A practical guide to ENERGY STAR and LEED certification for buildings — what each program measures, how buildings earn certification, the energy and financial benefits, and how smart building technologies contribute to achieving both.
ENERGY STAR certification for commercial buildings is awarded by the US EPA to buildings that score 75 or higher on the ENERGY STAR 1–100 scale. The score represents the building's energy use intensity (EUI — kBtu per square foot per year) benchmarked against similar buildings nationwide, adjusted for climate, occupancy, and operating hours. A score of 75 means the building uses less energy than at least 75% of comparable buildings.
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