EPA Air · stack tests by state, industry and year

Utilities (NAICS 2211): stack tests in Wisconsin, 2026

78Stack tests

A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row is one stack test recorded during 2026 at a Wisconsin source whose primary industry code is NAICS 2211. A facility filing more than one industry code is counted under the first one on its record.

Utilities (NAICS 2211) in Wisconsin, other years

Other industries in Wisconsin, 2026

Air-emissions stack tests recorded in Wisconsin, 2026

Date	Facility	Where	Kind	Agency
2026-09-22	WISCONSIN ELECTRIC POWER COMPANY (DBA WE ENERGIES) - ROTHSCHILD BIOMASS COGENERA — high-priority violation on file	ROTHSCHILD, Marathon, WI	Pass	State
2026-08-13	DAIRYLAND POWER COOP ALMA SITE	ALMA, Buffalo, WI	Pass	State
2026-08-13	DAIRYLAND POWER COOP ALMA SITE	ALMA, Buffalo, WI	Pass	State
2026-08-12	WISCONSIN ELECTRIC POWER COMPANY (DBA WE ENERGIES) - ROTHSCHILD BIOMASS COGENERA — high-priority violation on file	ROTHSCHILD, Marathon, WI	Pass	State
2026-08-11	XCEL ENERGY BAY FRONT GENERATING STATION	ASHLAND, Ashland, WI	Pass	State
2026-08-11	WI PUBLIC SERVICE CORP - JP PULLIAM PLANT	GREEN BAY, Brown, WI	Pass	State
2026-08-11	NORTHERN STATES PWR CO WHEATON GEN STA	EAU CLAIRE, Chippewa, WI	Pass	State
2026-08-10	DAIRYLAND POWER COOP ALMA SITE	ALMA, Buffalo, WI	Pass	State
2026-08-04	ROCKGEN ENERGY CENTER — high-priority violation on file	CAMBRIDGE, Dane, WI	Pass	State
2026-08-03	XCEL ENERGY BAY FRONT GENERATING STATION	ASHLAND, Ashland, WI	Pass	State
2026-08-03	WISCONSIN PUBLIC SERVICE CORP-WEST MARIN	PESHTIGO, Marinette, WI	Pass	State
2026-08-03	WISCONSIN PUBLIC SERVICE CORP-WEST MARIN	PESHTIGO, Marinette, WI	Pass	State
2026-08-03	WISCONSIN PUBLIC SERVICE CORP-WEST MARIN	PESHTIGO, Marinette, WI	Pass	State
2026-07-28	MANITOWOC PUBLIC UTILITIES	MANITOWOC, Manitowoc, WI	Pass	State
2026-07-28	WE ENERGIES-OAK CREEK POWER PLANT — high-priority violation on file	OAK CREEK, Monroe, WI	Pass	State
2026-07-28	WE ENERGIES-OAK CREEK POWER PLANT — high-priority violation on file	OAK CREEK, Monroe, WI	Pass	State
2026-07-22	WE ENERGIES-OAK CREEK POWER PLANT — high-priority violation on file	OAK CREEK, Monroe, WI	Pass	State
2026-07-22	WE ENERGIES-OAK CREEK POWER PLANT — high-priority violation on file	OAK CREEK, Monroe, WI	Pass	State
2026-07-21	DAIRYLAND POWER ELK MOUND GEN FACILITY	ELK MOUND, Chippewa, WI	Pass	State
2026-07-21	WE ENERGIES-OAK CREEK POWER PLANT — high-priority violation on file	OAK CREEK, Monroe, WI	Pass	State
2026-07-21	WE ENERGIES-OAK CREEK POWER PLANT — high-priority violation on file	OAK CREEK, Monroe, WI	Pass	State
2026-07-13	WI PUBLIC SERVICE WESTON POWER PLANT	KRONENWETTER, Marathon, WI	Pass	State
2026-07-13	WI PUBLIC SERVICE WESTON POWER PLANT	KRONENWETTER, Marathon, WI	Pass	State
2026-07-13	WI PUBLIC SERVICE WESTON POWER PLANT	KRONENWETTER, Marathon, WI	Pass	State
2026-07-13	WI PUBLIC SERVICE WESTON POWER PLANT	KRONENWETTER, Marathon, WI	Pass	State
2026-07-13	WI PUBLIC SERVICE WESTON POWER PLANT	KRONENWETTER, Marathon, WI	Pass	State
2026-07-13	WE ENERGIES-OAK CREEK POWER PLANT — high-priority violation on file	OAK CREEK, Monroe, WI	Pass	State
2026-07-13	WE ENERGIES-OAK CREEK POWER PLANT — high-priority violation on file	OAK CREEK, Monroe, WI	Pass	State
2026-07-13	WPL - NEENAH GENERATING FACILITY — high-priority violation on file	NEENAH, Winnebago, WI	Pass	State
2026-07-08	WE ENERGIES-OAK CREEK POWER PLANT — high-priority violation on file	OAK CREEK, Monroe, WI	Pass	State
2026-07-07	WPL - SHEBOYGAN FALLS ENERGY FACILITY	PLYMOUTH, Taylor, WI	Pass	State
2026-07-06	WE ENERGIES-OAK CREEK POWER PLANT — high-priority violation on file	OAK CREEK, Monroe, WI	Pass	State
2026-07-06	WE ENERGIES-OAK CREEK POWER PLANT — high-priority violation on file	OAK CREEK, Monroe, WI	Pass	State
2026-07-06	WE ENERGIES - VALLEY POWER PLANT	MILWAUKEE, Monroe, WI	Pass	State
2026-06-30	WI PUBLIC SERVICE WESTON POWER PLANT	KRONENWETTER, Marathon, WI	Pass	State
2026-06-29	WI PUBLIC SERVICE WESTON POWER PLANT	KRONENWETTER, Marathon, WI	Pass	State
2026-06-24	WI PUBLIC SERVICE WESTON POWER PLANT	KRONENWETTER, Marathon, WI	Pass	State
2026-06-24	WPL - EDGEWATER GENERATING STATION	SHEBOYGAN, Taylor, WI	Pass	State
2026-06-23	MG&AMP;E WEST CAMPUS COGENERATION FTY	MADISON, Dane, WI	Pass	State
2026-06-23	WI PUBLIC SERVICE WESTON POWER PLANT	KRONENWETTER, Marathon, WI	Pass	State
2026-06-23	WI PUBLIC SERVICE WESTON POWER PLANT	KRONENWETTER, Marathon, WI	Pass	State
2026-06-23	WI PUBLIC SERVICE WESTON POWER PLANT	KRONENWETTER, Marathon, WI	Pass	State
2026-06-23	WI PUBLIC SERVICE WESTON POWER PLANT	KRONENWETTER, Marathon, WI	Pass	State
2026-06-22	WI PUBLIC SERVICE WESTON POWER PLANT	KRONENWETTER, Marathon, WI	Pass	State
2026-06-22	WPL - EDGEWATER GENERATING STATION	SHEBOYGAN, Taylor, WI	Pass	State
2026-06-18	DAIRYLAND POWER COOP ALMA SITE	ALMA, Buffalo, WI	Pass	State
2026-06-16	DAIRYLAND POWER COOP ALMA SITE	ALMA, Buffalo, WI	Pass	State
2026-06-13	WISCONSIN ELECTRIC POWER COMPANY D/B/A WE ENERGIES-PARIS GENERATING STATION	UNION GROVE, Kenosha, WI	N/A	State
2026-06-10	WPL-SOUTH FOND DU LAC COMBUSTION TURBINE SITE	FOND DU LAC, Fond du Lac, WI	Pass	State
2026-06-09	WISCONSIN ELECTRIC POWER COMPANY (DBA WE ENERGIES) - ROTHSCHILD BIOMASS COGENERA — high-priority violation on file	ROTHSCHILD, Marathon, WI	Pass	State
2026-06-09	WISCONSIN PUBLIC SERVICE CORPORATION - F	KAUKAUNA, Outagamie, WI	Pass	State
2026-06-09	WISCONSIN PUBLIC SERVICE CORPORATION - F	KAUKAUNA, Outagamie, WI	Pass	State
2026-06-09	WPL - RIVERSIDE ENERGY CENTER	BELOIT, Rusk, WI	Pass	State
2026-06-09	WPL - RIVERSIDE ENERGY CENTER	BELOIT, Rusk, WI	Pass	State
2026-06-05	WE ENERGIES - WHITEWATER GENERATING STATION	WHITEWATER, Jefferson, WI	Pass	State
2026-05-27	WE ENERGIES-OAK CREEK POWER PLANT — high-priority violation on file	OAK CREEK, Monroe, WI	Pass	State
2026-05-26	MARSHFIELD UTILITIES COMBUSTION TURBINE	MARSHFIELD, Wood, WI	Pass	State
2026-05-19	WE ENERGIES PORT WASHINGTON GENERATING STATION	PORT WASHINGTON, Pepin, WI	Pass	State
2026-05-15	WPL - SHEBOYGAN FALLS ENERGY FACILITY	PLYMOUTH, Taylor, WI	Pass	State
2026-05-15	WPL - SHEBOYGAN FALLS ENERGY FACILITY	PLYMOUTH, Taylor, WI	Pass	State
2026-05-11	WPL - RIVERSIDE ENERGY CENTER	BELOIT, Rusk, WI	Pass	State
2026-05-04	WPL - NEENAH GENERATING FACILITY — high-priority violation on file	NEENAH, Winnebago, WI	Pass	State
2026-05-04	WPL - NEENAH GENERATING FACILITY — high-priority violation on file	NEENAH, Winnebago, WI	Pass	State
2026-04-21	VIRESCO TURTLE LAKE — high-priority violation on file	TURTLE LAKE, Barron, WI	Pass	State
2026-04-14	ALLIANT ENERGY - WPL - COLUMBIA ENERGY CENTER	PARDEEVILLE, Columbia, WI	Pass	State
2026-04-13	ALLIANT ENERGY - WPL - COLUMBIA ENERGY CENTER	PARDEEVILLE, Columbia, WI	Pass	State
2026-04-13	WE ENERGIES-OAK CREEK POWER PLANT — high-priority violation on file	OAK CREEK, Monroe, WI	Pass	State
2026-04-13	WE ENERGIES-OAK CREEK POWER PLANT — high-priority violation on file	OAK CREEK, Monroe, WI	Pass	State
2026-04-13	WE ENERGIES - VALLEY POWER PLANT	MILWAUKEE, Monroe, WI	Pass	State
2026-04-07	ALLIANT ENERGY - WPL - COLUMBIA ENERGY CENTER	PARDEEVILLE, Columbia, WI	Pass	State
2026-04-07	XCEL ENERGY - FRENCH ISLAND GENERATING PLANT	LA CROSSE, La Crosse, WI	Pass	State
2026-04-06	ALLIANT ENERGY - WPL - COLUMBIA ENERGY CENTER	PARDEEVILLE, Columbia, WI	Pass	State
2026-02-10	NORTHERN STATES PWR CO WHEATON GEN STA	EAU CLAIRE, Chippewa, WI	Fail	State
2026-02-03	XCEL ENERGY - FRENCH ISLAND GENERATING PLANT	LA CROSSE, La Crosse, WI	Pass	State
2026-02-02	NORTHERN STATES PWR CO WHEATON GEN STA	EAU CLAIRE, Chippewa, WI	Pass	State
2026-01-20	ALLIANT ENERGY - WPL - COLUMBIA ENERGY CENTER	PARDEEVILLE, Columbia, WI	Pass	State
2026-01-19	WE ENERGIES-OAK CREEK POWER PLANT — high-priority violation on file	OAK CREEK, Monroe, WI	Pass	State
2026-01-19	WE ENERGIES-OAK CREEK POWER PLANT — high-priority violation on file	OAK CREEK, Monroe, WI	Pass	State

Primary NAICS code as filed on the facility record; dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.

What this page shows

The EPA air register page covers Clean Air Act facilities with stack tests in WI for NAICS industry 2211 in 2026. The page lists 51 stack tests recorded in 2026.