Cogeneration 1
Natural gas power plant in Pima County, Arizona. 9 MW of nameplate capacity across 1 generator, operated by University of Arizona.
Also known as EIA plant 56229
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 9 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- November 2002First generator online
- Operator
- University of ArizonaEIA operator ID 49913
- Grid
- TEPCBalancing authority TEPC
- Price nodes
- None linkedNo verified ISO node
- Location
- Pima County, AZ32.2299, −110.9528
- EIA plant ID
- 56229EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Cogeneration 1 produces
Free · EIA-923Net generation, 2025
48.3 GWh
48,269 MWh, final
Capacity factor, 2025
61.2%
2024: 68.9%
January to July 2026
31.2 GWh
Provisional
Range, 2015 to 2025
48.3–56.4
GWh a year. Low 2025, high 2020
| 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 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | 51,028 | Not reported | 12 of 12 |
| 2005 | 53,993 | Not reported | 12 of 12 |
| 2006 | 54,289 | Not reported | 12 of 12 |
| 2007 | 54,083 | Not reported | 12 of 12 |
| 2008 | 54,030 | Not reported | 12 of 12 |
| 2009 | 55,460 | Not reported | 12 of 12 |
| 2010 | 56,308 | 71.4% | 12 of 12 |
| 2011 | 49,590 | 62.9% | 12 of 12 |
| 2012 | 57,959 | 73.3% | 12 of 12 |
| 2013 | 57,545 | 73.0% | 12 of 12 |
| 2014 | 47,690 | 60.5% | 12 of 12 |
| 2015 | 51,170 | 64.9% | 12 of 12 |
| 2016 | 54,338 | 68.7% | 12 of 12 |
| 2017 | 55,283 | 70.1% | 12 of 12 |
| 2018 | 56,089 | 71.1% | 12 of 12 |
| 2019 | 55,890 | 70.9% | 12 of 12 |
| 2020 | 56,413 | 71.4% | 12 of 12 |
| 2021 | 50,731 | 70.3% | 11 of 12 |
| 2022 | 53,650 | 68.0% | 12 of 12 |
| 2023 | 54,148 | 68.7% | 12 of 12 |
| 2024 | 54,472 | 68.9% | 12 of 12 |
| 2025 | 48,269 | 61.2% | 12 of 12 |
| 2026 (provisional, partial year) | 31,157 | 68.0% | 7 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 accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
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 |
|---|---|---|---|
| CT1 | Natural Gas Fired Combined Cycle | 9.0 | November 2002 |
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 University of Arizona 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 Cogeneration 1
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Questions about Cogeneration 1
How much power does Cogeneration 1 produce?
Cogeneration 1 reported 48,269 MWh (48.3 GWh) of net generation in 2025, a 61.2% capacity factor on 9 MW of nameplate capacity. From January to July 2026 it reported 31.2 GWh, which is provisional.
Where is Cogeneration 1?
Cogeneration 1 is in Pima County, Arizona, at 32.2299, −110.9528. It is in the Tucson Electric Power Company balancing area (TEPC).
Who operates Cogeneration 1?
EIA-860M for August 2026 lists University of Arizona as the operator (EIA operator ID 49913). The operator is not always the owner.
When did Cogeneration 1 start operating?
Its first generator began operating in November 2002, according to EIA-860M.
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)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page