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99 MW Solar operating in Waushara, WI — Midcontinent Independent Transmission System Operator, Inc..
99 MW
Nameplate Capacity
1
Generators
unit
Solar Photovoltaic
Technology
2023
Operating Since
Coordinates
44.0625, -89.3016
County
Waushara, WI
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 | — |
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
ISO/RTO
MISO
Market
ISO/RTO Member
NERC Region
MRO — Midwest Reliability Organization
Balancing Authority
5.2K MWh
Latest Month
187.1K MWh
Annual Generation
21.5%
Capacity Factor
Solar photovoltaic · Wisconsin Power and Light Company · Data from 2023–2024
$1,672/kW
Installed Cost
$30/kW
Annual CapEx
$3.3/MWh
Operating Cost
Point 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
Alt. Hub / Zone
MINN.HUB
Location Type
Generation Node
Node Source
EIA-860 direct report
Last updated 2026-03-14
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ask pi about Wautoma SolarMidcontinent Independent Transmission System Operator, Inc.. (MISO)
Grid Voltage
138.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility