The Building Technologies Office develops, demonstrates, and accelerates the adoption of cost-effective technologies, techniques, tools and services that enable high-performing, energy-efficient and demand-flexible residential and commercial buildings in both the new & existing buildings markets, in support of an equitable transition to a decarbonized energy system by 2050, starting with a decarbonized power sector by 2035. Learn more about BTO.

News, Blogs, and Success Stories

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Strategic Initiatives and Partnerships

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Resource Dashboard

Find technical reports, technology roadmaps, fact sheets, relevant and authorizing statutes, and quick links to BTO’s decision tools.

Project Map

The Building Technologies Office Projects Map is a searchable table and map of BTO’s active projects that have been competitively awarded and funded through DOE’s national labs all across the United States. Dive into any project to learn more about its funding amount, who’s leading the work, the project term, what the project is developing, and its most recent progress.

Map of Solar Projects

Join BTO’s Events

Jun 22
Financing in Higher Education 2:00 PM to 3:00 PM EDT
Jun 29
What’s Hot with Heat Pumps 3:00 PM to 4:00 PM EDT
Jul 01
Jul 20
2021 National Energy Codes Conference 12:00 PM Jul 20 to 4:00 PM Jul 22 EDT

BTO’s Annual Peer Review Conference

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The Peer Review is BTO’s signature event for the building sector’s leading scientists, engineers, policymakers, and other energy enthusiasts to discuss the latest opportunities for improving building performance–and to evaluate the progress of select BTO-funded research, development, demonstration, and deployment projects and programs. The Peer Review is free and open to the public.

Learn more about the next Peer Review event.