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180.2 MW Hydro operating in Tuolumne, CA
180.2 MW
Nameplate Capacity
2
Generators
units
Conventional Hydroelectric
Technology
1960
Operating Since
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Request a demo →| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | City & County of San Francisco - (CA) | City & County of San Francisco | — |
| Owner(s) | City & County of San Francisco | City & County of San Francisco | — |
| Status | Operating | operating | — |
GEM identifies the owner as City & County of San Francisco
This entity is not yet in the GEM ownership database — chain unavailable.
Dion R Holm Generating Station is a 180.2 MW hydroelectric power plant located in Tuolumne County, California. The plant began operating in 1960 and utilizes conventional hydroelectric technology. It consists of 2 generators and is owned and operated by the City & County of San Francisco.
The plant's primary fuel source is water (WAT). In the most recent year of reported data, Dion R Holm generated 578,813 MWh of electricity, achieving a capacity factor of 36.9%. The plant operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Dion R Holm ranks as the 16th largest hydroelectric plant out of 42 in California, and 103rd out of 194 nationally.
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
California Independent System Operator (CISO)
Grid Voltage
230.0 kV
Regulatory Status
RE — Regulated
Entity Type
Municipal
Sector
Electric Utility
54.9K MWh
Latest Month
578.8K MWh
Annual Generation
36.9%
Capacity Factor
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$2,294/kW
Est. Construction Cost
Total estimated cost: $413.5M
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Nearest Substation
Early Intake Switchyard · 230 kV
Substation Distance
< 10 km
Operator
San Francisco Public Utilities Commission
Coord Source
OSM spatial
Market Position
ISO/RTO Market
CAISO
LMP Node
INTKEP_2_UNITS-APND
Pricing Hub
TH_NP15_GEN-APND
Location Type
Aggregated Node
Node Source
EIA-860 direct report
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