How big is Cedar Bayou?

Cedar Bayou has a reported capacity of 1,530 MW. Source: EIA Form 860.

What kind of plant is Cedar Bayou?

Cedar Bayou is a Natural Gas Steam Turbine facility in Chambers County, TX, participating in the ERCOT market.

Where is Cedar Bayou located?

Cedar Bayou is in Chambers County, TX, inside the ERCOT balancing area.

Who operates Cedar Bayou?

Cedar Bayou is operated by NRG Texas Power LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

When did Cedar Bayou start operating?

Cedar Bayou reports a commercial operation date of 1970-1972. Current status: operating. Source: EIA Form 860.

How much electricity does Cedar Bayou generate?

Cedar Bayou reported 2,371.4 GWh over the twelve months to 2026-06. Figures are net generation as filed to EIA-923.

Where does Cedar Bayou connect to the grid?

Cedar Bayou settles at CBY_CBY_G1, interconnects at Cedar Bayou.

How does Cedar Bayou compare to other plants?

By capacity, Cedar Bayou ranks #11 of 257 operating plants of the same technology nationally. It ranks #2 of 32 in TX.

Cedar Bayou — 1,530 MW gas plant, Chambers County, TX

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Cedar Bayou — 1,530 MW gas plant, Chambers County, TX · Ask the Grid

Overview

Net summer capability: 1,495 MW
EIA operating capability.
Nameplate capacity: 1,530 MW
Two EIA steam generators.
Technology: Natural-gas steam
Two conventional steam units.
Registry anchor: Plant 3460
NRG Texas Power LLC · Chambers County · ERCOT
Resource in-service: 1970 / 1972
CBY_CBY_G1 / CBY_CBY_G2.
Resource stack: 2 resources
CBY_CBY_G1 · CBY_CBY_G2

Infrastructure record

Operator: NRG Texas Power LLC

Profile

ERCOT configuration: Two operating steam resources, CBY_CBY_G1 and CBY_CBY_G2, in the Houston zone.
Current ownership: NRG Energy reports 100% ownership; NRG Texas Power LLC is the EIA registered operator.
Site boundaries: Cedar Bayou 4 and Cedar Bayou 5 occupy the broader generation site but are not part of EIA Plant 3460.

Structured profile

Net summer / winter: 1,495 / 1,495 MW
EIA Form 860
Owner: NRG Energy
100% reported ownership
Registered operator: NRG Texas Power LLC
EIA Plant 3460
TCEQ regulated entity: RN100825371
Cedar Bayou site complex
Coordinate parcel

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Units and generators

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

Generator	Capacity	Technology	Operation	Status
1	765 MW 746 MW summer	Natural Gas Steam Turbine Natural Gas · ST	Dec 1970	Operating
2	765 MW 749 MW summer	Natural Gas Steam Turbine Natural Gas · ST	Mar 1972	Operating

Performance

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

Peer context

Technology capacity: 1,530 MW
National rank: #11
TX rank: #2

Monthly generation

Download CSV

Latest 12 months

2.37 TWh

Reported net generation

Latest report

Jun 2026

EIA-923 monthly filing

2025 capacity factor

12.3%

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

CBY_CBY_G1·CBY_CBY_G2

Commercial, land, and environmental record

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

Land and environmental record

Air Permit

Permit No. 1532

Cedar Bayou site complex record; TCEQ AIR NEW SOURCE PERMITS; PERMIT; status ACTIVE

TCEQ AIR NEW SOURCE PERMITS: 1532

Air Permit

Permit No. 160538

Cedar Bayou site complex record; TCEQ AIR NEW SOURCE PERMITS; PERMIT; status ACTIVE

TCEQ AIR NEW SOURCE PERMITS: 160538

Air Permit

Permit No. 173323

Cedar Bayou site complex record; TCEQ AIR NEW SOURCE PERMITS; REGISTRATION; status ACTIVE

TCEQ AIR NEW SOURCE PERMITS: 173323

Air Permit

Permit No. 173324

Cedar Bayou site complex record; TCEQ AIR NEW SOURCE PERMITS; REGISTRATION; status ACTIVE

TCEQ AIR NEW SOURCE PERMITS: 173324

Air Permit

Permit No. 178587

Cedar Bayou site complex record; TCEQ AIR NEW SOURCE PERMITS; REGISTRATION; status ACTIVE

TCEQ AIR NEW SOURCE PERMITS: 178587

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

NRG EnergyOwner / operator

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

Dec 1970
Dec 1970
Generator enters operationEIA-860
EIA-860 lists generator 1 with this operating date.
Mar 1972
Mar 1972
Generator enters operation

Reporting portfolio

EIA reporting entity

NRG Texas Power LLC

Entity 54888

Operating portfolio

6 plants

1 states

Reported capacity

9,186.5 MW

Conventional Steam Coal · Natural Gas Fired Combined Cycle · Natural Gas Fired Combustion Turbine

Largest reported plants in this portfolio
Largest reported plants	Capacity	State
W A Parish	4,008.4 MW	TX
Limestone	1,849.8 MW	TX
Cedar BayouCurrent	1,530 MW	TX
T H Wharton	1,189.9 MW	TX
Greens Bayou	432 MW	TX
San Jacinto Steam Electric Station	176.4 MW	TX

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

View full reporting portfolio

Overview

Infrastructure record

Profile

Structured profile

Related assets

Sabine

Deer Park Energy Center

Units and generators

Performance

Peer context

Monthly generation

Grid and market context

Market registration

Commercial, land, and environmental record

Land and environmental record

Related parties and identifiers

Relationship graph

Parties and identifiers

Timeline and sources

Project timeline

T H Wharton

Baytown Energy Center

Channelview Cogeneration Plant

Colorado Bend II

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 Cedar Bayou

How big is Cedar Bayou?

What kind of plant is Cedar Bayou?

Where is Cedar Bayou located?

Who operates Cedar Bayou?

When did Cedar Bayou start operating?

How much electricity does Cedar Bayou generate?

Where does Cedar Bayou connect to the grid?

How does Cedar Bayou compare to other plants?

Co-located assets