At The GreyEdge Group (TGEG), we challenge the standards for energy efficiency, effective decarbonization, and thermal comfort at scale. We are leading the heating and cooling transformation towards a more sustainable, reliable, and resilient future.

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Thermal Energy Network Experts

The GreyEdge Group specializes in the engineering, and design of complex thermal energy network systems using the Thermal Highway©. These are also known as an Ambient Temperature Loop (ATL) or Thermal Energy Network (TEN). Successful systems are operating around the world delivering clean and comfortable heating and cooling on projects ranging from single-family homes to large district geothermal systems including university campuses and a 123-story skyscraper.

Our team continues to evolve the breadth and scale of its services in innovative ways. Using the unique Thermal Highway© concept, we offer access to additional thermal energy sources including solar thermal heat, wastewater heat, industrial waste heat, thermal heat storage, and large-scale recycling of thermal energy. Our solutions can scale up to large geographic areas by connecting integrated multi-sources into thermal energy districts. This powerful combination delivers system performance at much higher efficiency, with lower project cost, and lower operating cost than traditional unintegrated geothermal systems.

The GreyEdge Group Team

The members of the GreyEdge Group team have been committed to the ground source heat pump industry for many years. A combined total of over 250 years of experience in almost all facets of the industry around the world from projects ranging from single family homes to large district geothermal systems, give us unparalleled expertise in one of the most energy efficient heating and cooling technologies available.

Our Team

Matthew Garlick
Matthew Garlick CEO View Bio
Richard B. White
Richard B. White Chairman of the Board View Bio
Cary Smith
Cary Smith CFO View Bio
Paul Bony
Paul Bony View Bio
Stephen Hamstra
Stephen Hamstra View Bio
Garen Ewbank
Garen Ewbank View Bio
John McLennan
John McLennan View Bio
Bill O'Donnell
Bill O'Donnell View Bio
Roshan Revankar
Roshan Revankar View Bio
Garry Sexton
Garry Sexton View Bio
Mark Smith
Mark Smith View Bio
Jaiden Marriott
Jaiden Marriott View Bio
Megan Lim
Megan Lim View Bio

Projects

Colorado Mesa University
Colorado Mesa University Grand Junction, CO Learn More
32 ZED
32 ZED Carbondale, CO Learn More
Weber State University
Weber State University Ogden, UT Learn More

The GreyEdge Group partners have worked on hundreds of geothermal projects, including 12 ambient temperature loop projects going back as far as 2002. We have experience with various building types, including university campuses, healthcare facilities, skyscrapers, towns, and more. Feel free to reach out to us and learn about other projects we have worked on.

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