Cedar Bayou 4
Chambers County, Texas · EIA plant ID 56806 · Operator: NRG Cedar Bayou Development Company LLC
Nameplate536MWSummer 504 MW
Generators3in service
Net generation2,326GWh12 mo to Dec 2025
Capacity factor53%gas/coal/oil units, summer MW
Heat rate7,614Btu/kWhfossil units, electric fuel, HHV
First online2009Runs as baseload
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2009 | 1,485.5 | 57.6% | 7,368 |
| 2010 | 2,191.1 | 49.8% | 7,425 |
| 2011 | 283.7 | 6.5% | 7,860 |
| 2012 | 1,730.7 | 39.3% | 7,650 |
| 2013 | 1,037.5 | 23.6% | 7,706 |
| 2014 | 1,048.1 | 23.8% | 7,796 |
| 2015 | 1,300.5 | 29.6% | 7,751 |
| 2016 | 1,249.8 | 28.3% | 7,825 |
| 2017 | 1,431 | 32.5% | 7,769 |
| 2018 | 623.3 | 14.2% | 7,896 |
| 2019 | 618.6 | 14.1% | 7,881 |
| 2020 | 1,741.1 | 39.5% | 7,696 |
| 2021 | 2,200.7 | 50.0% | 7,640 |
| 2022 | 2,453.1 | 55.8% | 7,536 |
| 2023 | 1,904.7 | 43.1% | 7,608 |
| 2024 | 2,266.1 | 51.2% | 7,535 |
| 2025 | 2,325.8 | 52.7% | 7,614 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 4 | Natural Gas Fired Combined Cycle | CA | 178.5 | 178 | Jun 2009 | Operating | — | coming soon |
| 41 | Natural Gas Fired Combined Cycle | CT | 178.5 | 163 | Jun 2009 | Operating | — | coming soon |
| 42 | Natural Gas Fired Combined Cycle | CT | 178.5 | 163 | Jun 2009 | Operating | — | coming soon |
Owner / operator
Operator: NRG Cedar Bayou Development Company LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| NRG Cedar Bayou Development Company LLC | 50.0% | 268 MW |
| OE Holdings, LLC | 50.0% | 268 MW |
Nearby plants
Within 80 km.
| Cedar Bayou 5 | — | 0.2 km |
| Cedar Bayou | 1,530 MW | 0.3 km |
| Baytown Energy Center | 933 MW | 3.1 km |
| WAL194 | 1 MW | 5.7 km |
| ExxonMobil Baytown Refinery | 209 MW | 7.2 km |
| WAL2439 | 1 MW | 7.6 km |