Shirley Wind
Brown County, Wisconsin · EIA plant ID 57553 · Operator: Duke Energy Renewables Services
Nameplate20MWSummer 20 MW
Generators1in service
Net generation57GWh12 mo to Dec 2025
Capacity factor33%wind units, summer MW
Heat rate—thermal plants only
First online2010
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), wind 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.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2010 | 2.9 | 10.0% | — |
| 2011 | 58.2 | 33.2% | — |
| 2012 | 63.7 | 36.3% | — |
| 2013 | 60.8 | 34.7% | — |
| 2014 | 65 | 37.1% | — |
| 2015 | 64.8 | 37.0% | — |
| 2016 | 60.4 | 34.4% | — |
| 2017 | 61.5 | 35.1% | — |
| 2018 | 53 | 30.2% | — |
| 2019 | 53.9 | 30.8% | — |
| 2020 | 61 | 34.7% | — |
| 2021 | 53.2 | 30.3% | — |
| 2022 | 59.6 | 34.0% | — |
| 2023 | 53.5 | 30.5% | — |
| 2024 | 59.5 | 33.9% | — |
| 2025 | 57 | 32.6% | — |
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 | Onshore Wind Turbine | WT | 20 | 20 | Nov 2010 | Operating | — | nordex N100/2500 |
Owner / operator
Operator: Duke Energy Renewables Services. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Duke Energy Renewables Services | 100.0% | 20 MW |
Nearby plants
Within 80 km.
| De Pere Energy Center | 192 MW | 16 km |
| Consumer Operations LLC | 48 MW | 18.1 km |
| Ridgeview | 5 MW | 20.8 km |
| Pulliam | 91 MW | 22.3 km |
| Fox Energy Center | 619 MW | 22.6 km |
| Dairyland WTE Plant | 1 MW | 23.5 km |