How big is Coleto Creek?

Coleto Creek has a reported capacity of 622.4 MW. Source: EIA Form 860.

What kind of plant is Coleto Creek?

Coleto Creek is a Conventional Steam Coal facility in Goliad County, TX, participating in the ERCOT market.

Where is Coleto Creek located?

Coleto Creek is in Goliad County, TX, inside the ERCOT balancing area.

Who operates Coleto Creek?

Coleto Creek is operated by Coleto Creek Power LP according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does Coleto Creek generate?

Coleto Creek reported 2,919.1 GWh over the twelve months to 2026-04. Figures are net generation as filed to EIA-923.

Where does Coleto Creek connect to the grid?

Coleto Creek settles at COL_COLETOG1, interconnects at Coleto Creek Power Station / Coleto Creek station, on the South Texas Electric Cooperative (STEC) system.

How does Coleto Creek compare to other plants?

By capacity, Coleto Creek ranks #106 of 206 operating plants of the same technology nationally. It ranks #9 of 11 in TX.

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Conventional Steam CoalERCOT · Goliad County

Coleto Creek

Goliad County · ERCOT

Coleto Creek is a coal-fired power facility with 622.4 MW of EIA-reported nameplate capacity in Goliad County, Texas, registered as EIA Plant ID 6178. Coleto Creek is currently operating; coal operations are scheduled to cease by 2027, with repower the retiring coal facility on-site as a natural-gas-fueled dispatchable plant, with approximately 600–630 MW of capacity. The plant's generating configuration is one conventional steam coal generating unit (Generator 1), using subbituminous coal and an ST steam prime mover.

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plant:plant-6178

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Investigate technology, capacity, output, price behavior, ownership, and related facilities using this profile plus current grid data.

Overview

Key fields

Reported capacity: 622.4 MW
EIA-reported nameplate capacity; other nameplate and seasonal ratings may differ.
Technology: Conventional Steam Coal
Primary generation technology.
Registry anchor: Plant 6178
Goliad County · ERCOT
Operating status: Operating
Coleto Creek is currently operating; coal operations are scheduled to cease by 2027, with repower the retiring coal facility on-site as a natural-gas-fueled dispatchable plant, with approximately 600–630 MW of capacity.
Grid connection: Coleto Creek Power Station / Coleto Creek station
345 kV · South Texas Electric Cooperative (STEC)
Resource stack: 1 resource
COLETO_COLETOG1
Settlement point: COL_COLETOG1
ERCOT settlement point.

Infrastructure record

Operator: Coleto Creek Power LP
Mapped facility footprint: 1,329.22 mapped acres
Mapped infrastructure geometry associated with this asset.

Profile

Operating status: Coleto Creek is currently operating; coal operations are scheduled to cease by 2027, with repower the retiring coal facility on-site as a natural-gas-fueled dispatchable plant, with approximately 600–630 MW of capacity.
Grid role: Dispatchable thermal generation
Grid connection: Coleto Creek Power Station / Coleto Creek station · 345 kV · South Texas Electric Cooperative (STEC).
Physical build: One 622.4 MW coal-fired conventional steam unit, generator 1, commissioned in 1980, consisting of one reported 555 MW General Electric tandem-compound turbine/generator set powered by one Combustion Engineering tangential-fired dry-bottom boiler.

Structured profile

Reported capacity: 622.4 MW
Conventional Steam Coal
Operating status: operating
Coleto Creek is currently operating; coal operations are scheduled to cease by 2027, with repower the retiring coal facility on-site as a natural-gas-fueled dispatchable plant, with approximately 600–630 MW of capacity.
Retirement: 2027
Coleto Creek is currently operating; coal operations are scheduled to cease by 2027, with repower the retiring coal facility on-site as a natural-gas-fueled dispatchable plant, with approximately 600–630 MW of capacity.
Interconnection: Coleto Creek Power Station / Coleto Creek station
345 kV · South Texas Electric Cooperative (STEC)

Units and generators

Operating generator records and technology attributes reported through EIA-860.

Generator	Capacity	Technology	Operation	Status
1	622.4 MW 655 MW summer	Conventional Steam Coal Subbituminous Coal · ST	Jun 1980 Retirement: Dec 2027	Operating

Performance

Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.

Peer context

Technology capacity: 622.4 MW
National rank: #106
TX rank: #9

Monthly generation

Download CSV

Latest 12 months

2.92 TWh

Reported net generation

Latest report

Apr 2026

EIA-923 monthly filing

2025 capacity factor

56.8%

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

COL_COLETOG1

high confidence spatial and capacity match

Market resources

1 resource

Commercial, land, and environmental record

Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.

Financing

Planned Project Debt Financing

Dec 28, 2006

Goldman Sachs and Credit Suisse restructured and sweetened terms on a $1.17 billion term loan B intended to finance American National Power's planned acquisition of the Coleto Creek generation facility. Note: This transaction does not appear to have closed; International Power acquired Coleto Creek in July 2006.

$1.2BAmerican National Power · Goldman Sachs · Credit Suisse

Subject Section 106 Dear All, As 2006 approaches its close, I want to bring to your attention the following reports

Transactions and agreements

Asset Ownership Acquisition

Feb 2017

A subsidiary of Dynegy Inc. acquired all ownership interests in Coleto Creek Power LP as part of ENGIE's U.S. generation portfolio acquisition. No Coleto Creek-specific consideration disclosed.

Dynegy Inc. · Coleto Creek Power LP

~ > X E T ~

Land and environmental record

Air Permit Fuel Specifications

Feb 13, 2012

Permit 3687 and PSDTX9M1 apply to the Coleto Creek Power Station; solid fuels limited to specified coal or coal/petcoke blends with sulfur content ≤ 0.7% by weight

TCEQ and EPA permit records specify fuel quality limits including chlorine ≤ 0.1%, ash ≤ 20.8%, silica ≤ 65%, and total metals ≤ 0.25% by weight. No. 2 fuel oil authorized only during startup, shutdown, and flame stabilization.

Source

Air Permit

Permit No. 114970

TCEQ AIR NEW SOURCE PERMITS; REGISTRATION; status ACTIVE

TCEQ AIR NEW SOURCE PERMITS: 114970

Air Permit

Permit No. 173550

TCEQ AIR NEW SOURCE PERMITS; REGISTRATION; status ACTIVE

TCEQ AIR NEW SOURCE PERMITS: 173550

Air Permit

Permit No. 179653

TCEQ AIR NEW SOURCE PERMITS; REGISTRATION; status ACTIVE

TCEQ AIR NEW SOURCE PERMITS: 179653

Air Permit

Permit No. 25

TCEQ AIR OPERATING PERMITS; PERMIT; status PENDING

TCEQ AIR OPERATING PERMITS: 25

Mapped facility footprint

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 / operatorOrganizationFinancier

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

Jun 1980
Jun 1980
Generator enters operationEIA-860
EIA-860 lists generator 1 with this operating date.
Apr 20, 2006
Apr 20, 2006
Sale Agreement Announced

Ask about Coleto Creek

Ask about Coleto Creek

Overview

Key fields

Infrastructure record

Profile

Structured profile

Units and generators

Performance

Peer context

Monthly generation

Grid and market context

Market registration

Commercial, land, and environmental record

Financing

Transactions and agreements

Land and environmental record

Related parties and identifiers

Relationship graph

Timeline and sources

Project timeline

ERCOT disclosed dispatch

Generation

Output by hourlocal time · 90 days through Jun 4, 2026

Latest disclosed outputhourly · 2 weeks ending Jun 4, 2026

Settlement price economics

Operating context

Interconnection record

Nearby substations

Parties and identifiers

Reporting portfolio

Sources

Common questions about Coleto Creek

How big is Coleto Creek?

What kind of plant is Coleto Creek?

Where is Coleto Creek located?

Who operates Coleto Creek?

How much electricity does Coleto Creek generate?

Where does Coleto Creek connect to the grid?

How does Coleto Creek compare to other plants?

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