Marshfield Utilities Gas Plant
Wood County, Wisconsin · EIA plant ID 56480 · Operator: City of Marshfield - (WI)
Nameplate60MWSummer 53 MW
Generators1in service
Net generation19GWh12 mo to Dec 2025
Capacity factor4%gas/coal/oil units, summer MW
Heat rate11,353Btu/kWhfossil units, electric fuel, HHV
First online2011Runs as peaking
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) |
|---|---|---|---|
| 2011 | 10.9 | 3.8% | 11,464 |
| 2012 | 5.3 | 1.1% | 12,679 |
| 2013 | 4 | 0.9% | 13,161 |
| 2014 | 2.2 | 0.5% | 14,039 |
| 2015 | 0.5 | 0.1% | 12,178 |
| 2016 | 4.6 | 1.0% | 11,165 |
| 2017 | 1.5 | 0.3% | 11,105 |
| 2018 | 1.5 | 0.3% | 11,483 |
| 2019 | 1 | 0.2% | 11,470 |
| 2020 | 2.4 | 0.5% | 11,077 |
| 2021 | 7.1 | 1.5% | 11,106 |
| 2022 | 9.2 | 2.0% | 11,116 |
| 2023 | 8.9 | 1.9% | 11,315 |
| 2024 | 4 | 0.9% | 11,220 |
| 2025 | 18.8 | 4.0% | 11,353 |
Fuel capability
Gas-fired turbines (CT/GT/CA/CS) that can also burn liquid fuel. EIA-860 Schedule 3 for capability, EIA-923 for actual burn.
StatusListed in EIA-860, no liquid burn in 36 months
Liquid fuel burned · 36 mo0 MMBtu
Last month with liquid burn—
Switch while operatingYes
Net summer MW on gas53
Net summer MW on oil51
Time gas → oilup to 1 h (EIA 1H)
Time oil → gasup to 1 h (EIA 1H)
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 |
|---|---|---|---|---|---|---|---|---|
| M1 | Natural Gas Fired Combustion Turbine | GT | 60.4 | 53.3 | Jun 2011 | Operating | — | coming soon |
| 1A | Natural Gas Fired Combustion Turbine | GT | 60.4 | 60.4 | planned May 2010 | not_current | — | coming soon |
Owner / operator
Operator: City of Marshfield - (WI). Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| City of Marshfield - (WI) | 100.0% | 60 MW |
Nearby plants
Within 80 km.
| Little Rose Solar WI, LLC | — | 18.5 km |
| Big Rapids Solar WI, LLC | — | 20.7 km |
| Wisconsin Rapids Paper Mill | retired | 30.4 km |
| Biron | 6 MW | 36.1 km |
| Wisconsin Rapids Pulp Mill | retired | 36.2 km |
| Biron Mill | 62 MW | 36.2 km |