Gilliam South
Adair County, Iowa · EIA plant ID 7857 · Operator: City of Stuart - (IA)
Nameplate4MWSummer 4 MW
Generators2in service
Net generation0GWh12 mo to Dec 2025
Capacity factor0%gas/coal/oil units, summer MW
Heat rate19,500Btu/kWhfossil units, electric fuel, HHV
First online2001Runs as rarely runs
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) |
|---|---|---|---|
| 2002 | 0 | 0.0% | 11,988 |
| 2003 | 0.1 | 0.8% | 9,854 |
| 2004 | 0.1 | 0.7% | 9,570 |
| 2005 | 0 | 0.2% | 9,642 |
| 2006 | 0 | 0.2% | 9,840 |
| 2007 | 0 | 0.0% | — |
| 2008 | 0 | 0.0% | — |
| 2009 | 0 | 0.0% | — |
| 2010 | 0 | 0.0% | — |
| 2011 | 0 | 0.0% | — |
| 2012 | 0 | 0.0% | — |
| 2013 | 0 | 0.0% | — |
| 2014 | 0 | 0.0% | — |
| 2015 | 0 | 0.0% | — |
| 2016 | 0 | 0.0% | — |
| 2017 | 0 | 0.0% | — |
| 2018 | 0 | 0.0% | 12,600 |
| 2019 | 0 | 0.0% | 12,500 |
| 2020 | 0 | 0.1% | 12,522 |
| 2021 | 0 | 0.0% | 14,000 |
| 2022 | 0 | 0.1% | 19,000 |
| 2023 | 0 | 0.0% | 25,000 |
| 2024 | 0 | 0.0% | — |
| 2025 | 0 | 0.0% | 19,500 |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Petroleum Liquids | IC | 1.8 | 1.7 | Feb 2001 | Operating | — | coming soon |
| 7 | Petroleum Liquids | IC | 2.5 | 2.3 | Apr 2012 | Operating | — | coming soon |
Owner / operator
Operator: City of Stuart - (IA). Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| City of Stuart - (IA) | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| Stuart (IA) | 3 MW | 1.2 km |
| Wind GEM | 2 MW | 3.1 km |
| Arbor Hill Solar | 25 MW | 6.3 km |
| Arbor Hill Wind Farm | 310 MW | 11.6 km |
| Wolverine | 2 MW | 15.1 km |
| Meadow Ridge | 2 MW | 15.4 km |