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5 MW BESS operating in Columbia, WI
5 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2022
Operating Since
Coordinates
43.5521, -89.4877
County
Columbia, WI
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Wisconsin Power & Light Co | — | — |
| Owner(s) | Wisconsin Power & Light Co | — | — |
| Status | Operating | — | — |
Portage Industrial Battery is a 5 MW battery energy storage system (BESS) located in Columbia County, Wisconsin. The plant, which began operating in 2022, is owned and operated by Wisconsin Power & Light Co. It consists of a single generator utilizing lithium-ion battery (LIB) chemistry. The facility has a total storage capacity of 10 MWh, providing a duration of 2 hours at its full power output. The plant's primary fuel type is listed as "MWH" in regulatory filings, indicating that it draws power from the grid to charge its batteries.
The Portage Industrial Battery operates within the Midcontinent Independent Transmission System Operator (MISO) market and balancing authority. It is ranked as the 6th largest of 8 battery storage facilities in Wisconsin, and 961st nationally out of 1205 such plants. Financial data indicates an installed cost of $1199.67 per kW, as reported to FERC. The plant is located within the Midwest Reliability Organization (MRO) NERC region.
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
12.47 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
−48 MWh
Net Charging
-500 MWh
Annual Net Energy
-1.1%
Capacity Factor
Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.
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Wisconsin Power and Light Company · Data from 2022
$1,200/kW
Installed Cost
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Market Position
ISO/RTO Market
MISO
LMP Node
ALTE.PPKC.ESR1
Pricing Hub
MICHIGAN.HUB
Alt. Hub / Zone
ILLINOIS.HUB
Location Type
Generation Node
Node Source
EIA-860 direct report
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
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