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727.6 MW Natural Gas Fired Combined Cycle (723 MW) + Solar Photovoltaic (4 MW) operating in Rock, WI — Midcontinent Independent Transmission System Operator, Inc..
727.6 MW
Nameplate Capacity
4
Generators
units
Hybrid (2)
Technology
Natural Gas Fired Combined Cycle + Solar Photovoltaic
2020
Operating Since
Coordinates
42.5821, -89.0412
County
Rock, WI
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Wisconsin Power & Light Co | Wisconsin Power and Light | — |
| Owner(s) | Adams-Columbia Electric Coop, Central Wisconsin Elec Coop, Madison Gas & Electric Co, Rock Energy Cooperative, Wisconsin Electric Power Co, Wisconsin Power & Light Co | Central Wisconsin Electric Cooperative Inc; Rock Energy Cooperative; Wisconsin Power and Light Co; Adams-Columbia Electric Cooperative | — |
| Status | Operating | operating | — |
West Riverside Energy Center is a 727.6 MW hybrid power plant located in Rock County, Wisconsin. The plant, which began operating in 2020, is owned and operated by Wisconsin Power & Light Co. It utilizes natural gas fired combined cycle technology along with solar photovoltaic generation. The solar portion of the plant uses single-axis tracking. West Riverside Energy Center is connected to the Midcontinent Independent Transmission System Operator, Inc. balancing authority and resides within the MRO NERC region.
The plant's latest annual generation was 4,367,001 MWh, resulting in a capacity factor of 68.7%. With a total of four generators, West Riverside Energy Center is ranked as the 3rd largest power plant out of 19 in Wisconsin, and 290th out of 945 nationally. Financial data indicates an installed cost of $1025.19 per kW, based on FERC filings.
Generated from EIA, GEM, and public data sources
ISO/RTO
MISO
Market
ISO/RTO Member
NERC Region
MRO — Midwest Reliability Organization
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc.. (MISO)
Grid Voltage
345.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
413.9K MWh
Latest Month
4.4M MWh
Annual Generation
68.7%
Capacity Factor
CO₂ Intensity
776 lb/MWh
NOx
2 lb/MWh
SO₂
0.004 lb/MWh
CH₄
0.015 lb/MWh
N₂O
0.001 lb/MWh
Capacity Factor
66.8%
Annual Net Gen
4259 GWh
CO₂eq
776 lb/MWh
Subregion
MRO East
Data from 2020–2024
$25.9/MWh
Energy Value
$2.3/MWh
Capacity Value
Market Position
ISO/RTO Market
MISO
LMP Node
ALTE.CC.WRIVS1
Pricing Hub
MICHIGAN.HUB
Alt. Hub / Zone
ILLINOIS.HUB
Location Type
Generation Node
Node Source
EIA-860 direct report
Last updated 2026-03-26
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