Trigen St. Louis
St. Louis County, Missouri · EIA plant ID 56309 · Operator: Trigen St Louis Energy Corporation
Nameplate34MWSummer 33 MW
Generators6in service
Net generation15GWh12 mo to Aug 2026
Capacity factor5%gas/coal/oil units, summer MW
Heat rate4,609Btu/kWhfossil units, electric fuel, HHV
First online1999Runs as intermediate
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) |
|---|---|---|---|
| 2004 | 46.2 | 20.2% | 11,605 |
| 2005 | 5.2 | 2.3% | 5,583 |
| 2006 | 30.4 | 12.5% | 5,583 |
| 2007 | 44.9 | 16.7% | 5,416 |
| 2008 | 40 | 14.8% | 5,583 |
| 2009 | 41.4 | 15.3% | 5,698 |
| 2010 | 54.5 | 20.2% | 5,416 |
| 2011 | 40.9 | 14.7% | 5,416 |
| 2012 | 49.5 | 17.7% | 6,040 |
| 2013 | 24.6 | 8.8% | 5,583 |
| 2014 | 17.2 | 6.2% | 5,583 |
| 2015 | 10.5 | 3.8% | 5,862 |
| 2016 | 18.5 | 6.6% | 4,619 |
| 2017 | 26.3 | 9.4% | 4,613 |
| 2018 | 50.6 | 18.1% | 4,640 |
| 2019 | 19.5 | 7.0% | 5,375 |
| 2020 | 0 | 0.0% | — |
| 2021 | 0 | 0.0% | — |
| 2022 | 38.5 | 13.8% | 4,374 |
| 2023 | 79 | 27.0% | 4,484 |
| 2024 | 84.4 | 28.8% | 4,506 |
| 2025 | 48.3 | 16.5% | 4,491 |
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 |
|---|---|---|---|---|---|---|---|---|
| CT-1 | Natural Gas Fired Combined Cycle | CS | 5.9 | 5.5 | Jul 1999 | Operating | — | coming soon |
| CT-2 | Natural Gas Fired Combined Cycle | CS | 5.9 | 5.5 | Jul 1999 | Operating | — | coming soon |
| IC-1 | Natural Gas Internal Combustion Engine | IC | 1.2 | 1.2 | Jun 1999 | Operating | — | coming soon |
| ST-3 | Natural Gas Fired Combined Cycle | CA | 18.2 | 18.2 | Jun 2000 | Operating | — | coming soon |
| ST-4 | Natural Gas Steam Turbine | ST | 1.5 | 1.5 | Jun 1999 | Operating | — | coming soon |
| ST-5 | Natural Gas Steam Turbine | ST | 1.5 | 1.5 | Jun 1999 | Operating | — | coming soon |
Owner / operator
Operator: Trigen St Louis Energy Corporation. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Trigen St Louis Energy Corporation | 100.0% | 34 MW |
Nearby plants
Within 80 km.
| Southwestern Bell Telephone | 17 MW | 1.4 km |
| Venice | 586 MW | 3.2 km |
| SCS American Bottoms 009885 Sauget, LLC | 2 MW | 4.9 km |
| Anheuser-Busch St Louis | 26 MW | 5 km |
| Milam Gas Recovery | 2 MW | 5.1 km |
| IKEA St. Louis 410 | 1 MW | 5.6 km |