Optim Energy Altura Cogen LLC
Harris County, Texas · EIA plant ID 50815 · Operator: Optim Energy LLC
Nameplate644MWSummer 485 MW
Generators7in service
Net generation3,400GWh12 mo to Aug 2026
Capacity factor80%gas/coal/oil units, summer MW
Heat rate5,262Btu/kWhfossil units, electric fuel, HHV
First online1985Runs as baseload
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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) |
|---|---|---|---|
| 2001 | 3,720 | — | — |
| 2002 | 3,414.1 | — | — |
| 2003 | 3,016.9 | 76.9% | 11,262 |
| 2004 | 3,025.4 | 76.9% | 11,086 |
| 2005 | 3,091.7 | 78.8% | 11,211 |
| 2006 | 2,765.6 | 70.5% | 11,224 |
| 2007 | 3,004 | 69.6% | 11,241 |
| 2008 | 2,869.9 | 66.3% | 11,100 |
| 2009 | 2,805.8 | 65.0% | 10,993 |
| 2010 | 2,907.1 | 67.3% | 11,130 |
| 2011 | 2,944.8 | 68.2% | 11,042 |
| 2012 | 2,794.3 | 64.5% | 10,911 |
| 2013 | 2,801.3 | 64.4% | 11,128 |
| 2014 | 2,988.9 | 63.4% | 11,118 |
| 2015 | 3,091.4 | 65.8% | 11,091 |
| 2016 | 2,937.9 | 62.3% | 5,308 |
| 2017 | 2,984.5 | 63.4% | 5,258 |
| 2018 | 2,990.1 | 62.9% | 5,269 |
| 2019 | 3,209.1 | 68.2% | 5,326 |
| 2020 | 3,341.9 | 63.8% | 5,256 |
| 2021 | 3,248.9 | 62.2% | 5,262 |
| 2022 | 3,190.3 | 60.0% | 5,263 |
| 2023 | 3,647.6 | 86.4% | 5,264 |
| 2024 | 3,540.7 | 85.2% | 5,262 |
| 2025 | 3,444.1 | 81.1% | 5,268 |
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 |
|---|---|---|---|---|---|---|---|---|
| GEN1 | Natural Gas Fired Combined Cycle | CT | 84.9 | 60 | Nov 1985 | Operating | — | coming soon |
| GEN2 | Natural Gas Fired Combined Cycle | CT | 84.9 | 61 | Dec 1985 | Operating | — | coming soon |
| GEN3 | Natural Gas Fired Combined Cycle | CT | 84.9 | 62 | Dec 1985 | Operating | — | coming soon |
| GEN4 | Natural Gas Fired Combined Cycle | CT | 84.9 | 62.5 | Mar 1986 | Operating | — | coming soon |
| GEN5 | Natural Gas Fired Combined Cycle | CT | 84.9 | 61.5 | Apr 1986 | Operating | — | coming soon |
| GEN6 | Natural Gas Fired Combined Cycle | CA | 129.2 | 118 | Apr 1986 | Operating | — | coming soon |
| GEN7 | Natural Gas Fired Combined Cycle | CT | 89.9 | 60 | Jun 1995 | Operating | — | coming soon |
Owner / operator
Operator: Optim Energy LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| OE Holdings, LLC | 100.0% | 644 MW |
Nearby plants
Within 80 km.
| Channelview Cogeneration Plant | 918 MW | 2.7 km |
| WAL3500 | 1 MW | 5.7 km |
| SJRR Power LLC | 100 MW | 7.3 km |
| Chamon Power LLC | 121 MW | 7.5 km |
| Remy Jade Power Station | 484 MW | 9.5 km |
| WAL522 | 1 MW | 9.6 km |