Search
Search plants, projects, owners, and states
Search plants, projects, owners, and states
103.6 MW Hydro operating in Tuolumne, CA
103.6 MW
Nameplate Capacity
2
Generators
units
Conventional Hydroelectric
Technology
1969
Operating Since
Coordinates
37.8094, -120.2993
County
Tuolumne, CA
Nearby Plants
Forward-looking, asset-specific exposure analytics combining climate hazards, generation variability, and counterparty risk into a single decision-grade view. Powered by InfraRisk.
See the full risk decomposition + scenarios for this asset.
| 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.
Moccasin is a 96.8 MW hydroelectric power plant located in Tuolumne County, California. The plant began operating in 1969 and consists of two generators utilizing conventional hydroelectric technology. It is owned and operated by the City & County of San Francisco. Moccasin is connected to the California Independent System Operator (CAISO) balancing authority and resides within the Western Electricity Coordinating Council (WECC) NERC region.
In the most recent year of reported data, Moccasin generated 276,555 MWh of electricity, achieving a capacity factor of 32.5%. The plant is the 44th largest in California out of 247 facilities and ranks 198th nationally out of 1464 power plants. Its primary fuel source is water (WAT).
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
115.0 kV
Regulatory Status
RE — Regulated
Entity Type
Municipal
Sector
Electric Utility
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
5.4K MWh
Latest Month
276.6K MWh
Annual Generation
32.5%
Capacity Factor
Forward-looking generation outlook with probabilistic ranges across weather, demand, and policy scenarios. Powered by InfraSure's generation modeling stack.
See the full forecast + scenario decomposition for this asset.
2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $237.7M
Forward revenue, DSCR bands, and refinancing risk projected under price, demand, and policy scenarios. Powered by InfraSure's asset cashflow stack.
See the full revenue + DSCR projection for this asset.
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
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
Last updated 2026-03-14
View all articlesNo Ask reports yet for this entity.
Ask about MoccasinForward forecasts, scenario decomposition, and risk-decision tooling for this asset.