Asbestos Exposure at We Energies Edgewater Power Plant — Sheboygan, Wisconsin

Former Workers and Families: What You Need to Know About Mesothelioma Risk

If you or a loved one worked at the Edgewater Power Plant in Sheboygan, Wisconsin, and has been diagnosed with mesothelioma, asbestosis, or another asbestos-related disease, you may have legal rights — but those rights are strictly time-limited under Wisconsin law.

⚠️ CRITICAL WISCONSIN FILING DEADLINE WARNING Under Wis. Stat. § 893.54, Wisconsin imposes a three-year statute of limitations on asbestos-related personal injury claims. This deadline runs from the date of your diagnosis — not the date of your exposure, which may have occurred decades ago. If you were diagnosed with mesothelioma, asbestosis, or lung cancer linked to asbestos exposure, the clock is already running. Missing this deadline means permanently losing your right to pursue compensation in Wisconsin civil court — no exceptions. Call a Wisconsin asbestos attorney today. Every day you wait is a day closer to losing your rights forever.

Workers at this facility may have been exposed to asbestos-containing materials from manufacturers including Johns-Manville, Owens Corning, Eagle-Picher, Garlock Sealing Technologies, Armstrong World Industries, and W.R. Grace across multiple decades of operation, from the 1950s through the 2010s. This article covers the facility’s history, which asbestos-containing products were allegedly used, which trades faced the highest exposure risk, how mesothelioma develops, and what legal remedies are available to victims and their families under Wisconsin law.

Facility Overview and Construction History
Why Coal-Fired Power Plants Used Asbestos-Containing Materials
Timeline: When Asbestos-Containing Materials Were Reportedly Used
Trades and Workers at Risk for Asbestos Exposure
Asbestos-Containing Products Allegedly Present at Edgewater
Named Manufacturers of Asbestos-Containing Products
How Workers Were Exposed — and Secondary Exposure Risks
Asbestos-Related Diseases: Mesothelioma, Asbestosis, and Lung Cancer
Your Legal Options: Lawsuits, Claims, and Settlements
Wisconsin Mesothelioma Settlement Potential and Compensation
Frequently Asked Questions

Facility Overview and Construction History

The Edgewater Power Plant: A Major Wisconsin Energy Facility

The Edgewater Power Plant sits on the western shore of Lake Michigan in Sheboygan, Wisconsin, and operated as one of Wisconsin’s largest coal-fired generating stations for more than seven decades. Originally developed by Wisconsin Electric Power Company — now We Energies, a subsidiary of WEC Energy Group — the Edgewater facility went through multiple expansions and unit additions throughout its operating life.

Edgewater was not an isolated industrial site. It was part of a broader Wisconsin industrial economy that included major manufacturing operations throughout the state — including Allen-Bradley in Milwaukee, Allis-Chalmers in West Allis, Falk Corporation in Milwaukee, and A.O. Smith in Milwaukee — all of which required the same types of high-temperature industrial insulation and steam systems that reportedly incorporated asbestos-containing materials during the same era. Skilled tradespeople frequently moved between these facilities, meaning workers who may have been exposed at Edgewater may also have encountered asbestos-containing materials at other Wisconsin worksites.

Five Generating Units: Construction Timeline and Capacity

The plant’s five generating units came online in phases:

Unit 1 – Early 1950s
Unit 2 – Mid-1950s
Unit 3 – Late 1950s
Unit 4 – 1969 (330+ megawatts)
Unit 5 – 1985 (approximately 380 megawatts)

Units 1 through 3 were retired years ago. Unit 4 was retired in 2015 under regulatory and market pressure. Unit 5 — one of the largest single generating units in Wisconsin — continued operating into the 21st century before transitioning under state clean energy policy.

Hundreds of Workers: Trades and Employment Categories

Throughout its operational life, Edgewater employed hundreds of skilled tradespeople, utility workers, maintenance personnel, and outside contractors, including members of the Heat and Frost Insulators Local 1, Boilermakers Local 107, IBEW Local 494, Asbestos Workers Local 19, and Pipefitters Local 601 — Wisconsin union locals whose members’ work put them in direct contact with the plant’s infrastructure. That infrastructure included:

Miles of insulated piping
Massive steam boilers operating at extreme temperatures and pressures
Turbine-generator sets
Heat exchange equipment
Feedwater heaters and condensers

For much of the plant’s history, these components reportedly incorporated asbestos-containing materials manufactured by Johns-Manville, Owens-Illinois, and Eagle-Picher.

Why Coal-Fired Power Plants Used Asbestos-Containing Materials

Extreme Operating Conditions Demand Insulation

A coal power plant burns pulverized coal to heat water, generating high-pressure steam exceeding 1,000°F that drives massive turbines connected to electrical generators. Every pipe, valve, fitting, flange, pump, and vessel in this system required insulation to:

Maintain thermal efficiency by preventing heat loss
Protect workers from severe burn injuries
Prevent condensation that would cause catastrophic turbine damage
Meet engineering specifications for power generation output

Why Asbestos Was the Material of Choice

For most of the twentieth century, asbestos was the dominant material for thermal insulation in industrial power generation. Asbestos mineral fibers — particularly chrysotile (white asbestos) and amosite (brown asbestos) — offered superior thermal resistance, fire protection, high tensile strength, chemical resistance, and long service life under extreme conditions.

Virtually every major component in coal-fired steam plants was insulated with asbestos-containing materials during the construction era spanning the 1940s through the late 1970s. Johns-Manville and Owens-Illinois dominated the thermal insulation market during this period, and their products were reportedly present throughout Wisconsin’s industrial facilities — from power plants like Edgewater in Sheboygan to major manufacturing campuses in Milwaukee and the Fox Valley.

Regulatory Gap: OSHA Standards Came Late

OSHA did not establish enforceable asbestos exposure standards until 1972. Meaningful restrictions on asbestos use in thermal insulation did not take effect until the mid-to-late 1970s and 1980s.

Workers who built, operated, and maintained Edgewater during its most intensive construction and early operational phases worked in environments where asbestos-containing materials were allegedly used extensively, often with no respiratory protection. Wisconsin workers at this facility — like their counterparts at Allis-Chalmers in West Allis and Falk Corporation in Milwaukee — had no meaningful regulatory protection for decades.

Timeline: When Asbestos-Containing Materials Were Reportedly Used

Based on the construction timeline of the Edgewater Power Plant, industry-wide practices documented in litigation and regulatory records, and occupational health research, asbestos-containing materials were reportedly incorporated into the facility across multiple construction and maintenance phases.

Original Construction Era (1950s–1960s)

Units 1, 2, and 3 Construction

Workers at this facility may have been exposed to asbestos-containing materials during the initial construction of Units 1 through 3. This period coincided with universal use of asbestos-containing pipe covering, block insulation, cement, and gasket materials from manufacturers including Johns-Manville, Owens-Illinois, Armstrong World Industries, and Eagle-Picher.

Products allegedly present at the facility during this era include:

Kaylo block insulation (Johns-Manville) — used for high-temperature boiler and furnace insulation
Magnesia pipe covering containing asbestos fibers (Owens-Illinois, Johns-Manville)
Asbestos cement products used for finishing and protection (Owens-Illinois, Eagle-Picher)
Asbestos rope and gasket materials (Garlock Sealing Technologies and others)

Insulators, pipefitters, boilermakers, and construction laborers on these units may have encountered asbestos-containing materials daily. Maintenance workers who later serviced Units 1–3 encountered pre-installed asbestos-containing insulation that remained in place for decades. Members of Asbestos Workers Local 19 and Boilermakers Local 107 who performed this work in Wisconsin during this era were among those most frequently alleged to have been exposed to these materials at facilities throughout the state.

Unit 4 Construction and Commissioning (Late 1960s)

A Major Expansion with Reported Asbestos Use

The construction of Unit 4, a 330+ megawatt boiler completed approximately 1969, allegedly involved substantial quantities of asbestos-containing insulation from major manufacturers. Utility-scale boiler installations of this era routinely incorporated:

Kaylo block insulation (Johns-Manville) — rated for extreme high-temperature applications
Magnesia pipe covering with asbestos fibers (Owens-Illinois, Johns-Manville, Eagle-Picher)
Thermobestos asbestos cement finishing materials — applied to boiler settings and equipment surfaces
Aircell block insulation (Eagle-Picher) — high-temperature insulation product
Woven asbestos fabric (W.R. Grace, Johns-Manville) — used around high-temperature components, boiler penetrations, and expansion joints

Contractors and tradespeople who worked on Unit 4’s construction — including members of Pipefitters Local 601, IBEW Local 494, and the Heat and Frost Insulators — may have been exposed to asbestos-containing materials throughout this phase.

Decades of Maintenance and Repair (1950s–1980s and Beyond)

Ongoing Asbestos Disturbance

After asbestos-containing materials began to be phased out of new construction in the late 1970s, existing insulation at Edgewater remained in place and was routinely disturbed during:

Pipe re-insulation work using products including Kaylo (Johns-Manville), Aircell (Eagle-Picher), and Monokote fireproofing
Boiler tube repairs and replacements
Turbine overhauls, during which asbestos-containing gaskets (Garlock Sealing Technologies) and insulation were accessed
Valve replacements and steam line repairs
Equipment modifications involving both pre-existing asbestos-containing materials and residual products from legacy manufacturers

Workers — including members of Boilermakers Local 107 and Pipefitters Local 601 who traveled between Edgewater and other Wisconsin industrial sites — who performed or worked near this maintenance activity may have been exposed to airborne asbestos fibers released during removal, cutting, and reinstallation of insulation.

Unit 5 Construction (Early 1980s)

The Final Major Unit: Declining but Continued Asbestos Use

Unit 5 came online in 1985. Construction began in the early 1980s, when asbestos use in industrial applications was declining but not eliminated. Certain high-temperature gaskets, packing materials, and specialty insulation products containing asbestos — including Superex packing (W.R. Grace and others) and residual Monokote fireproofing products — were still reportedly used in power plant construction into the early-to-mid 1980s. Insulators and pipefitters involved in Unit 5’s construction, including members of IBEW Local 494 and Pipefitters Local 601, may have been exposed to asbestos-containing materials during this phase.

Trades and Workers at Risk for Asbestos Exposure

Not every person who worked at Edgewater faced the same

We Energies Edgewater Power Plant