# PSD

> PSD, or Performance Systems Development, combines building science, enterprise software, and implementation services for U.S. energy efficiency programs. Its Compass platform manages program workflows, while Clarity supports heat pump and envelope-retrofit analysis; engineers, trainers, and quality-assurance specialists help deliver the work.

- **Founded:** 1998
- **Headquarters:** Ithaca, United States
- **Founders:** Gregory Thomas (Founder; Chief Strategy and Technology Officer)
- **Products:** Compass, Clarity Heat Pump Toolkit, TREAT, Energy program design and implementation, Quality assurance and HERS provider services
- **Notable:** DOE approval announced for Clarity under the HOMES modeled pathway in February 2025., WBENC Women-Owned Business certification announced December 2024., NYSERDA-funded retrospective study examined more than 2,000 retrofitted homes and identified baseline calibration as a major factor in savings prediction accuracy.

## Products & services

- **Compass** — Configurable enterprise software for energy efficiency program portfolios, customer engagement, field data, savings calculations, quality assurance, reporting, and incentive processing. Available directly or through program implementation.
- **Clarity Heat Pump Toolkit** — Combines field data collection, envelope savings analysis, load sizing, equipment selection, and heat pump performance analysis. PSD announced DOE approval for the HOMES modeled pathway in February 2025.
- **TREAT** — Targeted Retrofit Energy Analysis Tool, first launched in 2000. New single-family license sales ended January 2025; new multifamily licenses and support renewals ended June 2026. Existing use depends on license terms.
- **Energy program design and implementation** — Design and operation of residential and commercial utility efficiency programs, including outreach, rebate processing, and contractor support.
- **Quality assurance and HERS provider services** — Field and file reviews, accredited Home Energy Rating provider support, and technical assistance.
- **Energy codes and workforce training** — Energy code compliance support and training for building professionals, officials, contractors, and raters.
- **Standardized Simulations and engineering** — Simplified-input EnergyPlus/OpenStudio simulations, custom calculations, energy assessments, measurement and verification, and building retuning.

## Achievements

- DOE approval announced for Clarity under the HOMES modeled pathway in February 2025.
- WBENC Women-Owned Business certification announced December 2024.
- NYSERDA-funded retrospective study examined more than 2,000 retrofitted homes and identified baseline calibration as a major factor in savings prediction accuracy.
- More than 30 energy efficiency programs supported nationally, according to the October 2026 leadership announcement.

## Latest updates

- **2026-10** — PSD announced Kathy Greely’s retirement effective December 31, 2026. Emelie Cuppernell Glitch is to become CEO and Josh Huber-Honigman president and COO on January 1, 2027.
- **2026-06** — New TREAT multifamily license sales and support renewals ended June 1, following the January 2025 end of new single-family sales.
- **2025-05** — PSD announced a professional network engagement supporting National Grid’s New York energy solutions programs.
- **2025-02** — PSD announced DOE approval for Clarity Heat Pump Toolkit under the HOMES modeled pathway.

## Links

- Website: https://psdconsulting.com/
- LinkedIn: https://www.linkedin.com/company/performance-systems-development/
- Twitter/X: https://twitter.com/WeSpeakBuilding
- YouTube: https://www.youtube.com/@PerformanceSystemsDevelopment

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Profile page: https://yespress.io/psd
Published by YesPress — https://yespress.io
Last updated: 2026-10-24