A Building Emissions Reduction Unit is a carbon credit representing one tonne of CO2e reduced through a certified building retrofit — issued, tracked, and retired on the Ontoly Registry.
Every BERU is quantified from measured utility data, not models or estimates, and traces to a specific building and retrofit — no mega-project aggregation.
Building owners, managers, retrofit engineering firms, and consultants with eligible retrofit projects under the BERS Program. Check eligibility on the program page.
Voluntary offsetting, green building certification offsets (LEED v5, Zero Carbon Standard), and — subject to jurisdictional approval — compliance under emerging Building Performance Standards.
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