Colorado Bend II
Constellation Energy Generation, LLCWharton County
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.
Mapped infrastructure geometry associated with this asset.
Natural Gas Fired Combined Cycle
Colorado Bend II is currently operating; a closure or retirement is listed for August 2, 2026.
345 kV · CenterPoint Energy Houston Electric, LLC
EIA plant 60122 · Inventory for Sep 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| CT7 | Natural Gas Fired Combined Cycle | Operating | 360.9 | Unknown |
| CT8 | Natural Gas Fired Combined Cycle | Operating | 360.9 | Unknown |
| STG9 | Natural Gas Fired Combined Cycle | Operating | 508.5 | Unknown |
Similar plants ranked by technology, capacity, and distance.
Current 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 CT | Jun 2017 | Operating |
| CT8 | 360.9 MW 335 MW summer | Natural Gas Fired Combined Cycle CT | Jun 2017 | Operating |
| STG9 | 508.5 MW 478.4 MW summer | Natural Gas Fired Combined Cycle CA | Jun 2017 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Drag organizations to explore the network. Select a node to pin its details and available page link.
Project milestones and public references behind the asset profile.
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.
ERCOT
ERCOT · Wharton County
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
2 ERCOT market resources · Combined-cycle gas
Capacity factor is average output vs. this plant's observed peak.
Observed ERCOT settlement prices at CBECII_89 over 365 days (2025-11-02 to 2026-11-01). This plant is also crosswalked to CBECII_1, CBECII_2, CBECII_CC3, CBECII_CT7; the point with the deepest price history is shown.
The TB2 figure is a price benchmark, not revenue: it values one perfect-foresight cycle per day between the 2 cheapest and 2 dearest hours of each day, gross of round-trip losses, and excludes ancillary services and any physical dispatch constraint. It describes what this node’s price shape was worth over the window — it is not this asset’s realized capture, and no dispatch is assumed or modelled.
| 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 portfolioThe Colorado Bend II project was commissioned and began commercial operations in June 2017.
Exelon completed the legal and structural separation and distribution of Constellation. Colorado Bend II Power, LLC was included among the Constellation entities, making Constellation the successor owner/operator; this was a corporate separation rather than a disclosed cash sale.
ERCOT SCED disclosure is delayed, so plant performance windows end at the latest disclosed interval.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Colorado Bend II reports 1,230.3 MW natural gas of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.
Colorado Bend II is a Natural Gas Fired Combined Cycle facility in Wharton County, TX, participating in the ERCOT market.
Colorado Bend II is in Wharton County, TX, inside the ERCOT balancing area.
Colorado Bend II is operated by Constellation Power, Inc according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Colorado Bend II reported 6,736.5 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.
Colorado Bend II interconnects at Bailey Substation, on the CenterPoint Energy Houston Electric, LLC system.
By capacity, Colorado Bend II ranks #54 of 540 operating plants of the same technology nationally. It ranks #6 of 68 in TX.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.