Plant X
Natural gas power plant in Lamb County, Texas. 190.4 MW of nameplate capacity across 1 generator, operated by Southwestern Public Service Co.
Also known as EIA plant 3485
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 190.4 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- January 1964First generator online
- Operator
- Southwestern Public Service CoEIA operator ID 17718
- Grid
- SPPBalancing authority SWPP
- Price nodes
- 1 SPP nodeResource nodes with prices
- Location
- Lamb County, TX34.1661, −102.4114
- EIA plant ID
- 3485EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Plant X produces
Free · EIA-923Net generation, 2025
586 GWh
585,833 MWh, final
Capacity factor, 2025
35.1%
2024: 48.8%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
0.3–1.2
TWh a year. Low 2021, high 2018
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 864,583 | Not reported | 12 of 12 |
| 2001 | 1,012,660 | Not reported | 12 of 12 |
| 2002 | 835,626 | Not reported | 12 of 12 |
| 2003 | 1,104,058 | Not reported | 12 of 12 |
| 2004 | 1,472,421 | Not reported | 12 of 12 |
| 2005 | 1,155,146 | Not reported | 12 of 12 |
| 2006 | 1,267,765 | Not reported | 12 of 12 |
| 2007 | 1,320,583 | Not reported | 12 of 12 |
| 2008 | 1,003,677 | Not reported | 12 of 12 |
| 2009 | 960,609 | Not reported | 12 of 12 |
| 2010 | 1,047,553 | 27.5% | 12 of 12 |
| 2011 | 1,175,533 | 30.9% | 12 of 12 |
| 2012 | 1,546,095 | 40.5% | 12 of 12 |
| 2013 | 1,373,802 | 36.1% | 12 of 12 |
| 2014 | 1,160,700 | 30.5% | 12 of 12 |
| 2015 | 778,114 | 20.4% | 12 of 12 |
| 2016 | 626,281 | 16.4% | 12 of 12 |
| 2017 | 452,898 | 11.9% | 12 of 12 |
| 2018 | 1,221,177 | 32.1% | 12 of 12 |
| 2019 | 865,509 | 22.7% | 12 of 12 |
| 2020 | 917,026 | 24.0% | 12 of 12 |
| 2021 | 341,813 | 9.0% | 12 of 12 |
| 2022 | 504,995 | Not reported | 12 of 12 |
| 2023 | 660,298 | 22.4% | 12 of 12 |
| 2024 | 815,693 | 48.8% | 12 of 12 |
| 2025 | 585,833 | 35.1% | 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 · SPPEmissions
Free · EPA CAMPDCO₂, 2019
606,169
US short tons. 2018: 839,161
SO₂, 2019
3
US short tons
NOx, 2019
933
US short tons
CO₂ per MWh, calculated
0.70 t
About 1,401 lb per MWh
4 of 4 EPA units reported CO₂ in 2019 (111B, 112B, 113B, 114B), matched to EIA plant 3485 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
548
million gallons
Consumption, 2024
549
million gallons
Source
Wells
Ground, Fresh. Induced-draft tower
Watershed stress
Severe · 0.988
USGS SUI, HUC12 120500020411-Blackwater Draw
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 |
|---|---|---|---|
| 4 | Natural Gas Steam Turbine | 190.4 | January 1964 |
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 Southwestern Public Service Co 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.
300 analyst questions a month, plus MCP
Query Plant X and 14,224 other projects from Claude or your own tools. Free accounts get 1 question a day.
Power plants near Plant X
More plants operated by Southwestern Public Service Co
Questions about Plant X
How much power does Plant X produce?
Plant X reported 585,833 MWh (586 GWh) of net generation in 2025, a 35.1% capacity factor on 190.4 MW of nameplate capacity.
Where is Plant X?
Plant X is in Lamb County, Texas, at 34.1661, −102.4114. It is in the Southwest Power Pool balancing area (SWPP).
Who operates Plant X?
EIA-860M for August 2026 lists Southwestern Public Service Co as the operator (EIA operator ID 17718). The operator is not always the owner.
When did Plant X start operating?
Its first generator began operating in January 1964, according to EIA-860M.
Does InfraMap have power prices for Plant X?
Yes. InfraMap has SPP day-ahead and real-time prices at 1 price node linked to Plant X, 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)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- SPP day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- 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