HydroOperatingCAISO

Nacimiento Hydro Project

Hydro power plant in San Luis Obispo County, California. 4.4 MW of nameplate capacity across 2 generators, operated by Monterey Cnty Water Res Agency.

Also known as EIA plant 50352

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Salinas River CogenerationSutter Home Winery TCCPaso Robles - Municipal AirportFirestone Walker Brewery - Phase 1Nacimiento Hydro Project10 km
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6 plants within 32 km, from EIA coordinates.

Key facts

Capacity
4.4 MWNameplate
Generators
2 operatingEIA-860M, August 2026
Operating since
July 1987First generator online
Operator
Monterey Cnty Water Res AgencyEIA operator ID 12850
Grid
CAISOBalancing authority CISO
Price nodes
1 CAISO nodeResource nodes with prices
Location
San Luis Obispo County, CA35.7986, −120.8833
EIA plant ID
50352EIA plant page

Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.

How much power Nacimiento Hydro Project produces

Free · EIA-923

Net generation, 2025

11.8 GWh

11,767 MWh, final

Capacity factor, 2025

30.5%

2024: 47.2%

January to July 2026

Not reported

Provisional. 0 of 7 months reported

Range, 2015 to 2025

0.6–18.6

GWh a year. Low 2015, high 2023

Annual net generation, GWhCapacity factor below each year
Annual net generation from EIA-923
YearNet generation, MWhCapacity factorMonths reported
2000Not reportedNot reported0 of 12
200115,492Not reported12 of 12
200211,866Not reported12 of 12
200314,494Not reported12 of 12
20046,598Not reported12 of 12
200519,854Not reported12 of 12
200615,648Not reported12 of 12
200714,792Not reported12 of 12
200814,316Not reported12 of 12
20099,858Not reported12 of 12
201012,20433.2%12 of 12
201117,68648.1%12 of 12
20129,012Not reported12 of 12
20133,0237.8%12 of 12
20149742.5%12 of 12
20156131.6%12 of 12
20161,0622.7%12 of 12
201717,55245.5%12 of 12
20188,10721.0%12 of 12
201913,21834.3%12 of 12
202011,67630.2%12 of 12
20213,90410.1%12 of 12
20226281.6%12 of 12
202318,60148.3%12 of 12
202418,22447.2%12 of 12
202511,76730.5%12 of 12
2026 (provisional, partial year)Not reportedNot reported0 of 7

* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.

Power prices and basis

Free account · CAISO

Emissions

Free · EPA CAMPD

No EPA emissions units are linked to this plant.

Water use

Free · EIA-923 cooling, USGS

No EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.

Generators

Free · EIA-860M
GeneratorTechnologyNameplate MWOnline since
1Conventional Hydroelectric4.0July 1987
2Conventional Hydroelectric0.4July 1987

Ownership and offtake

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Pro

Ownership and offtake are part of Pro

Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Monterey Cnty Water Res Agency as the operator, which is not always the owner.

Modeled data

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Power plants near Nacimiento Hydro Project

Questions about Nacimiento Hydro Project

How much power does Nacimiento Hydro Project produce?

Nacimiento Hydro Project reported 11,767 MWh (11.8 GWh) of net generation in 2025, a 30.5% capacity factor on 4.4 MW of nameplate capacity.

Where is Nacimiento Hydro Project?

Nacimiento Hydro Project is in San Luis Obispo County, California, at 35.7986, −120.8833. It is in the California Independent System Operator balancing area (CISO).

Who operates Nacimiento Hydro Project?

EIA-860M for August 2026 lists Monterey Cnty Water Res Agency as the operator (EIA operator ID 12850). The operator is not always the owner.

When did Nacimiento Hydro Project start operating?

Its first generator began operating in July 1987, according to EIA-860M.

Does InfraMap have power prices for Nacimiento Hydro Project?

Yes. InfraMap has CAISO day-ahead and real-time prices at 1 price node linked to Nacimiento Hydro Project, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.

Sources

  • EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
  • EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
  • CAISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05

Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page