Since 1901, H&H Group Holdings, including several of its service offerings, has been providing successful project outcomes in the areas of Solar, Electric, Plumbing, Energy and Building Automation to contractors, developers, businesses and enterprises throughout the U.S. With a leadership team committed to problem solving and thought leadership, and technical and service teams steadfast in their beliefs about driving results through dependability, knowledge and experience, H&H Group Holdings remains at the forefront of innovation, invention and ingenuity.


  • Bill Howe


    Bill is the President of H&H Group Holdings and has nearly 30 years of experience in the construction, solar, voice/data, fiber optics and energy services industries. Trained as a Master Electrician, Bill started with the company in 1990 and has worked in both the residential and commercial fields before moving to the position of Vice President of Operations. Having been involved in every aspect of the business, Bill has a customer-first perspective that is unwavering.

  • Adam Hanson

    Chief Financial Officer

    Adam has spent his entire working life in the financial sector since graduating with his MBA from Marquette University. He has held top-level financial positions in some of Wisconsin’s largest accounting firms including Wipfli LLP. In his role as CFO at H&H Group Holdings, Adam has responsibilities for all financial and administrative aspects of the company and serves on the internal committee that reviews all proposal estimates and project cost accounting disciplines.

  • Katherine Ress

    General Council

    Katherine serves as the Corporate Council for H&H Holdings and has held the position for over three years. She is a graduate of the John Marshall Law School in Chicago, IL and has worked at several law firms in Chicago and Madison. Katherine has also served as a clerk on the Wisconsin Supreme Court. At H&H Holdings, she is active in the legal activities of all company departments including contracts, employment law, Human Resources, property interests and other initiatives.


When Bill Howe purchased H&H Group Holdings, he thought there was plenty of room for success in solar energy, electric, plumbing, energy services and building automation because there was aspect missing in all of these disciplines. It was a combination of being able to solve customer’s problems with thoughtful solutions from dependable people who were highly skilled through their experience and their technological capabilities. After all, what business wouldn’t need that combination of competencies?


It’s not that successful results is an objective; no, it needs to be a requirement of doing business. And that’s what it is at H&H Group Holdings. With clients ranging from Target Stores, Alliant Energy, MG&E, Findorff, 3M and CLS Community Living Solutions to Stevens Construction, Kraemer Brothers, Rockwell, Promega, Hovde Properties and School Districts throughout Wisconsin, H&H Group Holdings is the choice for many solar, electric, plumbing, energy services and building automation projects because of their dependability, knowledge and experience.


    Providing design, engineering, construction, operation and maintenance services, and financing options for roof mount, canopies, trees and ground racking solar projects throughout the U.S.


    All of your commercial and industrial electric needs in one place for health care, education, condos and apartments, and mixed-use developments including estimating, planning, engineering and installation.


    Your company offering expert plumbing services for new construction and remodeling, new and replacement fixtures, emergency services and repairs, annual audits and troubleshooting.


    Providing customized energy solutions in Electrical, HVAC, Building Envelope, Renewables, and Plumbing to all business and organization through development, management, and verification.


    Your resource for custom control solutions, energy management and sales and service of building automation products that increase energy efficiency, enhance comfort, and monitor environments.