Where is Island Street Peaking Plant?

In Outagamie County, Wisconsin (WI). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.

How big is Island Street Peaking Plant?

61 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.

Who owns Island Street Peaking Plant?

EIA-860M names WPPI Energy as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.

Is this the same as Island Street Peaking Plant LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — WPPI Energy here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Island Street Peaking Plant LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Island Street Peaking Plant still running?

EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.

Island Street Peaking Plant

Island Street Peaking Plant is a 61 MW natural gas power plant in Outagamie County, Wisconsin, operated by WPPI Energy. EIA-860M lists 1 generating unit here, inside MISO. Its unit entered service in 2004.

As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m

Nameplate capacity: 60.5 MW; 54.6 MW net summer
Generating units: 1
In service: 2004
EIA plant ID: 55836

Where it is

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County: Outagamie County, Wisconsin
Coordinates: 44.2761, -88.2658
Balancing authority: MISO
Sector: Electric Utility

Units, technology and status

Operator of record: WPPI Energy
Primary energy source: Natural gas
Technologies: Natural Gas Fired Combustion Turbine
Status: Operating

Every plant WPPI Energy reports to EIA →

Island Street Peaking Plant: FAQ

Where is Island Street Peaking Plant?: In Outagamie County, Wisconsin (WI). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
How big is Island Street Peaking Plant?: 61 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
Who owns Island Street Peaking Plant?: EIA-860M names WPPI Energy as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
Is this the same as Island Street Peaking Plant LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — WPPI Energy here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Island Street Peaking Plant LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Island Street Peaking Plant still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.