What We Offer

What We Offer

FLEXLAB can test energy-efficient building systems in any combination


The Department of Energy's FLEXLAB® is the most flexible, comprehensive and advanced building technologies test facility in the world, and is unleashing the full potential of improved energy performance in buildings.

FLEXLAB lets users test energy-efficient building systems individually or as an integrated system, under real-world conditions. FLEXLAB testbeds can monitor and assess heating, ventilation, air conditioning, lighting, windows, building envelope, control systems and plug loads — in any combination.

Users can test alternatives, validate thermal and visual comfort performance, validate design and operating tools, ensuring a building design, tool, or utility program will meet energy saving performance goals before adoption in the market. We've been experts at saving billions of dollars in buildings over the past 50 years, and FLEXLAB is the latest in Berkeley Lab’s long line of game-changing energy efficiency innovations.

Download the FLEXLAB Brochure: PDF - FLEXLAB Brochure