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11.5 MW Hydro operating in Solano, CA
11.5 MW
Nameplate Capacity
3
Generators
units
Conventional Hydroelectric
Technology
1983
Operating Since
Coordinates
38.5131, -122.1044
County
Solano, CA
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Solano Irrigation District | — | — |
| Owner(s) | Solano Irrigation District | — | — |
| Status | Operating | — | — |
Monticello Dam is a 304-foot (93 m) high concrete arch dam in Napa County, California, United States, constructed between 1953 and 1957. The dam impounded Putah Creek to create Lake Berryessa in the Vaca Mountains.
Read more on WikipediaMonticello Dam is a hydroelectric power plant located in Solano County, California. The plant has a total capacity of 11.5 MW consisting of 3 generators and went into operation in 1983. The primary fuel source is water (WAT), and the plant utilizes conventional hydroelectric technology. The owner and operator is Solano Irrigation District.
The plant operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. In the most recent year with available data, Monticello Dam generated 36,386 MWh of electricity, achieving a capacity factor of 35.9%. Monticello Dam is ranked as the 114th largest power plant in California out of 247 plants, and 634th nationally out of 1464 plants.
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
Political Subdivision
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.
1.0K MWh
Latest Month
36.4K MWh
Annual Generation
35.9%
Capacity Factor
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2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $26.4M
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Point of Interconnection
Nearest Substation
Solano Irrigation Dist
Substation Distance
0.003 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
CAISO
LMP Node
MONTICLO_7_N002
Pricing Hub
TH_NP15_GEN-APND
Location Type
Pricing Node
Node Source
Curated node match
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 2026-03-26
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