How big is Colorado Bend II?

Colorado Bend II has a reported capacity of 1,230.3 MW. Source: EIA Form 860.

What kind of plant is Colorado Bend II?

Colorado Bend II is a Natural Gas Fired Combined Cycle facility in Wharton County, TX, participating in the ERCOT market.

Where is Colorado Bend II located?

Colorado Bend II is in Wharton County, TX, inside the ERCOT balancing area.

Who operates Colorado Bend II?

Colorado Bend II is operated by Constellation Power, Inc according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does Colorado Bend II generate?

Colorado Bend II reported 6,536.8 GWh over the twelve months to 2026-04. Figures are net generation as filed to EIA-923.

Where does Colorado Bend II connect to the grid?

Colorado Bend II interconnects at Bailey Substation, on the CenterPoint Energy Houston Electric, LLC system.

How does Colorado Bend II compare to other plants?

By capacity, Colorado Bend II ranks #54 of 538 operating plants of the same technology nationally. It ranks #6 of 69 in TX.

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Natural Gas Fired Combined CycleERCOT · Wharton County

Colorado Bend II

Constellation Energy Generation, LLC · Wharton County · ERCOT

Colorado Bend II is a natural gas-fired power facility with 1,230.3 MW of EIA-reported nameplate capacity in Wharton County, Texas, registered as EIA Plant ID 60122. Constellation Energy Generation is the public owner or developer; Constellation Power, Inc is the registered plant entity or operator. Colorado Bend II is a large ERCOT combined-cycle facility whose air-cooled units use air rather than water for cooling, an important design feature for drought-prone Texas. Commercial operation began in June 2017.

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plant:plant-60122

Ask about Colorado Bend II

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

Overview

Key fields

Reported capacity: 1,230.3 MW
EIA-reported nameplate capacity; other nameplate and seasonal ratings may differ.
Technology: Natural Gas Fired Combined Cycle
Primary generation technology.
Registry anchor: Plant 60122
Constellation Power, Inc · Wharton County · ERCOT
Grid connection: Bailey Substation
345 kV · CenterPoint Energy Houston Electric, LLC
Commercial operation: June 2017
Best-supported operating milestone.
Project financing: $3.5B
On February 1, 2022, Constellation entered a $3.5 billion five-year revolving credit facility maturing February 1, 2027 at SOFR plus 1.275%; Colorado Bend II Power, LLC appears among the entities associated with the agreement.
Resource stack: 6 resources
CBECII_CC3_1 · CBECII_CC3_2

Infrastructure record

Mapped facility footprint: 28.99 mapped acres
Mapped infrastructure geometry associated with this asset.

Profile

Grid role: Operational thermal, gas-combined-cycle generation in ERCOT's South zone.
Grid connection: Bailey Substation · 345 kV · CenterPoint Energy Houston Electric, LLC.
Context: Colorado Bend II is a large ERCOT combined-cycle facility whose air-cooled units use air rather than water for cooling, an important design feature for drought-prone Texas. The plant ranked #16 among Texas power plants and #8 among Texas natural-gas plants by the cited generation measure.
Physical build: Colorado Bend II is a natural-gas combined-cycle facility comprising two GE 7HA.02 gas turbines rated at 360.9 MW each, one GE D600 steam turbine rated at 508.5 MW, and Alstom OCC Module Design heat-recovery steam generators. ERCOT identifies three installed thermal generator resources: CT7, CT8, and STG9, with nameplate capacities of 361 MW, 361 MW, and 509 MW, respectively.

Structured profile

Reported capacity: 1,230.3 MW
Natural Gas Fired Combined Cycle
Commercial operation: June 2017
Retirement: August 2, 2026
Colorado Bend II is currently operating; a closure or retirement is listed for August 2, 2026.
Interconnection: Bailey Substation
345 kV · CenterPoint Energy Houston Electric, LLC
Location

Units and generators

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

Generator	Capacity	Technology	Operation	Status
CT7	360.9 MW 329.3 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CT	Jun 2017	Operating
CT8	360.9 MW 335 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CT	Jun 2017	Operating
STG9	508.5 MW 478.4 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CA	Jun 2017	Operating

Performance

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

Peer context

Technology capacity: 1,230.3 MW
National rank: #54
TX rank: #6

Monthly generation

Download CSV

Latest 12 months

6.54 TWh

Reported net generation

Latest report

Apr 2026

EIA-923 monthly filing

2025 capacity factor

56.3%

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

CBECII_CC3·CBEC_CC1

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

HRSG Equipment Supply Contract

Nov 4, 2014

Alstom signed a contract worth approximately €90 million (over $100 million) with Exelon Generation to supply four HRSGs for Colorado Bend and Wolf Hollow plants. The disclosed value covers both plants and is not separately allocated per plant; therefore no exact Colorado Bend II USD amount is reported.

Alstom Power · Exelon Generation

Alstom to provide high efficiency Heat Recovery Steam Generators for two combined-cycle gas power plants in Texas | Alstom

Land and environmental record

Air Permit

Permit No. 119365

TCEQ AIR NEW SOURCE PERMITS; PERMIT; status ACTIVE

TCEQ AIR NEW SOURCE PERMITS: 119365

Air Permit

Permit No. 3849

TCEQ AIR OPERATING PERMITS; PERMIT; status PENDING

TCEQ AIR OPERATING PERMITS: 3849

Air Permit

Permit No. GHGPSDTX112

TCEQ AIR NEW SOURCE PERMITS; EPA PERMIT; status ACTIVE

TCEQ AIR NEW SOURCE PERMITS: GHGPSDTX112

Air Permit

Permit No. PSDTX1410

TCEQ AIR NEW SOURCE PERMITS; EPA PERMIT; status ACTIVE

TCEQ AIR NEW SOURCE PERMITS: PSDTX1410

Coordinate Parcel Id

2025

73961

TxGIO parcel intersecting the mapped EIA plant coordinate; parcel 73961; WHARTON APPRAISAL DISTRICT; tax year 2025

TxGIO land parcel 73961

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 / operatorEquipment

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

Jul 9, 2015
Jul 9, 2015
Construction GroundbreakingExelon Gene...
Exelon Generation broke ground on a new approximately 1,000 MW low-carbon combined-cycle gas turbine at the existing Colorado Bend generating station; commercial operation was expected in 2017.
Jun 2017

Reporting portfolio

EIA reporting entity

Constellation Power, Inc

Entity 6035

Operating portfolio

17 plants

4 states

Reported capacity

7,734.1 MW

Conventional Hydroelectric · Hydroelectric Pumped Storage · Natural Gas Fired Combined Cycle

Largest reported plants in this portfolio
Largest reported plants	Capacity	State
Handley	1,314.8 MW	TX
Wolf Hollow II	1,231.2 MW	TX
Colorado Bend IICurrent	1,230.3 MW	TX
Muddy Run	1,072 MW	PA
Eddystone Generating Station	861.6 MW	PA
Croydon CT Generating Station	546.4 MW	PA
Conowingo	530.8 MW	MD
Exelon West Medway II LLC	263.6 MW	MA

Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.

View full reporting portfolio

Ask about Colorado Bend II

Ask about Colorado Bend II

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

Transactions and agreements

Land and environmental record

Related parties and identifiers

Relationship graph

Timeline and sources

Project timeline

ERCOT disclosed dispatch

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

Latest disclosed outputhourly · 2 weeks ending Jun 4, 2026

Settlement price economics

Operating context

Nearby substations

Parties and identifiers

Reporting portfolio

Sources

Common questions about Colorado Bend II

How big is Colorado Bend II?

What kind of plant is Colorado Bend II?

Where is Colorado Bend II located?

Who operates Colorado Bend II?

How much electricity does Colorado Bend II generate?

Where does Colorado Bend II connect to the grid?

How does Colorado Bend II compare to other plants?

Co-located assets

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