Helms Pumped Storage is a 1.1 GW Hydroelectric Pumped Storage asset in CAISO (California), currently Operating.
Helms Pumped Storage is reported in California since 1984 under PG&E. Available operating and financial measures include -4.6% capacity factor and -426 GWh annual generation; $1401/kW reported CapEx.
- Location
- Fresno, California
- Technology
- Hydroelectric Pumped Storage
- Owner / parent
- PG&E
- Operator
- Pacific Gas & Electric Co.
- Grid
- CAISO (California)
- Plant ID
- 6100
What stands out
Helms Pumped Storage is a 1.1 GW Hydroelectric Pumped Storage asset in California with status Operating.
Latest annual operating measures report -4.6% capacity factor and -426 GWh annual generation.
Available financial measures include $85.0/MWh OpEx, $1401/kW CapEx.
Latest linked story: “Pacific Gas and Electric Company; Notice of Availability of Final Environmental Assessment” (Federal Register (FERC), 2026-05-11).
Market and operating context
- ISO / market
- CAISO (California)
- Balancing authority
- California Independent System Operator
- NERC region
- WECC
- State rank
- #2 of 247
- National rank
- #18 of 1,462
Why it matters
For this asset in CAISO (California), operating status, generation, ownership, and linked events are the primary facts for performance and asset-level diligence. The exact chart and source-linked records below let the reader test those facts before moving to a deeper report.
