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989 MW Natural Gas operating in Hays, TX
989 MW
Nameplate Capacity
4
Generators
units
Natural Gas Fired Combined Cycle
Technology
2002
Operating Since
Coordinates
29.7806, -97.9894
County
Hays, TX
Nearby Plants
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Request a demo →| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Hays Energy, LLC | Hays Energy | — |
| Owner(s) | Hays Energy, LLC | Vistra | — |
| Status | Operating | — | — |
The Hays Energy Project is a 989 MW natural gas-fired combined cycle power plant located in Hays County, Texas. The plant began operating in 2002 and consists of 4 generators. It is owned by Vistra and operated by Hays Energy, LLC. The plant is interconnected to the Electric Reliability Council of Texas, Inc. (ERCOT) balancing authority.
In the most recent year of reported data, the Hays Energy Project generated 5,338,430 MWh of electricity, achieving a capacity factor of 61.5%. The plant ranks as the 25th largest in Texas out of 144 plants, and 174th nationally 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
345.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
374.9K MWh
Latest Month
5.3M MWh
Annual Generation
61.5%
Capacity Factor
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Request a demo →CO₂ Intensity
896 lb/MWh
NOx
0.097 lb/MWh
SO₂
0.005 lb/MWh
CH₄
0.017 lb/MWh
N₂O
0.002 lb/MWh
Capacity Factor
54.2%
Annual Net Gen
4692 GWh
CO₂eq
897 lb/MWh
Subregion
ERCOT All
2013
$965/kW
Est. Construction Cost
Total estimated cost: $954.5M
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Request a demo →Point of Interconnection
Nearest Substation
Hays Energy Station · 345 kV
Substation Distance
< 10 km
Operator
Lower Colorado River Authority
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ERCOT
LMP Node
HAYSEN_HAYSENG3
Pricing Hub
HB_SOUTH
Node Source
EIA-860 direct report
Last updated 2026-03-26
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