AltaGas Ripon Energy Inc.
Natural gas power plant in San Joaquin County, California. 49.5 MW of nameplate capacity across 1 generator, operated by AltaGas Ripon Energy Inc..
Also known as AltaGas Ripon Energy · EIA plant 50299
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 49.5 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- April 1988First generator online
- Operator
- AltaGas Ripon Energy Inc.EIA operator ID 60134
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 1 CAISO nodeResource nodes with prices
- Location
- San Joaquin County, CA37.7325, −121.1160
- EIA plant ID
- 50299EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power AltaGas Ripon Energy produces
Free · EIA-923Net generation, 2025
920 MWh
920 MWh, final
Capacity factor, 2025
0.2%
2024: 0.5%
January to July 2026
1.41 GWh
Provisional
Range, 2015 to 2025
0.9–46.7
GWh a year. Low 2025, high 2015
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | 324,382 | Not reported | 12 of 12 |
| 2002 | 340,897 | Not reported | 12 of 12 |
| 2003 | 380,202 | Not reported | 12 of 12 |
| 2004 | 333,950 | Not reported | 12 of 12 |
| 2005 | 281,884 | Not reported | 12 of 12 |
| 2006 | 245,455 | Not reported | 12 of 12 |
| 2007 | 272,687 | Not reported | 12 of 12 |
| 2008 | 299,382 | Not reported | 12 of 12 |
| 2009 | 243,219 | Not reported | 12 of 12 |
| 2010 | 132,278 | 30.5% | 12 of 12 |
| 2011 | 118,564 | 27.3% | 12 of 12 |
| 2012 | 129,054 | 29.7% | 12 of 12 |
| 2013 | 116,824 | 26.9% | 12 of 12 |
| 2014 | 112,810 | 26.0% | 12 of 12 |
| 2015 | 46,707 | 10.8% | 12 of 12 |
| 2016 | 10,941 | 2.5% | 12 of 12 |
| 2017 | 19,296 | 4.4% | 12 of 12 |
| 2018 | 9,868 | 2.3% | 12 of 12 |
| 2019 | 5,377 | 1.2% | 12 of 12 |
| 2020 | 6,901 | 1.6% | 12 of 12 |
| 2021 | 4,329 | 1.0% | 12 of 12 |
| 2022 | 3,912 | 0.9% | 12 of 12 |
| 2023 | 3,090 | 0.7% | 12 of 12 |
| 2024 | 2,195 | 0.5% | 12 of 12 |
| 2025 | 920 | 0.2% | 12 of 12 |
| 2026 (provisional, partial year) | 1,407 | 0.6% | 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 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 |
|---|---|---|---|
| GEN1 | Natural Gas Fired Combustion Turbine | 49.5 | April 1988 |
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 AltaGas Ripon Energy Inc. 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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Questions about AltaGas Ripon Energy
How much power does AltaGas Ripon Energy Inc. produce?
AltaGas Ripon Energy Inc. reported 920 MWh (920 MWh) of net generation in 2025, a 0.2% capacity factor on 49.5 MW of nameplate capacity. From January to July 2026 it reported 1.41 GWh, which is provisional.
Where is AltaGas Ripon Energy Inc.?
AltaGas Ripon Energy Inc. is in San Joaquin County, California, at 37.7325, −121.1160. It is in the California Independent System Operator balancing area (CISO).
Who operates AltaGas Ripon Energy Inc.?
EIA-860M for August 2026 lists AltaGas Ripon Energy Inc. as the operator (EIA operator ID 60134). The operator is not always the owner.
When did AltaGas Ripon Energy Inc. start operating?
Its first generator began operating in April 1988, according to EIA-860M.
Does InfraMap have power prices for AltaGas Ripon Energy Inc.?
Yes. InfraMap has CAISO day-ahead and real-time prices at 1 price node linked to AltaGas Ripon Energy Inc., 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