Search
Search plants, projects, owners, and states
Search plants, projects, owners, and states
81.9 MW Hydro operating in Tuolumne, CA — California Independent System Operator
81.9 MW
Nameplate Capacity
1
Generators
unit
Conventional Hydroelectric
Technology
1963
Operating Since
Coordinates
38.1390, -120.3703
County
Tuolumne, CA
Nearby Plants
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Pacific Gas & Electric Co. | Pacific Gas and Electric | — |
| Owner(s) | Pacific Gas & Electric Co. | PG&E | — |
| Status | Operating | operating | — |
The Stanislaus hydroelectric plant is located in Tuolumne County, California. The plant, which began operating in 1963, has a total capacity of 81.9 MW from a single generator. It is owned and operated by Pacific Gas & Electric (PG&E). The plant utilizes conventional hydroelectric technology and its primary fuel source is water (WAT).
In the most recent year with available data, Stanislaus generated 268,818 MWh, achieving a capacity factor of 37.4%. The plant operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Stanislaus ranks as the 47th largest power plant in California out of 247, and 221st nationally out of 1464. Financial data indicates an installed cost of $879.58 per kW.
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
0 MWh
Latest Month
268.8K MWh
Annual Generation
37.4%
Capacity Factor
Hydro with storage · PACIFIC GAS AND ELECTRIC COMPANY · Data from 2015–2024
$926/kW
Installed Cost
$20.5/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Point of Interconnection
Nearest Substation
Stanislaus
Substation Distance
< 10 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
CAISO
LMP Node
STANISLS_7_B1
Pricing Hub
TH_NP15_GEN-APND
Location Type
Pricing Node
Node Source
EIA-860 direct report
Last updated 2026-03-26
View all articlesNo ask pi reports yet for this entity.
ask pi about StanislausCalifornia Independent System Operator (CISO)
Grid Voltage
115.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility