Valley (WI)
Natural gas power plant in Milwaukee County, Wisconsin. 272 MW of nameplate capacity across 2 generators, operated by Wisconsin Electric Power Co.
Also known as Valley Power Plant · EIA plant 4042
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Key facts
- Capacity
- 272 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- June 1968First generator online
- Operator
- Wisconsin Electric Power CoEIA operator ID 20847
- Grid
- MISOBalancing authority MISO
- Price nodes
- 2 MISO nodesResource nodes with prices
- Location
- Milwaukee County, WI43.0303, −87.9233
- EIA plant ID
- 4042EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Valley (WI) produces
Free · EIA-923Net generation, 2025
370 GWh
369,729 MWh, final
Capacity factor, 2025
15.4%
2024: 17.6%
January to July 2026
179 GWh
Provisional
Range, 2016 to 2025
276.1–445.6
GWh a year. Low 2018, high 2022
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 1,063,493 | Not reported | 12 of 12 |
| 2001 | 1,115,111 | Not reported | 12 of 12 |
| 2002 | 1,147,954 | Not reported | 12 of 12 |
| 2003 | 1,127,237 | Not reported | 12 of 12 |
| 2004 | 1,155,773 | Not reported | 12 of 12 |
| 2005 | 1,462,990 | Not reported | 12 of 12 |
| 2006 | 1,294,492 | Not reported | 12 of 12 |
| 2007 | 1,278,209 | Not reported | 12 of 12 |
| 2008 | 116,366 | Not reported | 1 of 12 |
| 2009 | 874,822 | Not reported | 12 of 12 |
| 2010 | 775,815 | 32.2% | 12 of 12 |
| 2011 | 626,835 | 26.0% | 12 of 12 |
| 2012 | 481,910 | 20.0% | 12 of 12 |
| 2013 | 457,011 | 19.0% | 12 of 12 |
| 2014 | Not reported | Not reported | 0 of 12 |
| 2015 | 443,915 | Not reported | 11 of 12 |
| 2016 | 444,315 | Not reported | 12 of 12 |
| 2017 | 381,617 | 15.9% | 12 of 12 |
| 2018 | 276,122 | 11.5% | 12 of 12 |
| 2019 | 379,801 | 15.8% | 12 of 12 |
| 2020 | 443,145 | 18.4% | 12 of 12 |
| 2021 | 318,670 | 14.5% | 11 of 12 |
| 2022 | 445,618 | 18.5% | 12 of 12 |
| 2023 | 377,146 | 15.7% | 12 of 12 |
| 2024 | 425,570 | 17.6% | 12 of 12 |
| 2025 | 369,729 | 15.4% | 12 of 12 |
| 2026 (provisional, partial year) | 179,363 | 12.8% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · MISOEmissions
Free · EPA CAMPDCO₂, 2025
494,858
US short tons. 2024: 481,073
SO₂, 2025
3
US short tons
NOx, 2025
256
US short tons
CO₂ per MWh, calculated
1.34 t
About 2,677 lb per MWh
4 of 4 EPA units reported CO₂ in 2025 (1, 2, 3, 4), matched to EIA plant 4042 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
40,867
million gallons
Consumption, 2024
0
million gallons
Source
Menominee River
Surface, Fresh. Once-through
Watershed stress
Very low/none · 0.154
USGS SUI, HUC12 Menomonee River
24 of 24 cooling months report withdrawal. SUI of the HUC12 containing the plant. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Natural Gas Steam Turbine | 136.0 | June 1968 |
| 2 | Natural Gas Steam Turbine | 136.0 | March 1969 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Wisconsin Electric Power Co as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near Valley (WI)
More plants operated by Wisconsin Electric Power Co
Questions about Valley (WI)
How much power does Valley (WI) produce?
Valley (WI) reported 369,729 MWh (370 GWh) of net generation in 2025, a 15.4% capacity factor on 272 MW of nameplate capacity. From January to July 2026 it reported 179 GWh, which is provisional.
Where is Valley (WI)?
Valley (WI) is in Milwaukee County, Wisconsin, at 43.0303, −87.9233. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Valley (WI)?
EIA-860M for August 2026 lists Wisconsin Electric Power Co as the operator (EIA operator ID 20847). The operator is not always the owner.
When did Valley (WI) start operating?
Its first generator began operating in June 1968, according to EIA-860M.
Does InfraMap have power prices for Valley (WI)?
Yes. InfraMap has MISO day-ahead and real-time prices at 2 price nodes linked to Valley (WI), with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- MISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page