Archer Daniels Midland Decatur
Macon County, Illinois · EIA plant ID 10865 · Operator: Archer Daniels Midland Co
Nameplate335MWSummer 335 MW
Generators7in service
Net generation923GWh12 mo to Aug 2026
Capacity factor31%gas/coal/oil units, summer MW
Heat rate5,902Btu/kWhfossil units, electric fuel, HHV
First online1987Runs 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) |
|---|---|---|---|
| 2001 | 903.7 | 44.3% | 12,566 |
| 2002 | 1,102.5 | 54.3% | 10,260 |
| 2003 | 214.1 | 10.5% | 14,574 |
| 2004 | 1,331.5 | 65.3% | 6,199 |
| 2005 | 1,528.5 | 55.6% | 6,199 |
| 2006 | 1,638.6 | 55.0% | 6,199 |
| 2007 | 1,619.4 | 54.5% | 6,199 |
| 2008 | 1,425.4 | 48.1% | 7,716 |
| 2009 | 1,185.3 | 40.0% | 7,932 |
| 2010 | 1,255.5 | 42.4% | 7,872 |
| 2011 | 1,296.2 | 43.9% | 7,881 |
| 2012 | 1,158 | 39.2% | 8,022 |
| 2013 | 1,081.8 | 36.5% | 8,096 |
| 2014 | 1,168.7 | 39.7% | 7,938 |
| 2015 | 1,094.1 | 37.2% | 8,111 |
| 2016 | 1,048 | 35.5% | 5,702 |
| 2017 | 1,340.6 | 45.6% | 5,514 |
| 2018 | 1,332.4 | 45.3% | 5,444 |
| 2019 | 1,188.3 | 40.4% | 5,666 |
| 2020 | 1,178.6 | 40.1% | 5,657 |
| 2021 | 1,085.1 | 36.9% | 5,835 |
| 2022 | 1,121.2 | 38.2% | 5,777 |
| 2023 | 885.9 | 30.2% | 6,001 |
| 2024 | 658.6 | 22.4% | 6,339 |
| 2025 | 901.2 | 30.7% | 5,997 |
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 |
|---|---|---|---|---|---|---|---|---|
| GEN2 | Conventional Steam Coal | ST | 31 | 31 | Apr 1987 | Operating | — | coming soon |
| GEN3 | Conventional Steam Coal | ST | 31 | 31 | Apr 1987 | Operating | — | coming soon |
| GEN4 | Conventional Steam Coal | ST | 31 | 31 | May 1987 | Operating | — | coming soon |
| GEN5 | Conventional Steam Coal | ST | 31 | 31 | Dec 1987 | Operating | — | coming soon |
| GEN6 | Conventional Steam Coal | ST | 31 | 31 | Sep 1994 | Operating | — | coming soon |
| GEN7 | Conventional Steam Coal | ST | 75 | 75 | Apr 1997 | Operating | — | coming soon |
| GEN8 | Conventional Steam Coal | ST | 105 | 105 | Apr 2005 | Operating | — | coming soon |
Owner / operator
Operator: Archer Daniels Midland Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Archer Daniels Midland Co | 100.0% | 335 MW |
Nearby plants
Within 80 km.
| Tate & Lyle Decatur Plant Cogen | 65 MW | 4.2 km |
| Macon County IL S1 | 2 MW | 5.2 km |
| Oreana Solar | 5 MW | 7.2 km |
| PPG Industries Works 14 | 5 MW | 10.2 km |
| Oreana Renewables | 5 MW | 10.3 km |
| IL - Nexamp Argenta | 5 MW | 12.1 km |