Monticello Dam
Hydro power plant in Solano County, California. 11.5 MW of nameplate capacity across 3 generators, operated by Solano Irrigation District.
Also known as EIA plant 7646
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 11.5 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- June 1983First generator online
- Operator
- Solano Irrigation DistrictEIA operator ID 22776
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 1 CAISO nodeResource nodes with prices
- Location
- Solano County, CA38.5131, −122.1044
- EIA plant ID
- 7646EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Monticello Dam produces
Free · EIA-923Net generation, 2025
40.7 GWh
40,702 MWh, final
Capacity factor, 2025
40.4%
2024: 36.0%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
31.0–53.6
GWh a year. Low 2021, high 2017
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | 43,694 | Not reported | 12 of 12 |
| 2003 | 46,503 | Not reported | 12 of 12 |
| 2004 | 56,806 | Not reported | 12 of 12 |
| 2005 | 43,382 | Not reported | 12 of 12 |
| 2006 | 66,747 | Not reported | 12 of 12 |
| 2007 | 44,686 | Not reported | 12 of 12 |
| 2008 | 39,664 | Not reported | 12 of 12 |
| 2009 | 39,665 | Not reported | 12 of 12 |
| 2010 | 35,814 | 35.6% | 12 of 12 |
| 2011 | 26,842 | 26.6% | 12 of 12 |
| 2012 | 40,556 | 40.1% | 12 of 12 |
| 2013 | 43,108 | 42.8% | 12 of 12 |
| 2014 | 39,157 | Not reported | 12 of 12 |
| 2015 | 35,123 | 34.9% | 12 of 12 |
| 2016 | 34,959 | 34.6% | 12 of 12 |
| 2017 | 53,592 | 53.2% | 12 of 12 |
| 2018 | 32,913 | 32.7% | 12 of 12 |
| 2019 | 44,167 | 43.8% | 12 of 12 |
| 2020 | 42,147 | 41.7% | 12 of 12 |
| 2021 | 31,021 | 30.8% | 12 of 12 |
| 2022 | 35,187 | 34.9% | 12 of 12 |
| 2023 | 32,377 | 32.1% | 12 of 12 |
| 2024 | 36,386 | 36.0% | 12 of 12 |
| 2025 | 40,702 | 40.4% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · CAISOEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Conventional Hydroelectric | 5.0 | June 1983 |
| 2 | Conventional Hydroelectric | 5.0 | June 1983 |
| 3 | Conventional Hydroelectric | 1.5 | June 1983 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Solano Irrigation District as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
300 analyst questions a month, plus MCP
Query Monticello Dam and 14,224 other projects from Claude or your own tools. Free accounts get 1 question a day.
Power plants near Monticello Dam
Questions about Monticello Dam
How much power does Monticello Dam produce?
Monticello Dam reported 40,702 MWh (40.7 GWh) of net generation in 2025, a 40.4% capacity factor on 11.5 MW of nameplate capacity.
Where is Monticello Dam?
Monticello Dam is in Solano County, California, at 38.5131, −122.1044. It is in the California Independent System Operator balancing area (CISO).
Who operates Monticello Dam?
EIA-860M for August 2026 lists Solano Irrigation District as the operator (EIA operator ID 22776). The operator is not always the owner.
When did Monticello Dam start operating?
Its first generator began operating in June 1983, according to EIA-860M.
Does InfraMap have power prices for Monticello Dam?
Yes. InfraMap has CAISO day-ahead and real-time prices at 1 price node linked to Monticello Dam, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- CAISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page