The Building Energy Exchange (BE-Ex) accelerates the transition to healthy, comfortable, and energy efficient buildings by serving as a resource and trusted expert to the building industry. >

BE-Ex is the first in a growing network of building decarbonization hubs across the country and around the world. >

Turning Data into Action: Office Buildings

By analyzing publicly available building data, our team identified strategic packages of retrofit measures that provide meaningful emissions savings and viable pathways to Local Law 97 compliance for office buildings at nearly any level of baseline performance.


Decarbonization Roadmap for Multifamily Affordable Housing

This manual provides a decarbonization roadmap for affordable housing in New York City, charting the path to Local Law 97 compliance, reduced energy costs, and improved resident health, safety, and comfort.


LL97 Carbon Calculator

The LL97 Carbon Emissions Calculator estimates a building’s carbon penalty as a result of Local Law 97.

Automatically load building data from NYC’s benchmarking database or manually enter information to generate carbon thresholds, potential penalties, and utility cost metrics across each compliance period.


Heat Pump Planner

Need help determining the heat pump system that might be best for your home? Our Heat Pump Planner tool will help you learn more about heat pump technology, the types available, installation and operation costs, and questions to ask an installer.

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Envelope Showcase

The Envelope Showcase exhibit takes a deep dive into the building envelope, detailing system principles, building strategies, and market-ready technologies that effectively reduce energy use, in the context of New York City’s climate action targets and statewide electrification goals.


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