Gianera
Natural gas power plant in Santa Clara County, California. 64.6 MW of nameplate capacity across 2 generators, operated by City of Santa Clara - (CA).
Also known as Gianera Power Plant · EIA plant 7231
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 64.6 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- June 1986First generator online
- Operator
- City of Santa Clara - (CA)EIA operator ID 16655
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 2 CAISO nodesResource nodes with prices
- Location
- Santa Clara County, CA37.4010, −121.9687
- EIA plant ID
- 7231EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Gianera produces
Free · EIA-923Net generation, 2025
15.1 GWh
15,060 MWh, final
Capacity factor, 2025
2.7%
2024: 1.1%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
0.2–15.1
GWh a year. Low 2015, high 2025
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 35,672 | Not reported | 12 of 12 |
| 2001 | 8,704 | Not reported | 12 of 12 |
| 2002 | 10,938 | Not reported | 12 of 12 |
| 2003 | 1,700 | Not reported | 11 of 12 |
| 2004 | 669 | Not reported | 12 of 12 |
| 2005 | 224 | Not reported | 12 of 12 |
| 2006 | 1,716 | Not reported | 12 of 12 |
| 2007 | 815 | Not reported | 12 of 12 |
| 2008 | 832 | Not reported | 12 of 12 |
| 2009 | 18 | Not reported | 12 of 12 |
| 2010 | 141 | 0.0% | 12 of 12 |
| 2011 | 88 | 0.0% | 12 of 12 |
| 2012 | 1,008 | 0.2% | 12 of 12 |
| 2013 | 952 | 0.2% | 12 of 12 |
| 2014 | 79 | 0.0% | 12 of 12 |
| 2015 | 221 | 0.0% | 12 of 12 |
| 2016 | 407 | 0.1% | 12 of 12 |
| 2017 | 5,495 | 1.0% | 12 of 12 |
| 2018 | 8,019 | 1.4% | 12 of 12 |
| 2019 | 4,574 | 0.8% | 12 of 12 |
| 2020 | 6,693 | 1.2% | 12 of 12 |
| 2021 | 6,646 | 1.2% | 12 of 12 |
| 2022 | 7,217 | 1.3% | 12 of 12 |
| 2023 | 9,873 | 1.7% | 12 of 12 |
| 2024 | 6,241 | 1.1% | 12 of 12 |
| 2025 | 15,060 | 2.7% | 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.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Natural Gas Fired Combustion Turbine | 32.3 | June 1987 |
| 2 | Natural Gas Fired Combustion Turbine | 32.3 | June 1986 |
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 City of Santa Clara - (CA) as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near Gianera
More plants operated by City of Santa Clara - (CA)
Questions about Gianera
How much power does Gianera produce?
Gianera reported 15,060 MWh (15.1 GWh) of net generation in 2025, a 2.7% capacity factor on 64.6 MW of nameplate capacity.
Where is Gianera?
Gianera is in Santa Clara County, California, at 37.4010, −121.9687. It is in the California Independent System Operator balancing area (CISO).
Who operates Gianera?
EIA-860M for August 2026 lists City of Santa Clara - (CA) as the operator (EIA operator ID 16655). The operator is not always the owner.
When did Gianera start operating?
Its first generator began operating in June 1986, according to EIA-860M.
Does InfraMap have power prices for Gianera?
Yes. InfraMap has CAISO day-ahead and real-time prices at 2 price nodes linked to Gianera, 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
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page