Our Business Members

RENEW has successfully advanced renewable energy throughout Wisconsin since 1991, and the financial support of our business members has been paramount to that success.


Invenergy drives innovation in energy. Invenergy is North America’s largest independent, privately held renewable energy provider. They capture, generate, and store power at scale to solve today’s energy challenges. Their portfolio includes wind energy, solar energy, energy storage, and natural gas projects, including Wisconsin’s Forward Wind Energy Center.


Ahlstrom is a global leader in fiber-based materials, supplying innovative and sustainable solutions to its customers. Our mission is to expand the role of fiber-based solutions for sustainable everyday life. Our offering includes filter materials, release liners, food and beverage processing materials, decor papers, abrasive and tape backings, electrotechnical paper, glass fiber materials, medical fiber materials, diagnostics, and energy storage solutions, as well as a range of specialty papers for industrial and consumer end-uses. Ahlstrom operates four paper mills (two integrated pulp mills) in Wisconsin and employs almost 2000 proud papermakers.

Based in Plymouth, WI, and with offices in Milwaukee and Madison, Arch has been investing in Wisconsin’s renewable energy future since 2003 by educating residents and future professionals about solar + energy storage. As a certified Women’s Business Enterprise (WBE) Arch is proud to be fostering the growth of a diverse solar workforce in Wisconsin, with over 60MW of experience installing solar, our trusted NABCEP certified staff assists homeowners, businesses, and utilities make the smart switch to renewable energy.

The Coalition for Community Solar Access is a national Coalition of businesses and non-profits working to expand customer choice and access to solar for all American households and businesses through community solar. Our mission is to empower every American energy consumer with the option to choose local, clean, and affordable community solar. We work with customers, utilities, local stakeholders, and policymakers to develop and implement policies and best practices that ensure community solar programs provide a win, win, win for all, starting with the customer.

EDP Renewables is a leading, global renewable energy company devoted to value creation, innovation and sustainability. They operate in markets around the globe and are continuously expanding our business to new regions, making the commitment to lead in each market as well as create value for our stakeholders and shareholders. As of 2017, EDP is building and will own and operate the 98 megawatt Quilt Block Wind Farm in southwest Wisconsin; the energy will be sold to Dairyland Power Cooperative.

OneEnergy Renewables, founded in 2009, is a privately held company actively developing a significant pipeline of utility scale solar projects nationwide. Pioneers of the offsite solar project model, we specialize in pre-construction development of ground mounted solar PV projects. As a certified B-Corp, OneEnergy enthusiastically embraces and meets rigorous standards of business, social, and environmental performance, accountability, and transparency.


Dimension Energy is a leader in community solar and is at the vanguard of market development. We take pride in a partnership model that connects local project communities to the global renewable energy economy.  We are driven to push our economy forward while fostering a socially responsible clean energy transition. For more information about Dimension Energy, please visit www.dimension-energy.com.

Endries Solar & Electric’s daily focus continues to be delivering unparalleled quality of service surpassing the expectations of our fellow Badger state residents. We are a full service electrical contractor, NABCEP certified professional solar installer of home and business solar energy & storage systems. From on-site analysis, custom system design through installation our team’s expertise is a constant throughout. Our team shares and supports RENEW Wisconsin’s passion for advancing towards Wisconsin’s clean energy goals.

ENGIE Distributed Renewables Development LLC provides low-cost, high-performance solar and energy storage installations and is a leading player in corporate renewable PPA solutions, serving customers in a broad range of different markets from tech, retail, utilities, universities, and airports, to municipalities and more. ENGIE’s mission is to lead the transition toward a carbon-neutral economy through reduced energy consumption and environmentally friendly solutions. ENGIE has made decarbonization and innovation a global priority across its entire suite of services. ENGIE’s global energy leadership, financial strength, extensive project development experience, and commercial expertise give ENGIE the unique ability to be a strategic partner for your clean energy needs.

Full Spectrum Solar is a renewable energy contractor serving Madison and southern Wisconsin. We design and install solar energy systems for homeowners, small businesses, large commercial clients, governmental and non-profit organizations.

Wisconsin solar energy projects Silver Maple and Northern Prairie Solar are wholly owned subsidiaries of Leeward Renewable Energy, a leading renewable energy company that owns and operates 22 renewable energy facilities across nine U.S. states. Leeward is dedicated to empowering communities through energy independence, job creation, and lasting partnerships.  Leeward is a portfolio company of OMERS Infrastructure, an investment arm of OMERS, one of Canada’s largest defined benefit pension plans.

Madison-based SunPeak is an award-winning, full-service solar PV provider specializing in the design, installation, financing, and ongoing operations and maintenance of commercial solar systems. With ISO 9001-certified processes and a focus on quality, safety, and long-term customer support, SunPeak is the trusted solar energy provider for leading companies across the nation.


Carlson Electric, LLC specializes in residential electrical, commercial electrician services, and renewable energy sources for home and business applications. Carlson Electric services customers in northern and western Wisconsin and beyond by appointment.

DVO, Inc. has been a leader in environmental engineering for over 22 years, providing proven reliable solutions for farmers.

Eagle Point Solar is committed to the deployment and installation of U.S. manufactured solar photovoltaic systems to produce emission free energy throughout the Midwest and the United States for the purpose of reducing greenhouse gases and spurring job creation and domestic economic activity.

ECA Solar develops, engineers, installs, and operates large scale renewable energy systems across the US. We have developed hundreds of acres of ground-mounted solar and over 6 million square feet of rooftop solar in 7 states. Our goal at ECA is to deploy the highest quality of solar power and energy storage projects to diversify the electric grid, while remaining risk averse and prioritizing safety.

EnTech Solutions, a division of Faith Technologies Incorporated (FTI), provides distributed energy capabilities, electric vehicle charging, innovative sustainable fuel technologies and asset management solutions for businesses looking for reliable, clean energy solutions. We utilize energy modeling and optimization software to ensure intelligent, comprehensive, and resilient electricity is delivered from an infrastructure that prioritizes the use of all available resources. We look to achieve energy independence and resiliency – for our customers, the environment, and generations to come.   

Elevate is a nonprofit organization that works nationally and is headquartered in Chicago. Elevate designs and implements programs to ensure that everyone has clean and affordable heat, power, and water in their homes and communities — no matter who they are or where they live. Our team builds strong connections in the places we work and delivers high-quality programs and services that contribute to healthy, thriving communities.

Greenpenny is a virtual and carbon-neutral bank dedicated to financing a sustainable tomorrow. Solar installers can schedule projects with confidence, knowing their residential customers can apply for pre-approved financing with reasonable terms and no money down, up to 120 days before solar installation. Financing for commercial solar projects, large and small, is also available.  Money deposited is secure, earns interest, and is only used to finance renewable energy projects. We can make a difference together. Member FDIC

Greentech Renewables is the largest solar distributor in the US. With over 80 locations nationwide, we can source what you need when you need it.  The nearest branch has inventory just down the road in Madison, WI.  At Greentech, we are here to build your supply chain, not just sell you “stuff”.  Take advantage of our local inventory, will call, and daily deliveries.

Having opened our doors in 2014, NES is the premier solar provider in Northwest Wisconsin! With over 700 systems installed throughout WI, MN, IA, CO, AZ, and MI, NES continues to provide cost-effective solar systems with expandable future options, quick payback plans, and strong, modular designs. NABCEP-certified systems are engineered for homes, businesses, farms, and cabins. We provide grid-tied turn-key solar installations, RTI (Ready to Install by the homeowner), hybrid, and off-grid energy + storage solutions.

Northwind Solar specializes in the design and installation of solar electric, solar plus storage and EV charging for residential, commercial, agricultural, and governmental customers.  In 2017, Northwind transitioned into a worker-owned cooperative.  This business model strengthens Northwind by empowering its employees and allowing a democratic approach to how Northwind operates.  We believe this model benefits not only its employees, but also its clients by ensuring that their solar installer is invested in their best interests.

At Pieper Electric, our people are our power. As a full-service electrical, mechanical and automation contractor, our people are what enable us to stand out in our industry. They’re the reason for our success. Founded on the principle that every person should strive to first and foremost be a servant leader, we work tirelessly to keep our people safe, enlighten and stimulate their minds, and teach them how to be good stewards of the community in a genuinely serving way. From these efforts, we’ve grown into a truly unique company. By putting our people first, we are able to consistently deliver to the highest quality standards in the industry and develop lasting relationships with our customers.

PRC Wind is a Midwest focused, Minnesota-based renewable energy development company that has actively developed and installed utility scale wind generation since 1997. Operating projects developed by PRC total more than 1,900 MW of capacity. The PRC team includes personnel with substantial project management and development experience. The team maintains a strong network of development services to successfully complete quality wind energy projects.

Samsung C&T America is committed to providing green energy by balancing the best interests of the partners, landowners, and community members. Since 2009, Samsung has developed and constructed more than a total of 1.39 GW of utility-scale wind and solar projects in North America. It is currently developing more than 10GW of utility-scale solar projects across the U.S. including several Midwestern States – Illinois, Michigan, Minnesota, Indiana, and Wisconsin.


Appleton Solar, LLC is a family-owned Wisconsin business. You are always dealing with an owner of Appleton Solar with every interaction. Our mission is to provide Wisconsin residents and businesses with solar energy solutions for their homes and businesses, while simplifying the process for our customers and providing exceptional customer service. We have been servicing the Fox Valley since 2008.

Bartelt Grob attorneys specialize in real estate lawbusiness law, and estate planning. They have spent over 30 years building their reputation and network throughout the Wisconsin business and legal communities.

BIOFerm is an experienced provider of turnkey renewable energy systems, including anaerobic digestion, gas upgrading, and solar energy. From project conception to commissioning, optimization, and training, BIOFerm handles every aspect of the entire process. Their range of biogas solutions allows for seamless integration into a variety of different operations, including landfills, municipalities, wastewater treatment plants, agricultural operations, and more.

At The Boor Group, we help organizations understand what the government is doing and help the government understand your organization.  If you are not advocating for your organization, we promise that your competition is advocating for theirs.

Chequamegon Bay Renewables is a 501(c)(3) nonprofit dedicated to local sustainable initiatives, primarily, but not limited to, renewable energy. Our mission is to work with multiple entities, in the spirit of cooperation and community building, to reduce reliance on fossil fuels while promoting clean water, clean air, organic foods, and healthy living. We initiate projects, resources, and education to make renewable energy more accessible in our community.

Impact Power Solutions, LLC is a full-service clean energy development company. For over 30 years, we have worked to deliver customers solutions ranging from rooftop installations to multi-megawatt community solar gardens. Our company’s purpose is, and always has been, to positively impact people, power, and the planet with solar energy.

Ingeteam is a global leader in renewable energy solutions. Since 2010, the company’s North American headquarters has been located in Milwaukee, WI. From this base of operation, Ingeteam hosts teams of engineers and technicians specializing in the support of solar, wind, hydro, and other renewable energy products.  Our production facility in Milwaukee is the only place in the U.S. where wind turbines are built by an American workforce.

McCauley Lyman LLC is a law firm focused on renewable energy transactions. We help our clients negotiate contracts, obtain permits, acquire real estate, arrange financings, and purchase and sell energy-related businesses and their assets. We pride ourselves on giving practical advice, having good judgment, and playing well with others. We’re excited to add Wisconsin to our service area in 2023, with long-time RENEW member Michael Allen in our Madison office.

Midwest Heating & Cooling installs, maintains, and services mechanical systems for residential and commercial clients. The Midwest Team strives to be the experts of choice for homeowners in Southeastern Wisconsin, whether they are looking to reduce their carbon footprint with electrification or improve the comfort of their homes. And when it comes to your home, there’s no question. You deserve the best. 

The Midwest Renewable Energy Association, based in Custer, WI, promotes renewable energy, energy efficiency, and sustainable living through education and demonstration.

Midwest Solar Power, based in Madison, designs and installs solar electric systems. Specializing in micro-inverter systems, MREA trained and certified, a Focus on Energy trade ally, with 25 years construction experience.

Northern Biogas is a full service RNG developer, producer and biogas system operator committed to supporting a sustainable energy transition through organic project development and acquisitions in dairy, food waste and landfill RNG. We leverage a large network of industry resources and an extensive background in organic waste management, dairy farm operations, and natural gas infrastructure operations to offer comprehensive biogas services at an unparalleled quality and an attractive cost.

Pines Bach LLP is an experienced and knowledgeable Madison law office serving individuals, families, businesses and organizations in diverse areas of civil and criminal law. The firm is staffed and managed with progressive, practical lawyers, diligent about meeting high expectations for civility, ethics and results.

The Sisters of St. Francis of the Holy Cross serve as parish leaders, educators, health caregivers, campus ministers, artists, minority and environmental advocates, social workers, literacy counselors, retreat directors, missionaries and administrators. With the same courage, tenacity and faithfulness as their founders, they actively engage in improving the spiritual and material condition of those with needs.

Westphal & Co
. is a fourth generation family business offering outstanding electrical and low voltage services throughout the Midwest. Our experienced Project Managers and Technicians are highly skilled with installations ranging from 20kW roof-top systems to large utility scale multi-megawatt projects.  Our engineering staff offers design, layout, and modeling services as well.  Additionally, we can help with research on tax incentives, rebates, and grants.  We look forward to working with you!


Array Energy is a solar sales company that offers industry-leading solar products that are efficient and affordable. While Array Energy serves the entire United States, its main focus is its home base, Wisconsin, where Array Energy has established partnerships with trustworthy installation crews, maintaining high-quality materials and labor, and continuously meeting Array Energy’s standard of approval. Array Energy’s mission is to provide cost-effective, customer-oriented, and tier-one solar products to homes, businesses, and institutions because everyone should be able to invest in sustainable energy that is affordable and efficient.

Drews Solar specializes in rooftop and ground-mounted residential solar installations, serving the Madison area and surrounding counties. A family-owned company, Drews Solar is committed to the highest quality craftsmanship and customer service, helping our community make the switch to renewable energy.

Elevated Solar and Electric is committed to renewable energy installations, including solar photovoltaic systems, battery storage systems, and electric vehicle charging.  We are excited to educate customers about the benefits of renewable energy!  Working directly with customers and other solar developers, we can provide installation services to anyone.  Our team has a broad range of electrical and automation experience in Residential, Commercial, and Industrial applications.

Energize LLC, located in Winneconne, Wisconsin, near Oshkosh in the Fox River Valley of Northeast Wisconsin, provides reliable and clean renewable electrical energy systems to residential, commercial, non-profit and governmental customers.

Since 1994, Energy Concepts, Inc. has been providing world-class engineering for mechanical and electrical systems in residential, commercial, and industrial buildings.

Glow Solar is a developer of turnkey solar energy systems for the agricultural, commercial, and residential sectors. Headquartered in Madison, WI, Glow takes pride in our midwestern roots and is committed to providing a seamless customer experience, focused on excellence, integrity, and respect. Regardless of the size or type of your project, the Glow team will be your partner & provide the expertise and guidance needed to achieve your goals.

JCG is an employee-owned Right of Way firm with offices in Wisconsin and Iowa that specialize in land acquisition along with landowner liaison and GPS/GIS services. We work in all aspects of the renewable industry from project development, land acquisition, and as your landowner liaison during construction. We recognize great landowner relationships during acquisition and construction can be the difference in your renewable project’s success. We are committed to Helping You Build the Future.

Legacy Solar specializes in solar energy system design and installation including solar electric and solar water heating systems. Legacy Solar has been a proud provider of clean, sustainable energy solutions for Wisconsin since 2002.

Madison Energy Investments develops, constructs, owns and operates distributed generation assets within the commercial and industrial and small utility-scale sectors. The team’s diverse experience has produced best practices across all phases of the industry from origination to asset management. Quality partnerships and the ‘execution mindset’ drive us to be the best team in the industry.

McKinstry is a national leader in designing, constructing, operating and maintaining high-performing buildings. From new construction and ongoing operations to adaptive reuse, energy retrofits and renewables, McKinstry provides a single point of accountability across the entire building lifecycle. McKinstry works with school districts, universities, municipalities, hospitals and private companies nationwide. McKinstry focuses on people and outcomes to ensure the built environment serves owners, operators and occupants alike. Our clients care about long-term planning, saving energy and driving out waste, and have sophisticated facilities that require nothing but the best. McKinstry is your trusted partner for the life of your building. Learn more at www.McKinstry.com


In 2022, Mead & Hunt joined forces with Symbiont, a nationally recognized, full-service engineering, procurement, and construction (EPC) firm, focused on waste-to-energy, water/wastewater manufacturing production process, sustainability, and environmental projects. Our renewable energy technologies provide pathways to reduce greenhouse gas emissions, power our future, and help you meet your sustainability goals. The Mead & Hunt team utilizes innovative engineering technologies to plan, design, and build engineering solutions that bring you value, advance your operations, and protect the natural environment.

PV Systems, based in Amherst, is Wisconsin’s solar pioneer with 33 years of green energy and has installed over 1,000 solar systems in Wisconsin.

Attorney Ed Ritger, at Ritger Law Office, provides legal services out of his office Random Lake, WI, which features a geothermal heating and cooling system and 5.12 kilowatts of rooftop solar photovoltaics.

Mick Sagrillo, of Sagrillo Power & Light, has worked with small wind for over 31 years.

Standard Solar, Inc. is a leading solar energy company specializing in the development and financing of solar electric systems nationwide. Dedicated to making Distributed Generation (DG) solar more accessible to businesses, institutions, governments and utilities, the company is forging the path for clean, renewable energy development through turnkey solutions. With more than 100 megawatts installed, financed and maintained, Standard Solar is one of the most trusted and respected solar companies in the US. Owned by Énergir, a leading energy provider with more than $5.8 billion US in assets, Standard Solar operates nationally and is headquartered in Rockville, Md. For more information, please visit www.standardsolar.com.

Slipstream is a mission-driven nonprofit that creates, tests, delivers and scales the next generation of energy efficiency and renewable energy programs that move us farther, faster toward a clean energy economy. Slipstream partners with utilities, local and state governments, regulatory agencies and other organizations to inspire new solutions to big energy challenges. With 39 years of experience demonstrating “what’s next” in programs and technologies, Slipstream is an established and trusted trailblazer in the industry. For more information about Slipstream visit slipstreaminc.org.

Stateline Solar is a dedicated solar installation, maintenance and repair company; serving the state-line area of Wisconsin, Illinois and Iowa. We aim to be a total energy solution, also offering the services of battery back-up systems and electric vehicle charging stations.

Synergy Renewable Systems is your local turn-key solar installer, based in Stoughton, just south of Madison. With an eye for the details, we match your energy and investment goals with the best equipment solutions. Our honest, detailed approach to system design and installation makes going solar a breeze for residential and commercial clients alike.

The Retrofit Companies, Inc. consists of two divisions that support sustainability, energy-efficiency, and recycling initiatives – founded in 1992. Retrofit Lighting and Design develops custom, turnkey lighting projects for organizations, focusing on advanced lighting solutions that maximize energy efficiency and performance. Retrofit Environmental makes complex regulated waste stewardship easy. We help organizations identify, manage, and properly dispose of regulated waste and ensure our customers remain compliant while receiving a personal customer experience.

After its quick establishment as a leader in the renewable sector, Tron Solar exploded into a rapidly growing 50+ person staff, developing a nationally recognized operations department. With a 5-Star Customer Service team and industry-leading installation and production, Tron’s foundation is set to enable us to continue serving our country with clean, productive renewable energy. Tron Solar is the leading solar energy provider across the nation for homeowners and commercial properties with over 600+ 5-Star reviews, an A+ rating with BBB, and ranked 2nd as the top solar installer residentially in the midwest.

Uihlein Electric is recognized as one of the best electrical contractors due to our extensive experience with complex construction projects involving healthcare, industrial, financial, and commercial properties.  In addition to electrical services, we specialize in renewable energies, technology solutions, building automation systems, and 24/7 emergency service and maintenance.  We are successful because we build trusted relationships and execute extreme ownership when delivering projects. This makes Uihlein Electric Wisconsin’s best resource for your electrical and technology needs.