability is a 206 MW battery storage request in interconnection study in the CAISO interconnection queue, in Calaveras County, California, connecting to PGAE.
Queue statusIn planning
- PlanningQueued Apr 2023 (current stage)
- Consented (not yet reached)
- Construction (not yet reached)
- OperatingTarget Sep 2028 (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
- 2262
- Grid region
- CAISO (California)
- Utility / transmission owner
- PGAE
- Connection point (POI)
- LOCKEFORD 115 kV
- Location
- Calaveras County, California
- Technology
- Battery: 206 MW
- Total requested
- 206 MW
- Service type
- Network resource (NRIS)
- Study phase
- Caiso Cluster 15 Unvalidated
- Queue status
- Active
- Entered queue
- 17 April 2023
- Proposed online date
- September 2028
Location
Marker shows the centre of Calaveras County; the queue data does not give exact sites.
Power plants in California · Transmission lines in California
Other requests in Calaveras County
- Double Springs Energy StorageBattery storage · 101 MW · agreement signed
- Belterra Energy StorageBattery storage · 514 MW · in study
- Holly OaksBattery storage · 128 MW · in study
- Bear Mountains Pumped StorageBattery storage · 500 MW · withdrawn
- EyreBattery storage · 103 MW · withdrawn
- Chanson Energy Storage FacilityBattery storage · 100 MW · withdrawn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