Island Street Peaking Plant
Outagamie County, Wisconsin · EIA plant ID 55836 · Operator: WPPI Energy
Nameplate61MWSummer 55 MW
Generators1in service
Net generation20GWh12 mo to Dec 2025
Capacity factor4%gas/coal/oil units, summer MW
Heat rate11,435Btu/kWhfossil units, electric fuel, HHV
First online2004Runs 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) |
|---|---|---|---|
| 2005 | 36.4 | 7.8% | 11,786 |
| 2006 | 48.3 | 10.4% | 11,361 |
| 2007 | 40 | 8.5% | 11,268 |
| 2008 | 35.6 | 7.5% | 11,128 |
| 2009 | 14.5 | 3.1% | 11,914 |
| 2010 | 21.1 | 4.5% | 12,200 |
| 2011 | 6.2 | 1.3% | 12,984 |
| 2012 | 2.2 | 0.4% | 12,569 |
| 2013 | 6.2 | 1.3% | 12,471 |
| 2014 | 11.3 | 2.5% | 10,928 |
| 2015 | 10.3 | 2.3% | 12,490 |
| 2016 | 10.1 | 2.2% | 12,765 |
| 2017 | 5.7 | 1.3% | 13,777 |
| 2018 | 12.4 | 2.7% | 12,465 |
| 2019 | 7.9 | 1.7% | 11,551 |
| 2020 | 2.4 | 0.5% | 14,702 |
| 2021 | 12.8 | 2.8% | 12,082 |
| 2022 | 11.8 | 2.6% | 11,512 |
| 2023 | 8 | 1.7% | 12,383 |
| 2024 | 11 | 2.3% | 10,906 |
| 2025 | 20.2 | 4.2% | 11,435 |
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.
StatusLikely still dual fuel
Liquid fuel burned · 36 mo70 MMBtu
Last month with liquid burnDec 2024
Switch while operatingYes
Net summer MW on gas55
Net summer MW on oil50
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 |
|---|---|---|---|---|---|---|---|---|
| FT81 | Natural Gas Fired Combustion Turbine | GT | 60.5 | 54.6 | Jun 2004 | Operating | — | coming soon |
| FT83 | Natural Gas Fired Combustion Turbine | GT | 60 | 52 | planned May 2004 | not_current | — | coming soon |
Owner / operator
Operator: WPPI Energy. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| WPPI Energy | 100.0% | 61 MW |
Nearby plants
Within 80 km.
| Kaukauna Gas Turbine | 18 MW | 0 km |
| New Badger | 8 MW | 0.2 km |
| Little Chute | 3 MW | 0.9 km |
| Kaukauna Paper Mill | 45 MW | 1.2 km |
| Combined Locks | 6 MW | 2.8 km |
| Combined Locks Energy Center | 67 MW | 2.9 km |