Nacimiento Hydro Project
San Luis Obispo County, California · EIA plant ID 50352 · Operator: Monterey Cnty Water Res Agency
Nameplate4MWSummer 4 MW
Generators2in service
Net generation12GWh12 mo to Dec 2025
Capacity factor34%hydro units, summer MW
Heat rate—thermal plants only
First online1987
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), hydro 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) |
|---|---|---|---|
| 2001 | 15.5 | 44.2% | — |
| 2002 | 11.9 | 33.9% | — |
| 2003 | 14.5 | 41.4% | — |
| 2004 | 6.6 | 18.8% | — |
| 2005 | 19.9 | 56.7% | — |
| 2006 | 15.6 | 44.7% | — |
| 2007 | 14.8 | 42.2% | — |
| 2008 | 14.3 | 40.7% | — |
| 2009 | 9.9 | 28.1% | — |
| 2010 | 12.2 | 34.8% | — |
| 2011 | 17.7 | 50.5% | — |
| 2012 | 9 | 25.7% | — |
| 2013 | 3 | 8.6% | — |
| 2014 | 1 | 2.8% | — |
| 2015 | 0.6 | 1.8% | — |
| 2016 | 1.1 | 3.0% | — |
| 2017 | 17.6 | 50.1% | — |
| 2018 | 8.1 | 23.1% | — |
| 2019 | 13.2 | 37.7% | — |
| 2020 | 11.7 | 33.2% | — |
| 2021 | 3.9 | 11.1% | — |
| 2022 | 0.6 | 1.8% | — |
| 2023 | 18.6 | 53.1% | — |
| 2024 | 18.2 | 51.9% | — |
| 2025 | 11.8 | 33.6% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | HY | 4 | 3.7 | Jul 1987 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 0.4 | 0.3 | Jul 1987 | Operating | — | coming soon |
Owner / operator
Operator: Monterey Cnty Water Res Agency. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Monterey Cnty Water Res Agency | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| Sargent Canyon Cogeneration | 38 MW | 15.7 km |
| Salinas River Cogeneration | 39 MW | 17.1 km |
| Aera San Ardo Cogen Facility | 3 MW | 17.3 km |
| Sutter Home Winery TCC | 1 MW | 19.2 km |
| Paso Robles - Municipal Airport | 3 MW | 26 km |
| Firestone Walker Brewery - Phase 1 | 2 MW | 28.3 km |