Performance Systems Development (PSD) is a leading energy efficiency company based in Ithaca, NY. With a team of experts in building science, PSD is dedicated to reducing energy consumption in buildings through innovative programs and services. Led by CEO Kathy Greely, who has extensive experience in the energy efficiency sector, PSD offers cutting-edge solutions for residential and commercial properties, including energy modeling, retrofits, and custom energy codes programs.
Founder and Chief Strategy and Technology Officer, Greg Thomas, brings over 37 years of experience in building performance to PSD. He has been instrumental in the development and implementation of energy efficiency programs and has served as an advisor to national and state entities. With a team of professionals, including HERS Rater Emelie Cuppernell Glitch, PSD is committed to helping buildings use less energy and making a positive impact on the environment.
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