PSD is an energy efficiency services and software company. We combine building science with technology to help our customers achieve tangible energy efficiency improvements. Our founder Greg Thomas started PSD in Ithaca, NY in 1992. Since then, we have implemented over 20 energy efficiency programs and provide software to users in almost all 50 states.
Who We Are
”PSD will help you do the most important work of your life.Kathy GreelyCEO
What We Do
We build products and deliver services that support energy efficiency improvements in buildings. For over 25 years, PSD employees have been innovating and evolving the energy efficiency industry. We bring technical experts together with hands-on implementers to create the services that deliver and software that accurately and efficiently measures the outcomes of your programs.
”We understand that through innovation you will achieve better program resultsJoe NunleyVP Program Services
Why We Do It
Adapting to climate change is the challenge of our lifetime. It’s going to take innovation akin to the industrial revolution and space race to meet the challenges that the environment faces. We believe building science technology has a critical role to play in decarbonization.
”It is clear, applied technology will expedite decarbonizationGreg ThomasCSTO
Easily at the top of the list for us are the programs run by PSD. Their commitment to full support of the program stakeholders through their intuitive Compass interface, live support, solicitation of constant feedback, quality training, and education make them a professional pleasure to work with.HERS Rater
We have worked with PSD in the FirstEnergy New Homes program in Pennsylvania for the past couple of years. It is so refreshing to work with an organization that is easy to work with, supportive and quick to respond to any questions we have. PSD’s process of registering and applying for rebates is such an easy process. Thank you for making this so user friendly!Energy Contractor
I love to work with PSD on above code and energy efficiency programs. There software is easy to understand and convenient to use. There technical help is both knowledgeable and timely, I just send them an email and I usually hear back within an hour. They make it easy for me to help my customers maximize their participation in the programs.HERS Rater
I just wanted to thank you for the feedback, and for the quality of the QA report. Because of the many rebate programs in which we operate, we get a lot of QA done by the implementers of utility funded programs. This is by far the most professional QA report I have received from an incentive program.Energy Contractor
Join Our Team
Join our team to change how people and buildings use energy.