Energy Services


Building energy codes are regulatory instruments that specify minimum energy efficiency standards for the residential and commercial building sectors. Building energy codes commonly mandate certain energy efficiency characteristics for building technologies.

The GC3 team will help build your business case and roadmap wherever you are on your sustainability journey. We can optimize your building performance with technology that delivers substantial energy savings, we balance cost savings and investment to achieve sustainability targets.

Our flexible models are designed to do exactly what they say, share the risk. Sustainability models include:

  • 45L Tax Credit – Certificate Only
  • IECC Energy Modeling
  • IECC Duct Leakage Test
  • IECC Adequate Airflow
  • IECC Air Infiltration Test
  • IECC Thermal Envelope
  • Dominion Energy – Thermwise
  • Rocky Mountain Power – Wattsmart

45L Tax Credit Certification


Our Process

Plan Review: GC3’s Sustainability Specialists review your projects for eligibility for the 45L Tax Credit.

Modeling: Our design team conducts a comprehensive evaluation of all building units eligible for 45L certification.

Certification: Our team will certify all eligible units for 45L Tax Credits.

Your Benefit

$2,000 Tax Rebate Per Qualified Unit: Each unit/address GC3 reviews and models will be eligible for up to a $2,000 tax rebate (retroactive to 3 years).

Home Energy Certification: Our Sustainability Specialist will review and verify your projects for HERS certification on a per unit basis, enhancing future plan designs to ensure tax qualified builds.

Qualifying Projects

  • Single Family Units
  • Multi-Family Units & Apartments
  • Additional Dwelling Units (ADUs)
  • Assisted Living Facilities
  • Student Housing
  • Reconstruction
  • Rehabilitation

What questions do you have?
Give us a call!

(801) 364-0880


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