Alliant Energy Neenah — Plant Summary
- EIA Plant ID
- 55135
- Capacity
- 371 MW
- Primary Fuel
- Natural Gas
- Technology
- Natural Gas Fired Combustion Turbine
- Status
- Operating
- Location
- Winnebago, WI
- Operating Since
- 2000
- Generators
- 2
- Operator
- Wisconsin Power & Light Co
- Parent Company
- —
- Annual Generation
- 739,902.99 MWh
- Capacity Factor
- 22.6%
- Balancing Authority
- Midcontinent Independent Transmission System Operator, Inc..
- ISO/RTO
- MISO
- NERC Region
- RFC
Alliant Energy Neenah
OperatingNatural Gas
Ranked #10 of 40 Natural Gas plants in WI#574 of 2009 nationally
371 MW Natural Gas operating in Winnebago, WI — Midcontinent Independent Transmission System Operator, Inc..
EIAWD
371 MW
Nameplate Capacity
2
Generators
units
Natural Gas Fired Combustion Turbine
Technology
2000
Operating Since
Location
Coordinates
44.1936, -88.5064
County
Winnebago, WI
Nearby Plants
- AppletonHydro2.2 MW · 10.2 km
- Kimberly MillHydro2.1 MW · 16.7 km
- Little ChuteHydro3.3 MW · 17.4 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Wisconsin Power & Light Co | — | — |
| Owner(s) | Wisconsin Power & Light Co | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
The Alliant Energy Neenah plant is a 371 MW natural gas-fired power plant located in Winnebago County, Wisconsin. The plant began operating in 2000 and consists of two natural gas-fired combustion turbine generators. Wisconsin Power & Light Co. operates the facility. The plant is connected to the Midcontinent Independent Transmission System Operator (MISO) balancing authority.
In the most recent year of data, the plant generated 739,903 MWh of electricity, achieving a capacity factor of 22.6%. The plant ranks as the 10th largest of 19 power plants in Wisconsin, and 575th out of 945 plants nationally. Financial data indicates an installed cost of $315.75 per kW, according to FERC filings.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
RFC
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc..
Grid Voltage
138 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
36.1K MWh
Latest Month
739.9K MWh
Annual Generation
22.6%
Capacity Factor
Jan 2022 – Dec 2024
Financial DataBeta
Source: FERC Form 1HIGH
$307/kW
Installed Cost
$31.0/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
NEEVIN · 138 kV
Substation Distance
< 10 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
MISO
LMP Node
ALTE.NEENAHG1
Pricing Hub
MICHIGAN.HUB
Location Type
Generation Node
Node Source
EIA-860 direct report
News & Articles (8)Beta
Industry·earnings
Alliant Energy (LNT) Q4 2025 Earnings Transcript
Friday, Feb. 20, 2026, 10 a.m. ET. Call participants. President and Chief Executive Officer — Lisa M. Barton; Executive Vice President and...
Alliant Energy (other)Lisa M. Barton (executive)
The Globe and Mail·3 weeks ago
Industry·corporate
Wisconsin Lands $1B Meta Data Center as Mortenson Expands Hyperscale Work
A major tech investment in Wisconsin is set to reshape local infrastructure, but its scale has raised new questions about power, water and...
Meta (other)Mortenson (other)
ENR·3 months ago
Industry·corporate
Environmental groups raise alarms over Alliant Energy's plans to convert Sheboygan plant to gas
Environmental advocates criticized Alliant Energy for its plan to transition the Edgewater plant in Sheboygan to methane gas.
Alliant Energy (operator)
Milwaukee Journal Sentinel·1 years ago
Industry·technology
Alliant Energy converting Sheboygan plant to natural gas in 2028
Alliant Energy is planning to convert its coal-burning power plant in Sheboygan into a natural gas plant in 2028.
Alliant Energy (operator)
WBAY·1 years ago
Last updated 2026-03-14
View all 8 articles