- Combustion
- Operating
- 10 · 100 · 1,000 MW
Map
- Combustion
- Operating
Sam Rayburn: location and 1 exact-grade project within 25 km. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Sam Rayburn
Power plant · Gas, combined cycle
Key facts
Power plant · Gas, combined cycleran 10% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1991
- Net generation, 2025
- 162,374 MWh
- Grid
- 138 kV to South Texas Electric Coop, Inc (ERCO)
- Location
- Victoria County, Texas
- Operated by
- South Texas Electric Cooperative IncSourceEIA-860M Preliminary Monthly Electric Generator Inventory
Output
- Gas
- Oil
Details
Who’s behind it
- Owner
- South Texas Electric Cooperative IncSource100.0%, EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT), as of 31 Dec 2023
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- Technology
- Gas, combined cycle source: “Natural Gas Fired Combined Cycle”
- Age
- 35 years since 1991
- Unused energy
- 1,527 GWh 2025Unused energyA lead, not a guarantee: MW × hours × (1 − capacity factor) for the latest year (EIA-923), gas, coal and oil plants only. Air-permit run-hour caps, heat rate (cost to run) and capacity-market or reliability obligations can rule it out.
- Heat rate
- 9,628 Btu/kWh 2025
All 6 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
| Attribute | Value |
|---|---|
| EPA greenhouse gas reporting (GHGRP) |
|
| Fuel burned (MMBtu), 2025 | 1,563,375 |
| Capacity factor, 2025 | 0.096 |
| Heat rate (Btu/kWh), 2025 | 9,628.2 |
| Net generation (MWh), 2025 | 162,374.0 |
| Balancing authority code | ERCO |
Retirement
EIA-860M September 2026StatusSome generators have retired; the rest of the plant is still in service. As of EIA-860M for September 2026.- Capacity retired
- 47.4 MW
- Generators retired
- 3
- Capacity still in service
- 192.8 MW
| Generator | Technology | Nameplate | State | Date |
|---|---|---|---|---|
| 3 | Natural Gas Steam Turbine | 25 MW | Retired | June 2012 |
| 1 | Natural Gas Fired Combustion Turbine | 11.2 MW | Retired | February 2021 |
| 2 | Natural Gas Fired Combustion Turbine | 11.2 MW | Retired | February 2021 |
By technology
| Technology | Retired | Scheduled to retire |
|---|---|---|
| Natural Gas Steam Turbine | 25 MW | |
| Natural Gas Fired Combustion Turbine | 22.4 MW |
Grid
EIA-860 2025Grid fieldsAs the plant reported them to EIA-860 for 2025 (Schedule 2).- Grid voltage at the plant
- 138 kV
- Transmission or distribution system owner
- South Texas Electric Coop, Inc
- Balancing authority
- Electric Reliability Council of Texas, Inc.
- NERC region
- TRE
Transmission lines within 25 km (10)
- 69 kV line (OSM way 515655204)
- 69 kV line (OSM way 515655206)
- 69 kV line (OSM way 515655213)
- 69 kV line (OSM way 515655201)
- 69 kV line (OSM way 515655200)
- 69 kV line (OSM way 515655209)
- 69 kV line (OSM way 515061664)
- 69 kV line (OSM way 515655199)
- 69 kV line (OSM way 515655197)
- 69 kV line (OSM way 515655198)
Can the connection be reused?
A plant that retires usually leaves its substation, transmission connection and interconnection agreement behind, and those may be reusable by a new project at the same site. FERC Order No. 845 lets an interconnection customer use surplus interconnection service at an existing site, and some transmission providers' tariffs let a replacement resource take over a retiring unit's interconnection service, usually within a set time after the retirement. Whether any such right still exists here, who holds it and on what terms depends on the owner, the transmission provider and timing; this page does not establish any of that.
Timeline
- Stated Units 1, 2 scheduled to retire, 22.4 MW · EIA-860M
- Stated Unit 3 scheduled to retire, 25 MW · EIA-860M
- In service · EIA-860M
Sources
5 sourcesSources EIA-860M · OpenStreetMap · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory · EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT)
© OpenStreetMap contributors
Sources
- EIA-860M Preliminary Monthly Electric Generator Inventory
- OpenStreetMap power network, US — transmission lines and cables (69 kV and up, or voltage not tagged) and substations, from Geofabrik's US state extracts© OpenStreetMap contributors. Power lines, cables and substations filtered and reshaped by Inframation from the OpenStreetMap elements in Overture Maps' base/infrastructure theme; this derived database is available under the Open Database License 1.0 as GeoParquet files at https://tiles.inframation.io/grid/osm-power/ (latest.json names the current version's files; licence: https://www.openstreetmap.org/copyright)
- EIA Open Data bulk file — Electricity (ELEC.zip; monthly plant net generation and fuel consumption since 2001)Source: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
- EIA-860M Preliminary Monthly Electric Generator Inventory
- EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT)
Around this plant
Nearby
within 25 km| Project | Kind | Away | MW |
|---|---|---|---|
| Oriana Solar LLC Postponed | Storage | 15.3 km | 61 |