Our Story

Over 20 Years of Inspiring Better Buildings

Group14 Engineering is an energy efficiency and sustainability consultant committed to personal, societal, and ecological prosperity. Our mission is to inspire better buildings where people thrive. Group14 brings solutions to projects throughout the United States.

While Group14’s expertise is in the built environment, our passion is the people for whom and with whom we work. We recognize that whenever we sit down at a table we have an opportunity to learn from our colleagues.

Group14 Engineering has been in business since 1992. Sue Reilly and Stephen Carpenter started the firm as Enermodal Engineering, Inc. In 2010, we changed our name to Group14 Engineering, Inc., of which Sue Reilly is the sole proprietor. In case high school chemistry didn’t quite stick, Group14 is the Carbon Group on the periodic table.

Our Milestones

  • Incorporated


    Incorporated in Colorado in 1993, under the name Enermodal Engineering, Inc.
  • Window/Wall Simulation

    Window/Wall Simulation

    1993 – Accredited as a National Fenestration Rating Council Simulation Laboratory, rating the energy performance of windows for major glass manufacturers.
  • ASHRAE Research Award

    ASHRAE Research Award

    Awarded ASHRAE research project to develop software to calculate the influence on energy consumption of inter-reflections between a building and its surroundings.
  • GreenBuild Presentor

    GreenBuild Presentor

    Susan Reilly invited to present at first U.S. Green Building Conference in 1994: Sustainable Design Options for the U.S. Fish & Wildlife Prairie Learning Center.
  • Energy Simulation Experts

    Energy Simulation Experts

    Performed whole building energy simulations for commercial and residential buildings, including work for the National Park Service and Rocky Mountain Institute.
  • Research Grant Winner

    Research Grant Winner

    Awarded U.S. Small Business Innovation Research grant to develop minimized duct design.
  • Builder's Guide Author

    Builder's Guide Author

    Authored the Builder’s Guide to Energy Efficiency Home Construction for the City of Fort Collins
  • Crucial Contracts

    Crucial Contracts

    Consulted on and modeled building energy for key LEED projects, including University of Hawaii John Burns Medical School, Medical Center of the Rockies, and Denver Health Women & Children’s Pavilion.
  • NREL Contract

    NREL Contract

    Awarded first of three, multi-year technical assistance contracts with the National Renewable Energy Laboratory
  • LEED Reviewers

    LEED Reviewers

    Reviewed LEED Energy and Atmosphere Credits submittals (2003-2007).
  • Technical Consultant

    Technical Consultant

    Selected as technical consultant to USGBC Technical Advsiory Group for development of LEED reference guides on Energy and Atmosphere
  • Federal Projects

    Federal Projects

    Assessed federal projects around the U.S. for feasibility of PV, wind and solar thermal technology installations.
  • National Park Service Consulting

    National Park Service Consulting

    Consulted on sustainable design for National Park Service projects in Yellowstone NP; Great Kills Park, NY and Grand Canyon National Park.
  • DMCA Project

    DMCA Project

    Began work on Museum of Contemporary Art | Denver for LEED certification, including energy analysis of double-skin facade.
  • Commissioning and Audit Services

    Commissioning and Audit Services

    Hired Dennis Jones, PE, CEM, CxA in 2006, and started offering building commissioning services and energy audits.
  • ASHRAE Commissioning Committee

    ASHRAE Commissioning Committee

    ASHRAE Standard 202 commissioning standards (voting committee member).
  • Group14 Office Renovation

    Group14 Office Renovation

    Started major renovation of our office and moved in June 2008.
  • Xcel Contract Award

    Xcel Contract Award

    Selected as consultant to Energy Design Assistance Program for Xcel Energy.
  • GHG Services

    GHG Services

    Began performing Greenhouse Gas Analysis.
  • Group14 LEED Platinum Office

    Group14 LEED Platinum Office

    Achieved LEED NC 2009 PLATINUM Certification on our office in time for Earth Day celebration April 2010 — first in the world under new rating system.
  • City of Thorton Sustainability Contract

    City of Thorton Sustainability Contract

    Awarded contract to develop 5-year sustainability plan for the City of Thornton.
  • Group14 Rebranding

    Group14 Rebranding

    We updated our name and brand to Group14 Engineering, Inc. to reflect our current service mix and company culture.


    Group14 and the Denver Housing Authority complete a $46 million “self-managed” Energy Performance Contract. One of the first of its kind, this model has since been successfully replicated by Group14 for seven other public housing authorities across the country.
  • ASHRAE Certification

    ASHRAE Certification

    Susan Reilly invited to assist in development of certification for ASHRAE Building Energy Modeling Professional.
  • Group14 Turns 20!

    Group14 Turns 20!

    Celebrating 20 years in 2012.
  • DOE Protégé of the Year

    DOE Protégé of the Year

    The U.S. Department of Energy, Office of Small and Disadvantaged Business, selected Group14 as the recipient of the 2014 Protégé Award.
  • GBCI LEED Proven Provider

    GBCI LEED Proven Provider

    2015 Green Building Certification Institute Status Acknowledges Group14’s Role as High-Quality LEED Proven Provider
  • Group14 Announces New Principals

    Group14 Announces New Principals

    Group14 is excited to announce our three newest Principles: Laura Charlier, Matt Cooper, and Michael Levinson! These three join Sue Reilly as the company’s four Principles.
  • B Corporation and JUST

    B Corporation and JUST

    Group14 is now a Certified B Corporation and a JUST. participant – meeting rigorous standards of social and environmental performance, accountability, and transparency.
    1325 East 16th Ave
    Denver, CO 80218

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