Rio Nogales Power Project — Plant Summary
- EIA Plant ID
- 55137
- Capacity
- 940.2 MW
- Primary Fuel
- Natural Gas
- Technology
- Natural Gas Fired Combined Cycle
- Status
- Operating
- Location
- Guadalupe, TX
- Operating Since
- 2002
- Generators
- 4
- Operator
- City of San Antonio - (TX)
- Parent Company
- —
- Annual Generation
- 4,144,951 MWh
- Capacity Factor
- 50.4%
- Balancing Authority
- Electric Reliability Council of Texas, Inc.
- ISO/RTO
- ERCOT
- NERC Region
- TRE
Rio Nogales Power Project
OperatingNatural Gas
Ranked #25 of 313 Natural Gas plants in TX#181 of 2009 nationally
940.2 MW Natural Gas operating in Guadalupe, TX — Electric Reliability Council of Texas, Inc.
EIAWD
940.2 MW
Nameplate Capacity
4
Generators
units
Natural Gas Fired Combined Cycle
Technology
2002
Operating Since
Location
Coordinates
29.5931, -97.9732
County
Guadalupe, TX
Nearby Plants
- Niagara Bottling - SeguinSolar4.9 MW · 0.6 km
- TP 4Hydro2.4 MW · 5.6 km
- Abbott TP 3Hydro2.8 MW · 6.5 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | City of San Antonio - (TX) | — | — |
| Owner(s) | City of San Antonio - (TX) | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
The Rio Nogales Power Project is a 940.2 MW natural gas-fired combined cycle power plant located in Guadalupe County, Texas. The plant began operating in 2002 and consists of four generators. It is owned and operated by the City of San Antonio. The plant is connected to the Electric Reliability Council of Texas (ERCOT) grid and falls within the TRE NERC region.
In the most recent year of reported data, the Rio Nogales Power Project generated 4,144,951 MWh of electricity, achieving a capacity factor of 50.4%. The plant ranks as the 26th largest in Texas out of 144 plants, and 186th nationally out of 945 plants.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
TRE
Balancing Authority
Electric Reliability Council of Texas, Inc.
Grid Voltage
345 kV
Regulatory Status
RE
Entity Type
Municipal
Sector
Electric Utility
Generation
249.4K MWh
Latest Month
4.1M MWh
Annual Generation
50.4%
Capacity Factor
Jan 2023 – Dec 2025
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Rio Nogales Switchyard · 345 kV
Substation Distance
< 10 km
Operator
CPS Energy
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ERCOT
LMP Node
RIONOG_ST1
Pricing Hub
HB_SOUTH
Secondary Zone
LZ_SOUTH
Location Type
Resource Node
Node Source
EIA-860 direct report
News & Articles (10)Beta
Industry·corporate
Market headwinds have stymied a Texas plan to boost natural gas
Legislators had to extend the deadline to spend a $5-billion fund for new gas power plants, while renewable projects race ahead.
Corporate Knights·6 months ago
Industry·corporate
Granite nabs first border wall job under Trump 2.0
The California builder will construct 7 miles of barrier in Hidalgo County, Texas, as part of a $70 million contract.
Granite (other)
Construction Dive·1 years ago
General
NORTH AMERICAN POWER PLANT - AIR EMISSIONS
No, Plant Name, Country, State /Province, Primary Fuel, Electricity Generation (MWh), Emission Rate (kg/MW-h), Total Emissions
Commission for Environmental Cooperation·1 years ago
Industry·corporate
The 4 biggest challenges San Antonio’s energy market is facing right now
From ensuring there is enough energy to power our quickly growing city, to physical shifts happening within the Texas grid, San Antonio's energy sector is...
San Antonio Report·1 years ago
Last updated 2026-03-14
View all 10 articles