Rancho PenasquitosUnder construction
San Diego County, California · EIA plant ID 56615 · Operator: San Diego County Water Auth
4 MW under construction (Conventional Hydroelectric), first expected Oct 2026 · EIA-860M
×5 MW hydro retired since 2020 (latest Oct 2022)
Nameplate—MWSummer — MW
Generators0in service · 4 MW building
Net generation—GWh12 mo
Capacity factor—no 923 generation in the last 12 months
Heat rate—thermal plants only
First online—
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
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.
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.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2007 | 17.5 | 45.5% | — |
| 2008 | 22.9 | 59.2% | — |
| 2009 | 20.3 | 52.8% | — |
| 2010 | 20.3 | 52.8% | — |
| 2011 | 15 | 39.0% | — |
| 2012 | 18.5 | 47.8% | — |
| 2013 | 17.4 | 45.1% | — |
| 2014 | 18.5 | 48.1% | — |
| 2015 | 2.3 | 5.9% | — |
| 2016 | 8.9 | 22.9% | — |
| 2017 | 9.7 | 25.1% | — |
| 2018 | 11 | 28.6% | — |
| 2019 | 12.9 | 33.4% | — |
| 2020 | 2.7 | 6.9% | — |
| 2021 | 10 | 25.8% | — |
| 2022 | 16.1 | 68.4% | — |
| 2023 | 0 | — | — |
| 2024 | -0.1 | — | — |
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 |
|---|---|---|---|---|---|---|---|---|
| G200 | Conventional Hydroelectric | HY | 4.3 | 4.1 | planned Oct 2026 | Under construction | — | coming soon |
| G100 | Conventional Hydroelectric | HY | 4.6 | 3.6 | Jan 2007 | Retired Oct 2022 | — | coming soon |
Owner / operator
Operator: San Diego County Water Auth. 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.
| SDCCD - Miramar | 1 MW | 3.5 km |
| Nighthawk Energy Storage, LLC | 300 MW | 7.1 km |
| AT&T - San Diego Trade Street | 1 MW | 7.4 km |
| Pome BESS | 100 MW | 7.6 km |
| Canyon Crest Academy | 1 MW | 7.7 km |
| Miramar Energy Facility | 106 MW | 8.3 km |