Preston (IA)
Jackson County, Iowa · EIA plant ID 1176 · Operator: City of Preston
Nameplate4MWSummer 4 MW
Generators2in service
Net generation0GWh12 mo to Dec 2025
Capacity factor0%gas/coal/oil units, summer MW
Heat rate—Btu/kWhfossil units, electric fuel, HHV
First online1980Runs 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 | 0.2 | 0.9% | 8,341 |
| 2003 | 0.3 | 1.1% | 11,146 |
| 2004 | 0.3 | 0.9% | 10,140 |
| 2005 | 0.1 | 0.3% | 10,908 |
| 2006 | 0.2 | 0.8% | 7,483 |
| 2007 | 0.1 | 0.3% | 9,823 |
| 2008 | 0.1 | 0.2% | 13,963 |
| 2009 | 0 | 0.2% | 7,089 |
| 2010 | 0 | 0.0% | — |
| 2011 | 0 | 0.1% | 9,955 |
| 2012 | 0 | 0.1% | 7,375 |
| 2013 | 0 | 0.0% | 11,000 |
| 2014 | 0 | 0.0% | — |
| 2015 | 0 | 0.0% | — |
| 2016 | 0 | 0.0% | — |
| 2017 | 0 | 0.0% | — |
| 2018 | 0 | 0.0% | — |
| 2020 | 0 | 0.1% | 11,154 |
| 2021 | 0 | 0.1% | — |
| 2022 | 0 | 0.0% | 17,800 |
| 2023 | 0.1 | 0.2% | 14,222 |
| 2024 | 0 | 0.0% | — |
| 2025 | 0 | 0.0% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 4 | Natural Gas Internal Combustion Engine | IC | 1.8 | 1.8 | Dec 1980 | Operating | — | coming soon |
| 5 | Petroleum Liquids | IC | 1.8 | 2 | Jan 2020 | Operating | — | coming soon |
| 1 | Petroleum Liquids | IC | 0.7 | 0.7 | Dec 1968 | Retired Jan 2014 | — | coming soon |
| 2 | Petroleum Liquids | IC | 0.7 | 0.7 | Dec 1968 | Retired Jan 2014 | — | coming soon |
Owner / operator
Operator: City of Preston. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| City of Preston | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| Maquoketa 2 | 8 MW | 22 km |
| Bellevue | 10 MW | 22.2 km |
| Maquoketa 1 | 24 MW | 22.4 km |
| DPC York | 2 MW | 24.3 km |
| Iowa Hydro LLC | 1 MW | 25.1 km |
| Clinton Schools | 1 MW | 28.6 km |