CMTA Corporate Headquarters

Louisville, Kentucky

CMTA designed our corporate headquarters to showcase engineering techniques for a sustainable, energy-efficient office building. The building was designed and constructed to LEED Gold standards and received a perfect ENERGY STAR Score of 100. LEED certification, developed by the U.S. Green Building Council, provides a framework for green building design, construction, operations and performance. CMTA managed the entire LEED certification process and carefully documented the cost of targeted credits to demonstrate the benefits of LEED certification and how to accomplish this in the most cost-effective manner. The building is currently operating at Net Zero Energy with an EUI of 15.2 kBtu/sf/yr.

CMTA is built on data. Several of the MEP systems have meters to provide detailed measurements and verification of the building’s performance. Ninety percent of our employees have line-of-sight to the outdoors. This is enhanced by the use of SolaTubes, which bring in additional natural lighting to all spaces. The building’s roof-mounted solar photovoltaic array produces more energy than the building demands annually, making it a Zero Energy building. 

Special features include:

  • Insulated Concrete Form (ICF) walls
  • Geothermal heating and cooling (800 square foot/ton)
  • Daylighting (windows and SolaTubes)
  • Roof mounted solar photovoltaics
  • Airquity Demand Control Ventilation to provide good indoor air quality


CMTA's former president, Ken Seibert was the visionary behind our corporate headquarters achieving Carbon Neutrality in 2012.



The new CMTA Headquarters accomplished all goals set at the beginning of the project and exceeded expectations. The building has met the first priority, consuming minimal energy and operating as planned.

Kenneth L. Seibert, PE, LEED AP

CMTA Past President