Whale Rock Pumped Storage Hydro ProjectPlanned
San Luis Obispo County, California · EIA plant ID 66685 · Operator: Premium Energy Holdings
600 MW planned (Hydroelectric Pumped Storage), first expected Jul 2027 · EIA-860M
Nameplate—MWSummer — MW
Generators0in service
Net generation—GWh12 mo
Capacity factor—no 923 generation in the last 12 months
Heat rate—thermal plants only
First online—
Capacity factor by year
Net MWh ÷ (summer MW × hours), primary-fuel units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
No capacity factor available.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| WH001 | Hydroelectric Pumped Storage | PS | 200 | 200 | planned Jul 2027 | Planned | — | coming soon |
| WH002 | Hydroelectric Pumped Storage | PS | 200 | 200 | planned Jul 2027 | Planned | — | coming soon |
| WH003 | Hydroelectric Pumped Storage | PS | 200 | 200 | planned Jul 2027 | Planned | — | coming soon |
Owner / operator
Operator: Premium Energy Holdings. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
Nearby plants
Within 80 km.
| Camp San Luis Obispo | 1 MW | 19.1 km |
| Vintner Solar | 2 MW | 20.3 km |
| Atascadero State Hospital | 1 MW | 21.1 km |
| CA-DGS-California Men's Colony | 2 MW | 21.3 km |
| Stenner Creek Solar | 5 MW | 21.8 km |
| Firestone Walker Brewery - Phase 1 | 2 MW | 22.2 km |