Project Profiles

Solar PV

American Family

American Family Insurance

American Family Insurance, a multi-line insurer headquartered in Madison, Wisconsin and a Fortune 500 company, partnered with SunPeak to build the largest rooftop solar system in the state of Wisconsin at its national headquarters. The almost 1.2MW solar photovoltaic system covers a large rooftop on the corporate campus with 4,488 solar panels. This system now generates over 7% of their energy needs. Learn more about the project here.


Glacier Transit & Storage

Glacier Transit & Storage (GTS) has always exceeded customer expectations through pride, quality and experience. Now they are taking their mission one step further by producing their own clean, renewable electricity from the sun. Installed atop their 170,000 sq. ft. cold storage warehousing facility in Plymouth, Wisconsin are 2,112 solar panels. GTS now owns the largest customer-sited solar photovoltaic (PV) system on the western shore of Lake Michigan and the largest system connected to a Wisconsin municipal electric utility at an impressive 560 kW. Learn more about the project here.

Lakeland Union High School

Lakeland Union High School

This 280kWdc rooftop system comprised of 1,056 panels is the largest solar system on a Wisconsin school. SunPeak helped LUHS meet its sustainability and renewable energy goals with this system, which will offset 20% of the school's energy needs. Learn more about the project here.

Steep & Brew

Kaukauna City Municipal Building

On September 1, 2016, the rooftop solar photovoltaic (PV) system on the new Kaukauna City Hall started producing electricity. The 80.6 kilowatt (kW) solar PV system consists of panels that convert solar radiation into electricity to power the building. If extra electricity is generated, it’s added into Kaukauna Utilities’ (KU) distribution to offset purchase costs of grid-supplied electricity. It’s estimated that the system will produce approximately 100,000 kWh of electricity every year. Learn more about the project here.

Steep & Brew

2016 Wisconsin Renewable Energy Projects

Profiles of three Wisconsin Renewable Energy Projects featured in our Monthly Member Updates throughout 2016. They include Oregon School District, Dane County Buildings, and Evergreen Credit Union. To see these profiles first, sign up to be a member here! Read the full profile here here

Steep & Brew

Steep & Brew

A Greener Cup of CoffeeTM is Steep & Brew’s new tagline, since they partnered with SunPeak to add 315 roof mounted solar PV panels to their corporate office, roasting facility and distribution center on Madison’s east side. At 80kWdc capacity, this system now generates 78% of their energy consumption needs. On the rare occasion that excess energy is produced, it is sold back to the local utility. Read more here

Central Storage & Warehouse

Central Storage & Warehouse

Central Storage & Warehouse (CSW), a large refrigerated and freezer warehouse facility, partnered with SunPeak in 2015 to install the largest rooftop photovoltaic (PV) solar system in Wisconsin history. The system will produce 905,500kWh/year, offsetting 16% of CSW’s annual electrical load. The owners are excited they are now powering a good portion of their refrigeration needs with natural sunlight, thus lowering operating costs, increasing sustainability, and enhancing their competitive market differentiation. Read more here

Klismith Accounting and Tax Group

Klismith Accounting and Tax Group

Klismith Accounting and Tax Group in Plover, WI, partnered with Northwind Renewable Energy to install a 37.5 kW solar system. Read more here

Ale Asylum Solar Installation

Ale Asylum Brewery

Ale Asylum, Madison's local brewing sensation and the producer of its famous Hopalicious™ American pale ale, partnered with SunPeak to install a 100 kWac rooftop photovoltaic solar system atop its new manufacturing facility near the Dane County Airport. Read more here

Corrim Company

Corrim Company

For over 30 years the Corrim Company has been America’s premier industrial fiberglass door and frame system manufacturer. Corrim is prominent leader in sustainable initiatives including geothermal heating and cooling, LED lighting, state of the art HVAC systems and robust recycling programs. They privately constructed five 20kW wind turbines in 2010 on their property and in 2015 partnered with SunPeak to add 360 ground-mounted solar PV panels. Read more here

Letterhead Press

Letterhead Press, Inc.

Letterhead Press, Inc. is a national graphics arts leader specializing in a number of enhanced printing applications. In 2015 the company partnered with SunPeak to build one of the largest solar systems in the state at its headquarters in New Berlin, WI. The 337kWdc ground-mount photovoltaic system covers a formerly unused parking lot with 1,320 total modules. Read more here

Reynolds Transfer & Storage

Reynolds Transfer & Storage

The Reynolds Family has been proudly serving the greater Madison, WI community since 1888. Encouraged by the youngest generation in the family business, the company was seeking additional ways to demonstrate their commitment to sustainability, while reducing operating costs. SunPeak approached Reynolds to explain the current federal and state financial incentives to solarize their roof, and the long term benefits to their company including energy independence and reducing their carbon footprint. Read more about the 48kWdc project here

Northwest Renewable Energy Learing Center

Solar is Blooming in Northwest Wisconsin

Carol Johnson visits new PV systems at Crystal Ball Farms, Northwest Renewable Energy Learning Center, and Common Harvest Farm. Read more here

Aldo Leopold Center

Aldo Leopold Legacy Center

"The Land Ethic in Physical Form: How can we ensure that both people and the land will prosper in the long run?” Read more here

Central Waters

Central Waters Brewing Company

Truly making the world a better place, one beer at a time. Read more here

Cottage Glen logo

Cottage Glen at Ellison Bay

“Door County development with a respect for natural beauty and a commitment to the environment.” Read more here

Project SOARR

Project SOARR - Supporting Opportunities in Advancing Renewable Resources

“Doing good by going green: Inspiring the next generation of green leaders” Read more here

Helene's Hilltop Orchard

Helene’s Hilltop Orchard

“Doing Double Duty, the Sun Produces Delicious Apples and Power for Helene’s Hilltop Orchard”. Read more here

Madison Solar

Madison Residence 2014

This case study describes one family's participation in H&H Solar's Solar Homes Partnership, a group buy program that generates a stream of revenue supporting the John Muir Chapter of the Sierra Club. Read more here

Solar Thermal

Platteville Solar Hot Water Heater

Solar Hot Water in Platteville

Says Nancy Collins: “We want our children to grow up thinking that it’s normal for families to harvest solar energy.” Read more here

Fort Atkinson High School swimming pool

Fort Atkinson School District

School officials have made no secret of their aspiration to make Fort Atkinson the most energy-efficient and self-sufficient K-12 district in the state. Read more here

Sun Harvest Farm

Sun Harvest Farm

"In 2005 we embarked on major renovations and additions to our old farmhouse." Jerry and Penny Kroener of Ridgeway, WI, improved the efficiency of their farmhouse, installed two solar PV systems, and a counter-flow masonry heater fireplace. Read more here

Wigwam Mills

Wigwam Mills

Placed in service in February 2008, Wigwam’s 27 solar collectors supply 47 percent of the hot water used by the company to shrink, bleach, antimicrobial treat, wash and soften 40,000 pairs of socks each day. Read more here

Madison Fire station

Madison Fire Stations

Solar hot water douses rising energy costs at Madison Fire stations. Read more here

Park Central Apartments

Park Central Apartments

Solar hot water systems for multifamily buildings. Read more here

Osceola High School

Osceola Middle School

Solar-heated pool passes the test at Osceola school. Read more here or view the Focus on Energy case study.

Small Wind Projects

Wind turbine


“Wind-powered education in southwest Wisconsin”. Read more here

Wind turbine

Preder Farm

Sustainable family farm operation powered by renewable wind energy. Read more here

Fountain Prairie Inn & Farms

A genuine portrait of the Wisconsin farmer… where sustainable farming, environmental stewardship, and productive business are one and the same”. Read more here

Port of Milwaukee

“The City of Milwaukee’s First Wind Turbine Harvests Clean Energy on the Shores of Lake Michigan”. Read more here

Learn more about the project and see live production data at the City of Milwaukee's website See also the Facebook post regarding the project's two-year aniversary.

Biogas Projects

Forest County Potawatomi Community (FCPC) Renewable Generation, LLC., Biodigester

This waste-to-energy project, the first of its kind in the Milwaukee-area and one of the largest in the Midwest, takes high strength liquid residuals which were previously handled as a waste stream from food and beverage industries and utilizes these residuals to generate electricity and heat. Read more here or see Tom Content's article in the Milwaukee Journal Sentinel.


“University develops nation’s first dry fermentation anaerobic digester.” Read more here

Pagel’s Ponderosa Dairy

Wisconsin’s Largest Family-Owned Dairy Converts Manure into Useful Energy for the Farm and Surrounding Communities. Read more here

GreenWhey Energy

“We’re removing about 1,000 pounds of phosphorus from the wastewater everyday,” says Eric Ludy, Quality Assurance Manager at GreenWhey. Read more here. An additional article is available at St. Croix 360.

Additional Case Studies

Wisconsin K-12 Schools with Renewable Energy Systems

From 2009-2011, with funding from Focus on Energy, KEEP conducted a survey of every school district in Wisconsin to learn which schools have renewable energy systems installed on their buildings, the types of systems (including biomass, geothermal, solar photovoltaic (PV), solar thermal and wind), and if possible number and size. Find the full report and summary here.

Down on the Farm with Clean Energy

“Down on the Farm,” a new report by Clean Wisconsin, highlights five farmers around the state who have invested in clean energy. From manure digesters to wind turbines, these technologies can help farmers reduce costs, stabilize profit margins, minimize their impact on the environment and turn farm waste into a valuable commodity. . Read more here

Milwaukee Public Library Rooftop Goes Solar

In the 1890's, the expansive rooftop of Milwaukee Public Library was designed simply to keep out the weather. Over a century later, Milwaukee's visionaries decided to turn 30,000 sq. ft. of the library’s roof into a green roof full of rainwater-loving plants—and a solar power plant. Read more here

Madison's Solar America City Program

Madison was designated by the U.S.Department of Energy (DOE) on June 20, 2007, as a Solar America City. Madison has been an excellent place to showcase solar energy in Wisconsin, even prior to receiving assistance through the Solar America Cities partnership. Read more here

Milwaukee's Solar America City Program

The City of Milwaukee was designated by the U.S. Department of Energy (DOE) on March 28, 2008, as a Solar America City. At the start of its engagement in the Solar America Cities program, Milwaukee was developing a focus on climate protection, having signed the Mayors’ Climate Protection Agreement and having formed the Office of Environmental Sustainability as a cabinet-level office within the city. Read more here