50 MW Solar operating in Grant, WI — Midcontinent Independent Transmission System Operator, Inc..
50 MW
Nameplate Capacity
1
Generators
unit
Solar Photovoltaic
Technology
2023
Operating Since
Coordinates
42.7399, -90.9201
County
Grant, WI
Nearby Plants
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 | — |
Cassville Solar is a 50 MW solar photovoltaic power plant located in Grant 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. Cassville Solar ranks as the 18th largest solar plant in Wisconsin out of 99, and 1179th nationally out of 7108.
In its most recent year of operation, Cassville Solar generated 97,716 MWh of electricity, achieving a capacity factor of 22.3%. The plant operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority and the MRO NERC region. Financial data indicates an installed cost of $2,067 per kW, as reported to FERC.
Generated from EIA, GEM, and public data sources
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
3.3K MWh
Latest Month
97.7K MWh
Annual Generation
22.3%
Capacity Factor
$1,953/kW
Installed Cost
$3.0/MWh
Operating Cost
Wisconsin Power and Light Company
Reporting Utility
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Point of Interconnection
Nearest Substation
Cassville Solar Farm · 138 kV
Substation Distance
< 10 km
Operator
Alliant Energy
Coord Source
OSM spatial
Market Position
ISO/RTO Market
MISO
LMP Node
ALTE.CASSVILLE
Pricing Hub
MICHIGAN.HUB
Location Type
Generation Node
Node Source
EIA-860 direct report
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