Cedar Bayou
NRG EnergyChambers County
Cedar Bayou is a two-unit natural-gas steam plant in Chambers County, Texas, registered as EIA Plant ID 3460. EIA reports 1,530 MW of nameplate capacity and 1,495 MW of net summer and net winter capability. ERCOT maps the two operating units to resources and settlement points CBY_CBY_G1 and CBY_CBY_G2, with resource in-service dates of December 11, 1970 and March 15, 1972. NRG Energy owns the plant through NRG Texas Power LLC. Cedar Bayou 4 and the under-construction Cedar Bayou 5 share the broader site but are separate plants or projects.
Mapped infrastructure geometry associated with this asset.
EIA Form 860
100% reported ownership
EIA Plant 3460
Cedar Bayou site complex
EIA plant 3460 · Inventory for Sep 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| 1 | Natural Gas Steam Turbine | Operating | 765 | Unknown |
| 2 | Natural Gas Steam Turbine | Operating | 765 | Unknown |
| 3 | Natural Gas Steam Turbine | Retired | 765 | Unknown |
Similar plants ranked by technology, capacity, and distance.
Current generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 1 | 765 MW 746 MW summer | Natural Gas Steam Turbine ST | Dec 1970 | Operating |
| 2 | 765 MW 749 MW summer | Natural Gas Steam Turbine ST | Mar 1972 | 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.
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Project milestones and public references behind the asset profile.
EIA-860 lists generator 1 with this operating date.
167.699 acres · NRG Texas LP
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 · Gas steam
Capacity factor is average output vs. this plant's observed peak.
Observed ERCOT settlement prices at CBY_CBY_G1 over 365 days (2025-10-26 to 2026-10-25). This plant is also crosswalked to CBY_CBY_G2; 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 | |
|---|---|---|---|
| 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 portfolioEIA-860 lists generator 2 with this operating date.
PUCT approved registration 20917 for the separate proposed 721 MW facility.
The separate project entered into a $561.9 million, 3% Texas Energy Fund credit agreement.
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.
Cedar Bayou reports 1,530 MW natural gas of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.
Cedar Bayou is a Natural Gas Steam Turbine facility in Chambers County, TX, participating in the ERCOT market.
Cedar Bayou is in Chambers County, TX, inside the ERCOT balancing area.
Cedar Bayou is operated by NRG Texas Power LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Cedar Bayou reports a commercial operation date of 1970-1972. Current status: operating. Source: EIA Sep 2026.
Cedar Bayou reported 2,887.3 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.
Cedar Bayou settles at CBY_CBY_G1, interconnects at Cedar Bayou.
By capacity, Cedar Bayou ranks #13 of 259 operating plants of the same technology nationally. It ranks #2 of 31 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.
