Granite City Works
Madison County, Illinois · EIA plant ID 57072 · Operator: United States Steel Granite City Works
Nameplate78MWSummer 78 MW
Generators1in service
Net generation448GWh12 mo to Aug 2026
Capacity factor32%other units, summer MW
Heat rate8,215Btu/kWhfossil units, electric fuel, HHV
First online2010
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), other 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) |
|---|---|---|---|
| 2010 | 365.4 | — | 4,634 |
| 2011 | 421.1 | — | 11,684 |
| 2012 | 441.4 | — | 11,714 |
| 2013 | 464.3 | — | 10,961 |
| 2014 | 473.6 | — | 10,845 |
| 2015 | 462 | — | 7,842 |
| 2016 | 529.4 | — | 8,092 |
| 2017 | 508.7 | 40.3% | 8,242 |
| 2018 | 445.9 | 35.4% | 8,229 |
| 2019 | 501.3 | 36.1% | 7,136 |
| 2020 | 534 | 38.4% | 7,063 |
| 2021 | 528 | 38.0% | 6,819 |
| 2022 | 548.8 | 39.5% | 7,134 |
| 2023 | 538.9 | 38.8% | 7,376 |
| 2024 | 484.7 | 34.8% | 8,307 |
| 2025 | 448 | 32.3% | 8,350 |
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 |
|---|---|---|---|---|---|---|---|---|
| G-1 | All Other | ST | 78 | 78 | Jun 2010 | Operating | — | coming soon |
Owner / operator
Operator: United States Steel Granite City Works. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| United States Steel Granite City Works | 100.0% | 78 MW |
Nearby plants
Within 80 km.
| Mulberry Solar, LLC | 2 MW | 3.6 km |
| Milam Gas Recovery | 2 MW | 4.1 km |
| Granite City Solar | 4 MW | 4.2 km |
| Venice | 586 MW | 5.6 km |
| Trigen St. Louis | 34 MW | 8.2 km |
| St. Clair Solar 3 | 2 MW | 9 km |