- Clean firm
- Operating
- 10 · 100 · 1,000 MW
Map
- Clean firm
- Operating
Merrill: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Merrill
Power plant · Hydro
Key facts
Power plant · Hydroran 18% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1917
- Net generation, 2025
- 3,650 MWh
- Grid
- 25 kV to Wisconsin Public Service Corp (MISO)
- Location
- Lincoln County, Wisconsin
- Operated by
- Wisconsin Public Service CorpSourceEIA-860M Preliminary Monthly Electric Generator Inventory
Operations
- Net generation, 2025
- 3,650
MWh - Fuel burned, 2025
- 12,456
MMBtu - Capacity factor, 2025
- 18.1
% - Heat rate, 2025
- Not stated
| Year | Net generation (MWh) | Fuel burned (MMBtu) | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|---|
| 2025 | 3,650 | 12,456 | 18.1% | — |
| 2024 | 4,339 | 14,804 | 21.5% | — |
| 2023 | 8,206 | 27,999 | 40.7% | — |
| 2022 | 8,252 | 28,155 | 41.0% | — |
| 2021 | 9,283 | 82,098 | 46.1% | — |
| 2020 | 10,335 | 90,606 | 51.2% | — |
| 2019 | 7,005 | 62,380 | 34.8% | — |
| 2018 | 7,515 | 68,416 | 37.3% | — |
| 2017 | 8,772 | 80,816 | 43.5% | — |
| 2016 | 11,366 | 104,931 | 56.3% | — |
| 2015 | 10,201 | 95,063 | 50.6% | — |
| 2014 | 8,956 | 85,169 | 44.5% | — |
| 2013 | 9,768 | 93,198 | 48.5% | — |
| 2012 | 5,107 | 48,598 | 25.3% | — |
| 2011 | 9,250 | 89,873 | 45.9% | — |
| 2010 | 8,254 | 80,526 | 41.0% | — |
| 2009 | 4,625 | 45,142 | 23.0% | — |
| 2008 | 3,226 | 31,787 | 16.0% | — |
| 2007 | 7,433 | 73,468 | 36.9% | — |
| 2006 | 8,522 | 84,531 | 42.3% | — |
| 2005 | 7,576 | 75,752 | 37.6% | — |
| 2004 | 8,406 | 84,245 | 41.6% | — |
| 2003 | 8,838 | 90,510 | 43.9% | — |
| 2002 | 11,930 | 121,364 | 59.2% | — |
| 2001 | 8,745 | 90,362 | 43.4% | — |
How these are worked out
Net generation and fuel burned are the monthly figures EIA publishes in its bulk electricity file, from the plant's Form 923 reports; a year is the sum of its months. Capacity factor is a full year's net generation over today's nameplate capacity times the hours in that year (8,784 in a leap year), so a plant uprated or partly retired since reads against its current size; heat rate is fuel burned over net generation, for plants that burn fuel. A year with fewer than twelve months stated has no capacity factor, and a value outside the plausible range is left blank rather than shown. By month, the charts apply the same rules to each month's own hours and fuel.