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892 MW Natural Gas operating in Bexar, TX
892 MW
Nameplate Capacity
2
Generators
units
Natural Gas Steam Turbine
Technology
1972
Operating Since
Coordinates
29.3081, -98.3242
County
Bexar, TX
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | City of San Antonio - (TX) | — | — |
| Owner(s) | City of San Antonio - (TX) | — | — |
| Status | Operating | — | — |
The O W Sommers power plant is located in Bexar County, Texas. The plant has a total capacity of 892 MW across two generators utilizing natural gas steam turbine technology. It began operating in 1972 and is owned and operated by City of San Antonio - (TX). The plant operates within the Electric Reliability Council of Texas (ERCOT) balancing authority.
In the most recent year of data, O W Sommers generated 2,533,074 MWh of electricity, achieving a capacity factor of 32.3%. The plant is ranked as the 35th largest in Texas out of 144 plants, and nationally it is ranked 213th out of 945 plants.
Generated from EIA, GEM, and public data sources
ISO/RTO
ERCOT
Market
ISO/RTO Member
NERC Region
TRE — Texas Reliability Entity
Balancing Authority
Electric Reliability Council of Texas, Inc. (ERCO)
Grid Voltage
138.0 kV
Regulatory Status
RE — Regulated
Entity Type
Municipal
Sector
Electric Utility
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
187.2K MWh
Latest Month
2.5M MWh
Annual Generation
32.3%
Capacity Factor
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CO₂ Intensity
1304 lb/MWh
NOx
2 lb/MWh
SO₂
0.007 lb/MWh
CH₄
0.024 lb/MWh
N₂O
0.002 lb/MWh
Capacity Factor
24.4%
Annual Net Gen
1905 GWh
CO₂eq
1305 lb/MWh
Subregion
ERCOT All
2013
$965/kW
Est. Construction Cost
Total estimated cost: $860.9M
Forward revenue, DSCR bands, and refinancing risk projected under price, demand, and policy scenarios. Powered by InfraSure's asset cashflow stack.
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Point of Interconnection
Nearest Substation
O. W. Sommers Switchyard · 138 kV
Substation Distance
< 10 km
Operator
CPS Energy
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ERCOT
LMP Node
CALAVER_OWS1
Pricing Hub
HB_SOUTH
Alt. Hub / Zone
LZ_SOUTH
Location Type
Resource Node
Node Source
EIA-860 direct report
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
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Forward forecasts, scenario decomposition, and risk-decision tooling for this asset.