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170.8 MW Hydro operating in Tuolumne, CA — Turlock Irrigation District
170.8 MW
Nameplate Capacity
4
Generators
units
Conventional Hydroelectric
Technology
1971
Operating Since
Coordinates
37.6960, -120.4202
County
Tuolumne, CA
Nearby Plants
| 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 | — |
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
Grid Region
California (non-ISO)
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
24.1K MWh
Latest Month
279.9K MWh
Annual Generation
18.6%
Capacity Factor
2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $391.9M
This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
Last updated 2026-03-26
View all articlesNo ask pi reports yet for this entity.
ask pi about Don PedroTurlock Irrigation District (TIDC)
Grid Voltage
69.0 kV
Regulatory Status
RE — Regulated
Entity Type
Political Subdivision
Sector
Electric Utility