Monticello Dam — Plant Summary
- EIA Plant ID
- 7646
- Capacity
- 11.5 MW
- Primary Fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Status
- Operating
- Location
- Solano, CA
- Operating Since
- 1983
- Generators
- 3
- Operator
- Solano Irrigation District
- Parent Company
- —
- Annual Generation
- 36,386 MWh
- Capacity Factor
- 35.9%
- Balancing Authority
- California Independent System Operator
- ISO/RTO
- CAISO
- NERC Region
- WECC
Monticello Dam
OperatingHydro
Ranked #113 of 247 Hydro plants in CA#622 of 1454 nationally
11.5 MW Hydro operating in Solano, CA — California Independent System Operator
EIAWD
11.5 MW
Nameplate Capacity
3
Generators
units
Conventional Hydroelectric
Technology
1983
Operating Since
Location
Coordinates
38.5131, -122.1044
County
Solano, CA
Nearby Plants
- Putah Creek Solar FarmSolar2 MW · 9.6 km
- Putah Creek Solar Farm NorthSolar3 MW · 9.7 km
- VacavilleSolar1 MW · 17.8 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Solano Irrigation District | — | — |
| Owner(s) | Solano Irrigation District | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
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
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
California Independent System Operator
Grid Voltage
115 kV
Regulatory Status
RE
Entity Type
Political Subdivision
Sector
Electric Utility
Generation
1.0K MWh
Latest Month
36.4K MWh
Annual Generation
35.9%
Capacity Factor
Jan 2022 – Dec 2024
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidencePoint 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
News & Articles (10)Beta
General
Vacaville, Fairfield release water reports
Both Vacaville and Fairfield released their 2024 Water Quality Reports this week, updating residents on contaminants in their water supply.
The Vacaville Reporter·8 months ago
General
Lake Berryessa Glory Hole Spills Over: Photos Of The Day
NAPA COUNTY, CA — Benicia resident Susan Arnett captured these images of the Lake Berryessa "Glory Hole" near the Monticello Dam.
Patch·1 years ago
General
Northern California’s famed ‘Glory Hole’ spillway is used for first time in years
The unique water management design will probably remain active for several weeks. 'It's definitely worth seeing,' one official said.
Los Angeles Times·1 years ago
Hazards·flooding
Monticello Dam: Plughole-like whirlpool creates mesmerising display
A drainage pipe at a reservoir in Northern California has been activated for the first time in six years, creating a mesmerising whirlpool which resembles a...
Monticello Dam (operator)California (other)
BBC·1 years ago
Last updated 2026-03-14
View all 10 articles