Nine Springs
Dane County, Wisconsin · EIA plant ID 9674 · Operator: Madison Gas & Electric Co
Nameplate16MWSummer 14 MW
Generators1in service
Net generation0GWh12 mo to Dec 2025
Capacity factor0%gas/coal/oil units, summer MW
Heat rate16,820Btu/kWhfossil units, electric fuel, HHV
First online1964Runs 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) |
|---|---|---|---|
| 2001 | 3 | 2.8% | 14,254 |
| 2002 | 0.1 | 0.0% | — |
| 2003 | 0.1 | 0.1% | 16,306 |
| 2004 | 0.2 | 0.1% | 11,247 |
| 2005 | 0.3 | 0.3% | 24,832 |
| 2006 | 0.1 | 0.1% | 26,739 |
| 2007 | 0 | 0.0% | — |
| 2008 | -0.1 | -0.1% | — |
| 2009 | 0.7 | 0.5% | 21,154 |
| 2010 | 0.1 | 0.1% | — |
| 2011 | 0 | 0.0% | — |
| 2012 | 0.2 | 0.2% | — |
| 2013 | 0 | 0.0% | — |
| 2014 | 0.2 | 0.1% | 20,133 |
| 2015 | 1.1 | 0.9% | 16,789 |
| 2016 | 1.8 | 1.5% | 16,928 |
| 2017 | 0.5 | 0.5% | 18,004 |
| 2018 | 0 | 0.0% | — |
| 2019 | 0 | 0.0% | 18,652 |
| 2020 | 0 | 0.0% | 19,808 |
| 2021 | 0 | 0.0% | 29,500 |
| 2022 | 0 | 0.0% | 14,250 |
| 2023 | 0.1 | 0.1% | 16,477 |
| 2024 | 0.1 | 0.1% | 19,634 |
| 2025 | 0.1 | 0.1% | 16,820 |
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 |
|---|---|---|---|---|---|---|---|---|
| GT1 | Natural Gas Fired Combustion Turbine | GT | 16.2 | 13.9 | Dec 1964 | 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% | 16 MW |
Nearby plants
Within 80 km.
| Nine Springs Solar | — | 1.1 km |
| Blount BESS | 7 MW | 4.7 km |
| Blount Street | 100 MW | 4.7 km |
| Capitol Heat and Power | 2 MW | 4.7 km |
| Diesel Generators | 54 MW | 4.8 km |
| UW Madison Charter Street Plant | 11 MW | 4.9 km |