Wautoma Solar — Plant Summary
- EIA Plant ID
- 65000
- Capacity
- 99 MW
- Primary Fuel
- Solar
- Technology
- Solar Photovoltaic
- Status
- Operating
- Location
- Waushara, WI
- Operating Since
- 2023
- Generators
- 1
- Operator
- Wisconsin Power & Light Co
- Parent Company
- Alliant Energy
- Annual Generation
- 187,116 MWh
- Capacity Factor
- 21.5%
- Balancing Authority
- Midcontinent Independent Transmission System Operator, Inc..
- ISO/RTO
- MISO
- NERC Region
- MRO
Wautoma Solar
OperatingSolar
Ranked #15 of 102 Solar plants in WI#804 of 7447 nationally
99 MW Solar operating in Waushara, WI — Midcontinent Independent Transmission System Operator, Inc..
EIAGEM
99 MW
Nameplate Capacity
1
Generators
unit
Solar Photovoltaic
Technology
2023
Operating Since
Location
Coordinates
44.0625, -89.3016
County
Waushara, WI
Ownership & Operator
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Wisconsin Power & Light Co | Wisconsin Power and Light | — |
| Owner(s) | Wisconsin Power & Light Co | Alliant Energy | — |
| Status | Operating | operating | — |
Ownership Chain
About
Wautoma Solar is a 99 MW solar photovoltaic power plant located in Waushara County, Wisconsin. The plant, which began operating in 2023, is owned by Alliant Energy and operated by Wisconsin Power & Light Co. It consists of a single generator utilizing single-axis tracking technology. Wautoma Solar is connected to the Midcontinent Independent Transmission System Operator (MISO) balancing authority and resides within the MRO NERC region. The plant is ranked as the 12th largest solar facility in Wisconsin out of 99, and 644th nationally out of 7108.
In its most recent year of operation, Wautoma Solar generated 187,116 MWh of electricity, achieving a capacity factor of 21.5%. Financial data indicates an installed cost of $1,642 per kW, as reported to FERC.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
MRO
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc..
Grid Voltage
138 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Interconnection Queue1 projectBeta
OperationalSolar99 MWMISOLBNL + Live
Generation
5.2K MWh
Latest Month
187.1K MWh
Annual Generation
21.5%
Capacity Factor
Financial DataBeta
Source: FERC Form 1HIGH
$1,672/kW
Installed Cost
$3.3/MWh
Operating Cost
Wisconsin Power and Light Company
Reporting Utility
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Wautoma · 138 kV
Substation Distance
< 10 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
MISO
LMP Node
ALTE.WAUTOMA
Pricing Hub
MICHIGAN.HUB
Location Type
Generation Node
Node Source
EIA-860 direct report
News & Articles (10)Beta
General
Alliant Energy Brings Solar, Wind, and Energy Storage Projects To Iowa
Alliant Energy maintains a balanced mix of energy resources that keep costs low and lights on for 1 million customers in Iowa and Wisconsin.
The Business Download |·2 weeks ago
General
Alliant Energy battery project in Sheboygan underway after delays
Alliant Energy's 99-MW battery storage project in Sheboygan faces delays but could be online by year's end, boosting clean energy capacity.
Finance & Commerce·4 weeks ago
General
Alliant Energy battery project in Sheboygan underway after delays
Alliant Energy's 99-MW battery storage project in Sheboygan faces delays but could be online by year's end, boosting clean energy capacity.
Finance & Commerce·4 weeks ago
Industry·corporate
Here's the status of 11 solar projects proposed in central Wisconsin
Several solar array proposals were in the news recently. Find out where they are planned, construction timelines and more.
Stevens Point Journal·3 months ago
Last updated 2026-03-26
View all 10 articles