🔌 EV Partnership Switch to Octopus Energy & unlock exclusive smart EV charging rates Find out more → Skip to main content

United States › Power plants › Battery storage › California

BATTERY STORAGE

Hecate Grid Gwent Storage 1

Hecate Grid Gwent Storage 1 is a 135 MW planned battery storage site in Ventura County, California, operated by Hecate Grid Gwent Storage 1, LLC.

Plant statusIn planning
  1. Planning (current stage)
  2. Consented (not yet reached)
  3. Construction (not yet reached)
  4. OperatingTarget Dec 2028 (not yet reached)
  5. Closed (not yet reached)

Planned start of operation reported to EIA: Dec 2028.

Open in Google MapsMore battery storage sites in California

Generators

Each generating unit EIA lists at this plant.

UnitTechnologyCapacityStatusOnlineRetired / planned retirement
GWNTBatteries135 MW Planned, approvals not yet soughtTarget Dec 2028

Plant details

Operator
Hecate Grid Gwent Storage 1, LLC
Location
Ventura County, California
Balancing authority
CISO
Sector
IPP Non-CHP
Capacity
Planned: 135 MW
EIA plant ID
66409

Location

34.2809, -118.9030

Nearby power plants

Source: U.S. Energy Information Administration, Form EIA-860M, September 2026. Planned dates are targets reported by the developer and often change. Report a problem