About PSD

Who We Are

Performance Systems Development (PSD) was founded in Ithaca, New York, in 1998. Since then, it has been at the forefront of the energy efficiency industry, developing and delivering integrated solutions in support of successful energy efficiency programs.

PSD’s Influence on the industry:

  • 2001: PSD and Taitem Engineering release TREAT, an award-winning, Department of Energy (DOE)-approved energy modeling and home energy audit software. PSD was responsible for the software design; Taitem Engineering provided the programming.
    • TREAT’s integration of fuel usage data with modeling data results led to the BPI 2400 energy modeling standard referenced in the IRA. The standard was initiated by PSD.
  • 2002: PSD builds OTTER, a precursor to our enterprise tracking platform Compass, for NHSaves.
    • OTTER was built to automate standardized XML submissions from the TREAT modeling tool into a central database.
    • The XML export from TREAT became the foundation for the PSD-initiated national HPXML data standard. HPXML is a technology-neutral open data standard that streamlines terms and data transfers for residential energy efficiency, home performance, and building characteristics.
  • 2008: PSD becomes a RESNET-accredited HERS Rating Provider, responsible for certifying raters and providing quality assurance. Today, PSD oversees 167 raters in 9 states.
  • 2010: PSD implements its inaugural utility program for FirstEnergy’s Pennsylvania operating companies. This residential new construction program is now in its sixteenth year of consecutive implementation; PSD now supports every new home program in the Keystone state.
  • 2011: PSD begins delivering rater training for the Northeast Home Energy Rating System Alliance, providing classroom and field training to hundreds of raters. PSD is now the exclusive training provider for NEHERS.
  • 2015: PSD begins supporting energy code officials in Pennsylvania with training specifically targeting challenges posed by advancing energy codes. PSD now provides energy codes support to Mass Save, NYSERDA, Delaware, and Pennsylvania. PSD has broadened its code support to include stretch code modeling for the state of Massachusetts, and a residential energy codes field study for the USDOE.
  • 2020: PSD designs the Comfort Home Program working with NYSERDA. Regulatory-approved savings calculations for Comfort Home are provided by a transparent, forms-based approach to simplified energy modeling, Standardized Simulations.
    • Standardized Simulations were incorporated into the New York Technical Resource Manual (TRM) in 2021.
    • 2022: DOE awards PSD a Better Buildings Innovations award for the use of EnergyPlus-based regulatory-approved savings calculations using HPXML.
    • DOE expands support for PSD’s EnergyPlus tool development with three rounds of Small Business Innovation Research funding.
  • PSD has been a contributor to national organizations and standards development for over 20 years, serving on or leading the boards of Affordable Comfort, Efficiency First, the Northeast HERS Alliance, the Energy Efficiency Alliance, ASHRAE, IBPSA-USA, and RESNET.
Leadership Team

”PSD will help you do the most important work of your life.

Kathy GreelyCEO

We bring multifunctional program support capabilities from a staff of seasoned energy efficiency program administrators, engineers, trainers, building scientists, and software developers. We combine building science and technology to create people-friendly solutions that overcome barriers to implementing energy-efficiency and decarbonization efforts. Our staff brings passion and broad experience across multiple disciplines to help clients achieve decarbonization and energy-efficiency goals. PSD implements all aspects of residential and commercial energy efficiency programs for utilities, including QA services. We provide building energy code training services for state energy offices in Delaware, Massachusetts, New York, and Pennsylvania.

PSD Offerings

”We understand that through innovation you will achieve better program results.

Emelie Cuppernell GlitchVP Program Services

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.

Annual Report

”It is clear, applied technology will expedite decarbonization.

Greg ThomasCSTO, Founder

Vision & Values

A world where energy is understandable, actionable, and accessible.

History of PSD

Join Our Team

Join our team to change how people and buildings use energy.

Brendan Thomas PSD
Employee Spotlight

Brendan Thomas – Senior Director of Business Development

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Employee Spotlight

Sunayana Jain – Head of Technical Services

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Employee Spotlight

Robby Oakley – Senior Technical Specialist

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Employee Spotlight

Hilary Grimes-Casey – Building Performance Consulting Manager

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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