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190.4 MW Natural Gas operating in Lamb, TX — Southwest Power Pool
190.4 MW
Nameplate Capacity
1
Generators
unit
Natural Gas Steam Turbine
Technology
1964
Operating Since
Coordinates
34.1661, -102.4114
County
Lamb, TX
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Southwestern Public Service Co | Southwestern Public Service | — |
| Owner(s) | Southwestern Public Service Co | Xcel Energy | — |
| Status | Operating | — | — |
Plant X is a steam–electric power plant located in the partially vegetated sandhills south of the West Texas town of Earth in Lamb County, Texas. It is owned and operated by Southwestern Public Service Company, a subsidiary of Xcel Energy.
Read more on WikipediaPlant X, located in Lamb County, Texas, is a 190.4 MW natural gas-fired power plant that began operating in 1964. The plant utilizes a single natural gas steam turbine generator. It is owned by Xcel Energy and operated by Southwestern Public Service Co, a subsidiary of Xcel. Plant X operates within the Southwest Power Pool (SPP) balancing authority and the Midcontinent Reliability Organization (MRO) NERC region.
In the most recent year with available data, Plant X generated 815,693 MWh of electricity, achieving a capacity factor of 48.7%. The plant's installed cost was $244.1 per kW, according to FERC data. Plant X is ranked 123rd out of 144 power plants in Texas and 761st out of 945 plants nationally.
Generated from EIA, GEM, and public data sources
ISO/RTO
SPP
Market
ISO/RTO Member
NERC Region
MRO — Midwest Reliability Organization
Balancing Authority
50.3K MWh
Latest Month
815.7K MWh
Annual Generation
48.7%
Capacity Factor
CO₂ Intensity
1280 lb/MWh
NOx
1 lb/MWh
SO₂
Steam turbine · Southwestern Public Service Company · Data from 2015–2024
$544/kW
Installed Cost
$1/kW
Annual CapEx
$11.4/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Point of Interconnection
Nearest Substation
Plant X Substation · 230 kV
Substation Distance
< 10 km
Operator
Southwestern Public Service Company
Coord Source
OSM spatial
Market Position
ISO/RTO Market
SPP
LMP Node
SPS.PLANTX4
Pricing Hub
SPP South Hub
Location Type
Settlement Location
Node Source
EIA-860 direct report
Last updated 2026-04-09
View all 8 articlesNo ask pi reports yet for this entity.
ask pi about Plant XSouthwest Power Pool (SWPP)
Grid Voltage
230.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
0.006 lb/MWh
CH₄
0.024 lb/MWh
N₂O
0.003 lb/MWh
Capacity Factor
22.4%
Annual Net Gen
660 GWh
CO₂eq
1281 lb/MWh
Subregion
SPP South