Diesel Generators
Dane County, Wisconsin · EIA plant ID 56070 · Operator: Madison Gas & Electric Co
Nameplate54MWSummer 54 MW
Generators1in service
Net generation1GWh12 mo to Aug 2026
Capacity factor0%gas/coal/oil units, summer MW
Heat rate9,380Btu/kWhfossil units, electric fuel, HHV
First online2001Runs as rarely runs
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) |
|---|---|---|---|
| 2004 | 0.6 | 0.2% | 10,759 |
| 2005 | 0.9 | 0.2% | 10,657 |
| 2006 | 0.8 | 0.2% | 11,822 |
| 2007 | 0.6 | 0.2% | 11,087 |
| 2008 | 0.6 | 0.1% | 11,992 |
| 2009 | 0.4 | 0.1% | 12,754 |
| 2010 | 0.4 | 0.1% | 12,781 |
| 2011 | 0.5 | 0.1% | 11,235 |
| 2012 | 0.5 | 0.1% | 9,995 |
| 2013 | 0.5 | 0.1% | 9,948 |
| 2014 | 0.5 | 0.1% | 10,421 |
| 2015 | 0.5 | 0.1% | 10,043 |
| 2016 | 0.5 | 0.1% | 10,190 |
| 2017 | 0.5 | 0.1% | 9,885 |
| 2018 | 0.6 | 0.1% | 10,286 |
| 2019 | 0.7 | 0.2% | 10,588 |
| 2020 | 0.5 | 0.1% | 10,700 |
| 2021 | 0.9 | 0.2% | 8,927 |
| 2022 | 0.5 | 0.1% | 10,194 |
| 2023 | 0.5 | 0.1% | 10,514 |
| 2024 | 0.5 | 0.1% | 9,073 |
| 2025 | 0.9 | 0.2% | 9,951 |
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 | 54 | 53.7 | Jun 2001 | Operating | — | coming soon |
Owner / operator
Operator: Madison Gas & Electric Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Madison Gas & Electric Co | 100.0% | 54 MW |
Nearby plants
Within 80 km.
| Blount Street | 100 MW | 0.1 km |
| Blount BESS | 7 MW | 0.2 km |
| Capitol Heat and Power | 2 MW | 0.3 km |
| UW Madison Charter Street Plant | 11 MW | 2.4 km |
| West Campus Cogeneration Facility | 169 MW | 4.1 km |
| Galactic Wind | 10 MW | 4.2 km |