Walnut Energy Center
Natural gas power plant in Stanislaus County, California. 300.6 MW of nameplate capacity across 3 generators, operated by Turlock Irrigation District.
Also known as EIA plant 56078
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Key facts
- Capacity
- 300.6 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- February 2006First generator online
- Operator
- Turlock Irrigation DistrictEIA operator ID 19281
- Grid
- TIDCBalancing authority TIDC
- Price nodes
- None linkedNo verified ISO node
- Location
- Stanislaus County, CA37.4878, −120.8956
- EIA plant ID
- 56078EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Walnut produces
Free · EIA-923Net generation, 2025
1.60 TWh
1,604,800 MWh, final
Capacity factor, 2025
60.9%
2024: 57.8%
January to July 2026
757 GWh
Provisional
Range, 2015 to 2025
1.0–1.6
TWh a year. Low 2019, high 2025
| 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 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | 954,467 | Not reported | 11 of 12 |
| 2007 | 1,356,665 | Not reported | 12 of 12 |
| 2008 | 1,577,680 | Not reported | 12 of 12 |
| 2009 | 1,523,778 | Not reported | 12 of 12 |
| 2010 | 1,536,662 | 58.4% | 12 of 12 |
| 2011 | 1,117,470 | 42.4% | 12 of 12 |
| 2012 | 1,464,475 | 55.5% | 12 of 12 |
| 2013 | 1,409,497 | Not reported | 12 of 12 |
| 2014 | 1,468,675 | 55.8% | 12 of 12 |
| 2015 | 1,576,127 | 59.9% | 12 of 12 |
| 2016 | 1,205,595 | 45.7% | 12 of 12 |
| 2017 | 1,124,233 | 42.7% | 12 of 12 |
| 2018 | 1,229,721 | 46.7% | 12 of 12 |
| 2019 | 1,044,133 | 39.7% | 12 of 12 |
| 2020 | 1,252,614 | 47.4% | 12 of 12 |
| 2021 | 1,163,356 | 44.2% | 12 of 12 |
| 2022 | 1,466,997 | 55.7% | 12 of 12 |
| 2023 | 1,566,082 | 59.5% | 12 of 12 |
| 2024 | 1,524,951 | 57.8% | 12 of 12 |
| 2025 | 1,604,800 | 60.9% | 12 of 12 |
| 2026 (provisional, partial year) | 757,268 | 49.5% | 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 CAMPDCO₂, 2025
802,268
US short tons. 2024: 759,966
SO₂, 2025
4
US short tons
NOx, 2025
48
US short tons
CO₂ per MWh, calculated
0.50 t
About 1,000 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (1, 2), matched to EIA plant 56078 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
324
million gallons
Consumption, 2024
324
million gallons
Source
Reclaimed Water
Discharge, Reclaimed. Induced-draft tower
Watershed stress
High · 0.740
USGS SUI, HUC12 Pear Slough-San Joaquin River
12 of 12 cooling months report withdrawal. Reclaimed water or plant effluent; not tested. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Natural Gas Fired Combined Cycle | 94.9 | February 2006 |
| 2 | Natural Gas Fired Combined Cycle | 94.9 | February 2006 |
| 3 | Natural Gas Fired Combined Cycle | 110.8 | February 2006 |
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 Turlock Irrigation District 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 Walnut
More plants operated by Turlock Irrigation District
Questions about Walnut
How much power does Walnut Energy Center produce?
Walnut Energy Center reported 1,604,800 MWh (1.60 TWh) of net generation in 2025, a 60.9% capacity factor on 300.6 MW of nameplate capacity. From January to July 2026 it reported 757 GWh, which is provisional.
Where is Walnut Energy Center?
Walnut Energy Center is in Stanislaus County, California, at 37.4878, −120.8956. It is in the Turlock Irrigation District balancing area (TIDC).
Who operates Walnut Energy Center?
EIA-860M for August 2026 lists Turlock Irrigation District as the operator (EIA operator ID 19281). The operator is not always the owner.
When did Walnut Energy Center start operating?
Its first generator began operating in February 2006, 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)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page