Afton Generating Station
Natural gas power plant in Dona Ana County, New Mexico. 287 MW of nameplate capacity across 2 generators, operated by Public Service Co of NM.
Also known as EIA plant 55210
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Key facts
- Capacity
- 287 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- November 2002First generator online
- Operator
- Public Service Co of NMEIA operator ID 15473
- Grid
- PNMBalancing authority PNM
- Price nodes
- None linkedNo verified ISO node
- Location
- Dona Ana County, NM32.1142, −106.8465
- EIA plant ID
- 55210EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Afton produces
Free · EIA-923Net generation, 2025
460 GWh
460,051 MWh, final
Capacity factor, 2025
18.3%
2024: 21.8%
January to July 2026
211 GWh
Provisional
Range, 2016 to 2025
0.4–1.4
TWh a year. Low 2017, high 2023
| 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 | 14,102 | Not reported | 8 of 12 |
| 2004 | 14,707 | Not reported | 12 of 12 |
| 2005 | 53,203 | Not reported | 12 of 12 |
| 2006 | 14,617 | Not reported | 12 of 12 |
| 2007 | 80,960 | Not reported | 12 of 12 |
| 2008 | 457,409 | Not reported | 7 of 12 |
| 2009 | 668,662 | Not reported | 12 of 12 |
| 2010 | 293,055 | 11.7% | 12 of 12 |
| 2011 | 291,352 | Not reported | 12 of 12 |
| 2012 | 468,702 | Not reported | 12 of 12 |
| 2013 | 699,673 | Not reported | 12 of 12 |
| 2014 | 500,279 | 29.6% | 8 of 12 |
| 2015 | 377,008 | 25.7% | 7 of 12 |
| 2016 | 598,085 | 23.7% | 12 of 12 |
| 2017 | 401,978 | 16.0% | 12 of 12 |
| 2018 | 815,872 | 32.5% | 12 of 12 |
| 2019 | 878,017 | 34.9% | 12 of 12 |
| 2020 | 909,329 | 36.1% | 12 of 12 |
| 2021 | 629,136 | 25.0% | 12 of 12 |
| 2022 | 843,976 | 33.6% | 12 of 12 |
| 2023 | 1,434,480 | 57.1% | 12 of 12 |
| 2024 | 549,898 | 21.8% | 12 of 12 |
| 2025 | 460,051 | 18.3% | 12 of 12 |
| 2026 (provisional, partial year) | 210,558 | 14.4% | 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
255,268
US short tons. 2024: 268,037
SO₂, 2025
1
US short tons
NOx, 2025
94
US short tons
CO₂ per MWh, calculated
0.55 t
About 1,110 lb per MWh
1 of 1 EPA units reported CO₂ in 2025 (1), matched to EIA plant 55210 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
41
million gallons
Consumption, 2024
41
million gallons
Source
Wells
Ground, Fresh. Hybrid induced-draft tower
Watershed stress
Severe · 0.901
USGS SUI, HUC12 Black Mountain
12 of 12 cooling months report withdrawal. Groundwater user; SUI describes surface water and is context only. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 0001 | Natural Gas Fired Combined Cycle | 177.0 | November 2002 |
| 0002 | Natural Gas Fired Combined Cycle | 110.0 | October 2007 |
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 Public Service Co of NM 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 Afton
More plants operated by Public Service Co of NM
Questions about Afton
How much power does Afton Generating Station produce?
Afton Generating Station reported 460,051 MWh (460 GWh) of net generation in 2025, a 18.3% capacity factor on 287 MW of nameplate capacity. From January to July 2026 it reported 211 GWh, which is provisional.
Where is Afton Generating Station?
Afton Generating Station is in Dona Ana County, New Mexico, at 32.1142, −106.8465. It is in the Public Service Company of New Mexico balancing area (PNM).
Who operates Afton Generating Station?
EIA-860M for August 2026 lists Public Service Co of NM as the operator (EIA operator ID 15473). The operator is not always the owner.
When did Afton Generating Station 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)
- 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