How big is Sam Rayburn?

Sam Rayburn has a reported capacity of 192.8 MW. Source: EIA Form 860.

What kind of plant is Sam Rayburn?

Sam Rayburn is a Natural Gas Fired Combined Cycle; Petroleum Liquids; facility in Victoria County, TX, participating in the ERCOT market.

Where is Sam Rayburn located?

Sam Rayburn is in Victoria County, TX, inside the ERCOT balancing area.

Who operates Sam Rayburn?

Sam Rayburn is operated by South Texas Electric Coop, Inc according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

When did Sam Rayburn start operating?

Sam Rayburn reports a commercial operation date of 2003. Current status: operating. Source: EIA Form 860.

How much electricity does Sam Rayburn generate?

Sam Rayburn reported 194 GWh over the twelve months to 2024-12. Figures are net generation as filed to EIA-923.

Where does Sam Rayburn connect to the grid?

Sam Rayburn on the South Texas Electric Coop Inc system.

How does Sam Rayburn compare to other plants?

By capacity, Sam Rayburn ranks #413 of 538 operating plants of the same technology nationally. It ranks #63 of 69 in TX.

Sam Rayburn — 193 MW gas plant, Victoria County, TX

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Sam Rayburn — 193 MW gas plant, Victoria County, TX · Ask the Grid

Overview

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

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Victoria

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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

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 CSV

Latest 12 months

194 GWh

Reported net generation

Latest report

Dec 2024

EIA-923 monthly filing

2024 capacity factor

11.5%

Using current reported nameplate capacity

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 disclosures

Settlement point

RAYBURN_CC1

high confidence spatial and capacity match

Market resources

3 resources

Commercial, 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

Plant Construction

1963

Sam Rayburn Power Plant constructed as first power generation facility for STEC.

South Texas Electric Cooperative, Inc.

Generation Resources – South Texas Electric Cooperative

Combined Cycle Completion

2003

3×1 dual-fuel combined-cycle unit completed 2003; provides 172 MW peaking-to-intermediate capacity.

172 MW contractedSouth Texas Electric Cooperative, Inc.

Generation Resources – South Texas Electric Cooperative

Land and environmental record

Coordinate Parcel Area

2025

72.45 Acres

TxGIO parcel intersecting the mapped EIA plant coordinate; parcel 31335; VICTORIA APPRAISAL DISTRICT; tax year 2025

TxGIO land parcel 31335

Coordinate Parcel Id

2025

31335

TxGIO parcel intersecting the mapped EIA plant coordinate; parcel 31335; VICTORIA APPRAISAL DISTRICT; tax year 2025

TxGIO land parcel 31335

Coordinate Parcel Market Value

2025

622880

TxGIO parcel intersecting the mapped EIA plant coordinate; parcel 31335; VICTORIA APPRAISAL DISTRICT; tax year 2025

TxGIO land parcel 31335

Coordinate Parcel Owner

2025

SOUTH TEXAS ELECTRIC COOP

TxGIO parcel intersecting the mapped EIA plant coordinate; parcel 31335; VICTORIA APPRAISAL DISTRICT; tax year 2025

TxGIO land parcel 31335

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.

AssetOwner / operatorRelated asset

Parties and identifiers

OrganizationRoleBasis

South Texas Electric Cooperative (STEC)

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

1963
1963
Construction / first commercial generationGeneration ...
Sam Rayburn Power Plant was constructed in 1963 and was STEC’s first power generation facility.
Mar 1963
Mar 1963
Generators enter operation

Reporting portfolio

EIA reporting entity

South Texas Electric Coop, Inc

Entity 17583

Operating portfolio

3 plants

1 states

Reported capacity

618.8 MW

Natural Gas Fired Combined Cycle · Natural Gas Internal Combustion Engine · Petroleum Liquids

Largest reported plants in this 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 portfolio

Overview

Profile

Structured profile

Related assets

Union Carbide Seadrift Cogen

Victoria

Units and generators

Performance

Peer context

Monthly generation

Grid and market context

Market registration

Commercial, land, and environmental record

Transactions and agreements

Land and environmental record

Related parties and identifiers

Relationship graph

Parties and identifiers

Timeline and sources

Project timeline

Decker Creek

Pearsall

Leon Creek

Winchester Power Park

ERCOT disclosed dispatch

Generation

Output by hourlocal time · 90 days through Jul 13, 2026

Latest disclosed outputhourly · 2 weeks ending Jul 13, 2026

Settlement price economics

Operating context

Nearby substations

Reporting portfolio

Sources

Common questions about Sam Rayburn

How big is Sam Rayburn?

What kind of plant is Sam Rayburn?

Where is Sam Rayburn located?

Who operates Sam Rayburn?

When did Sam Rayburn start operating?

How much electricity does Sam Rayburn generate?

Where does Sam Rayburn connect to the grid?

How does Sam Rayburn compare to other plants?

Co-located assets