Energy Consultants of Wisconsin LLC 

Energy Consultants of Wisconsin LLC (ECW) is a family-run business that provides lighting, solar, and electrical services for the upper Midwest. ECW has been an integral part of the Milwaukee, WI business community since 1989. Over the past 30 years, we have established a great reputation as a trusted brand that values our clients’ needs. To this end, ECW has grown a loyal customer base that trusts us with their lighting, solar, and electrical needs.


While ECW’s primary focus has been on energy-efficient lighting, we have expanded to include additional offerings. Most notably of these is our solar energy work, as we are one of Southeast Wisconsin’s premier authorities in solar panel installations. In like fashion, all ECW Site Formen are certified Master Electricians, capable of handling complex electrical jobs if needs be. Finally, these diverse offerings are available for both residential and commercial customers, with each segment presenting unique opportunities for ECW craftsmanship.


Energy Consultants of Wisconsin LLC was founded in 1989 by Jeff Gruetzmacher of Grafton, WI. Since starting the business, Jeff employed countless friends and family members in the Grafton area. Similarly, his friendly demeanor and unbending work ethic led to a dedicated following of customers for ECW. In 2017, Jeff’s oldest son Kurt over ownership of the business, where he continues a strong legacy of outstanding customer service and top-tier electrical work.


All ECW services are conducted with environmental conservation in mind - including lighting, solar, and electrical work. To this end, ECW’s conservation efforts with energy-efficient lighting and solar installations have been paying dividends in Wisconsin communities for decades.



ECW Commercial Services

Energy Consultants of Wisconsin LLC offers an array of products and services for our commercial clients. We pride ourselves on the notion that “no job is too big or too small” for our business. As a result, ECW has done extensive lighting retrofits and installs for a variety of clients in both private and public capacities. Similarly, our commercial services also extend to solar energy and electrical work. For commercial projects, ECW discusses pricing and scheduling with clients on a case-by-case basis.


ECW commercial clients include, but aren’t limited to:

  • School Districts
  • Villages & Municipalities
  • Retail Stores
  • Factories
  • Warehouses & Storage Units
  • Government Buildings
  • Banks
  • Churches
  • Parking Buildings & Lots


If you are interested in learning more about ECW, or would like to discuss a specific project, please contact us at


ECW Residential Services

Energy Consultants of Wisconsin LLC provides a variety of services for our residential clients. Yet, the scope and breadth of our residential services are dictated by the sort of building in question. For example, ECW lighting services are best suited for multi-family units like apartment buildings and condominiums. Conversely, we have worked extensively on single-family homes concerning both solar installs and large electrical jobs. For residential projects, ECW discusses pricing and scheduling with clients on a case-by-case basis.


ECW residential clients include, but aren’t limited to:

  • Apartment Buildings
  • Condominiums
  • Single Family Homes
  • Hotels
  • High Rises
  • Outdoor & Street Lighting Clients
  • RV Parks


If you are interested in learning more about ECW, or would like to discuss a specific project, please contact us at

ECW & Wisconsin’s Focus on Energy Program

Since the platform’s inception in 2001, ECW has been an essential part of Wisconsin’s Focus on Energy program. The 20-year partnership between ECW and Focus on Energy has saved money for countless WI businesses and homeowners, all the while protecting our valuable natural resources.


On their website, Focus on Energy states that their mission is to “empower the people and businesses of Wisconsin to make smart energy decisions with enduring economic benefits.” ECW shares in this vision, as our products and services are designed to both conserve energy and save money on electricity usage. 


Energy Consultants of Wisconsin LLC is a proud member of the Focus on Energy Trade Ally program. This platform was designed with Wisconsin-based lighting and electrical business to promote energy savings in the State. Therefore, through Focus on Energy initiatives, ECW can further provide our clients with discounted energy-saving products, such as LED lighting. In our 20-year relationship, our organizations have collaborated in retrofitting hundreds of commercial and residential buildings with energy-efficient lighting.


The combined efforts of Focus on Energy and electrical/lighting companies like ECW have led to amazing results in the State of Wisconsin. Here are some interesting facts which are taken from the 2018 Focus on Energy Quadrennial Report:

  • The program saw a $5.16 return for each $1.00 invested during 2018.
  • In 2015-2018, the platform lessened CO2 usage in WI by 28,531,208 tons. This figure is equivalent to taking 3 million cars off the road for 2 years.
  • The energy saved from LED lighting installed in 2018 is enough to supply 17,000 homes for 1 year.
  • Wisconsin businesses and residents invested $4,470,723 in Focus on Energy programs in 2018.


If you would like to hear more about Focus on Energy & ECW, or to see how this program can be beneficial to your business or home, please contact us at

Energy Consultants of Wisconsin LLC Products

Energy Consultants of Wisconsin LLC only supplies and installs the highest quality lighting, solar, and electrical products. In our 30 years doing business, we have established long-standing partnerships with leading product manufacturers in energy-saving technology. Moreover, many of these companies offer warranty programs for their lighting, solar, and electrical products. Finally, if a customer has a technical problem with one of our installs, we are happy to pay a visit and take care of the issue.

ECW Lighting Products:   

  • Satco, Nuvo Lighting, Eiko Lighting, Westinghouse Lighting, Hyperikon Lighting, Venture Lighting, ILP Lighting, Commercial Lighting, Sylvania Lighting

ECW Solar Products:

  • Solarworld Modules, Canadian Solar Modules, Q-Cell Modules, SolarEdge Inverters, Enphase Micro-Inverters

ECW Electrical Products:

  • Werner Electric Supply Products, Hein Electric Supply Products


ECW Partner Companies in Lighting, Solar, & Electrical