Sam Rayburn
South Texas Electric Cooperative (STEC) · Victoria County · ERCOT
Sam Rayburn is a natural gas-fired power facility with 184.8 MW of EIA-reported operating capacity in Victoria County, Texas, registered as EIA Plant ID 3631. South Texas Electric Cooperative (STEC) is the public owner or developer; South Texas Electric Coop, Inc is the registered plant entity or operator. Sam Rayburn Power Plant was the first power generation facility built by South Texas Electric Cooperative (STEC), constructed in 1963 (STEC site). The plant began commercial operation in 2003.
Overview
Key fields
- Reported capacity
- 184.8 MW
EIA-reported operating capacity; nameplate, seasonal, AC/DC, and unit ratings may differ.
- Technology
- Natural Gas Fired Combined Cycle; Petroleum Liquids.
Primary generation technology.
- Registry anchor
- Plant 3631
South Texas Electric Coop, Inc · Victoria County · ERCOT
- Operating status
- Operating
Sam Rayburn is currently operating.
- Commercial operation
- 2003
Best-supported operating milestone.
Resource stack
- 3 resources
RAYBURN_CC1_1 · RAYBURN_CC1_2
Profile
- Operating status
- Sam Rayburn is currently operating.
- Context
- STEC says the original Sam Rayburn Power Plant was its first generation facility, constructed in 1963; the current combined-cycle addition is separately documented as entering commercial operation in 2003.
Structured profile
- Commercial operation
- 2003
- Operating status
- operating
Sam Rayburn is currently operating.
- Location
- Victoria County
ERCOT
- Operator
- South Texas Electric Coop, Inc
- Asset role
- natural gas
ERCOT · Victoria County
- Owner
- South Texas Electric Cooperative (STEC)
The South Texas Electric Cooperative (STEC) is named on the cooperative's generation-resources page describing Sam Rayburn; independent energy directories also attribute the facility to South Texas Electric.
Units and generators
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 1 | 11.2 MW 10.5 MW summer | Natural Gas Fired Combustion Turbine Natural Gas · GT | Mar 1963 Retirement: Feb 2021 | Operating |
| 10 | 42 MW 37 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CA | Oct 2003 | Operating |
| 2 | 11.2 MW 10.5 MW summer | Natural Gas Fired Combustion Turbine Natural Gas · GT | Mar 1963 Retirement: Feb 2021 | Operating |
| 3 | 25 MW 22 MW summer | Natural Gas Steam Turbine Natural Gas · ST | Jul 1965 | Operating |
| 4 | 1.6 MW 0.9 MW summer | Petroleum Liquids Disillate Fuel Oil · IC | Jul 1991 | Operating |
| 5 | 1.6 MW 0.9 MW summer | Petroleum Liquids Disillate Fuel Oil · IC | Oct 1991 | Operating |
| 7 | 49.2 MW 49 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CT | Oct 2003 | Operating |
| 8 | 49.2 MW 49 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CT | Oct 2003 | Operating |
| 9 | 49.2 MW 48 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CT | Oct 2003 | Operating |
Performance
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Peer context
- Technology capacity
- 189.6 MW
- National rank
- #413
- TX rank
- #63
Monthly generation
Download CSVMonthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
ERCOT disclosed dispatch
3 ERCOT market resources · Combined-cycle gas
Generation
3 mo through May 22, 2026Capacity factor is average output vs. this plant's observed peak.
Output by hourlocal time · 90 days through May 22, 2026
Latest disclosed outputhourly · 2 weeks ending May 22, 2026
Generation from ERCOT's 60-Day SCED Disclosure (≈60-day lag), summed over this site's market resources.
Grid and market context
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Market registration
ERCOT public disclosuresOperating context
ERCOT market recordsNearby substations
HIFLD infrastructure inventoryCommercial, land, and environmental record
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Transactions and agreements
Land and environmental record
Related parties and identifiers
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Relationship graph
Drag organizations to explore the network. Select a node to pin its details and available page link.
Parties and identifiers
| Relationship | Entity | Basis |
|---|---|---|
| Operator | Owner / developer associated with Sam Rayburn. | |
| Market resources | RAYBURN_CC1_1, RAYBURN_CC1_2, RAYBURN_CC1_3 | Linked ERCOT resources. |
| Grid selection | plant:plant-3631 | Canonical asset page /ercot/assets/plant/sam-rayburn. |
Reporting portfolio
| Largest reported plants | Capacity | State |
|---|---|---|
| Red Gate Power Plant | 224.4 MW | TX |
| Pearsall | 201.6 MW | TX |
| Sam RayburnCurrent | 192.8 MW | TX |
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
View full reporting portfolioTimeline and sources
Project milestones and public references behind the asset profile.
Project timeline
- Construction / first commercial generationGeneration ...
Sam Rayburn Power Plant was constructed in 1963 and was STEC’s first power generation facility.
- Generators enter operationEIA-860
EIA-860 lists generator 1, generator 2 with this operating date.
- Generator enters operationEIA-860
EIA-860 lists generator 3 with this operating date.
- Generator enters operationEIA-860
EIA-860 lists generator 4 with this operating date.
- Generator enters operationEIA-860
EIA-860 lists generator 5 with this operating date.
- Commercial OperationGeneration ...
Sam Rayburn entered commercial operation.
- Generators enter operationEIA-860
EIA-860 lists generator 10, generator 7, generator 8, generator 9 with this operating date.
- Planned generator retirementEIA-860
EIA-860 lists a planned retirement for generator 1, generator 2.
- Latest disclosed generation interval
ERCOT SCED disclosure is delayed, so plant performance windows end at the latest disclosed interval.
Sources
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