Don Pedro — Plant Summary
- EIA Plant ID
- 439
- Capacity
- 170.8 MW
- Primary Fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Status
- Operating
- Location
- Tuolumne, CA
- Operating Since
- 1971
- Generators
- 4
- Operator
- Turlock Irrigation District
- Parent Company
- Modesto Irrigation District
- Annual Generation
- 279,866 MWh
- Capacity Factor
- 18.6%
- Balancing Authority
- Turlock Irrigation District
- ISO/RTO
- —
- NERC Region
- WECC
Don Pedro
OperatingHydro
Ranked #19 of 247 Hydro plants in CA#113 of 1454 nationally
170.8 MW Hydro operating in Tuolumne, CA — Turlock Irrigation District
EIAGEMWD
170.8 MW
Nameplate Capacity
4
Generators
units
Conventional Hydroelectric
Technology
1971
Operating Since
Location
Coordinates
37.6960, -120.4202
County
Tuolumne, CA
Nearby Plants
- La GrangeHydro4.5 MW · 3.6 km
- Upper DawsonHydro4.4 MW · 6.7 km
- Moccasin Low Head Hydro ProjectHydro2.9 MW · 16.4 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Turlock Irrigation District | Turlock Irrigation District | — |
| Owner(s) | Modesto Irrigation District, Turlock Irrigation District | Modesto Irrigation District | — |
| Status | Operating | operating | — |
Ownership Chain
About
New Don Pedro Dam, often known simply as Don Pedro Dam, is an earthen embankment dam across the Tuolumne River, about 2 miles (3.2 km) northeast of La Grange, in Tuolumne County, California. The dam was completed in 1971, after four years of construction, to replace the 1924 concrete-arch Don Pedro Dam.
Read more on WikipediaThe Don Pedro Hydroelectric Plant is located in Tuolumne County, California. The plant has a total capacity of 170.8 MW across 4 generators, utilizing conventional hydroelectric technology and water (WAT) as its primary fuel source. It began operating in 1971. The plant is owned by Modesto Irrigation District and operated by Turlock Irrigation District, which also serves as the balancing authority. Don Pedro operates within the Western Electricity Coordinating Council (WECC) NERC region.
In the most recent year with available data, the plant generated 279,866 MWh of electricity, resulting in a capacity factor of 18.6%. Don Pedro ranks as the 19th largest hydroelectric plant out of 42 in California, and 113th out of 194 nationally.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Turlock Irrigation District
Grid Voltage
69 kV
Regulatory Status
RE
Entity Type
Political Subdivision
Sector
Electric Utility
Generation
24.1K MWh
Latest Month
279.9K MWh
Annual Generation
18.6%
Capacity Factor
Jan 2023 – Dec 2025
Financial Data
No financial data available for this plant.
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (9)Beta
Last updated 2026-03-26
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