600 Technology Square

How does 600 Technology Square compare with other office buildings in Cambridge?

The latest disclosures cover 117 office buildings in Cambridge, out of 902 buildings citywide. 600 Technology Square's ENERGY STAR score of 8 compares with an average of 64 across the 94 that report a score; it scores higher than 2% of them and lower than 96%. Its site EUI of 112.1 kBtu/ft² is about 42% above the average of 78.7 kBtu/ft² — it uses more energy per square foot than the typical building in that group.

At 127,224 sq ft, it is roughly in line with the average floor area of 121,167 sq ft for those buildings. It was built in 2001, 36 years later than the group's average year built (1965). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².

How has 600 Technology Square's energy performance changed over time?

BuildingCensus holds 10 Cambridge disclosures for 600 Technology Square, covering report years 2015–2024. Its ENERGY STAR score went from 66 in 2015 to 8 in 2024 (-58 points); its best year on file was 2017, at 71. Site EUI moved from 48.8 kBtu/ft² (2015) to 112.1 kBtu/ft² (2024), an 130% increase. Reported emissions went from 483 tCO₂e to 1,022 tCO₂e over the same span (up 111%).

What does an ENERGY STAR score of 8 mean?

ENERGY STAR scores run from 1 to 100 and are computed by the EPA's Portfolio Manager as a percentile against similar buildings nationwide, adjusted for climate, size and use: a score of 8 means the building performs better than about 8% of its national peers. BuildingCensus bands the score into report-card grades; 8 falls in band D — lowest band (1–54). It sits 67 points below 75, the threshold for ENERGY STAR certification. In Cambridge, 50% of scored buildings are at 75 or above.

Site energy-use intensity (EUI) is the energy a building uses on site in a year divided by its floor area, in thousand Btu per square foot — lower is more efficient. 600 Technology Square's 112.1 kBtu/ft² across 127,224 sq ft works out to about 14.3 billion Btu (4,180 MWh-equivalent) in 2024. Its source EUI of 312.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 4,149,739 kWh of electricity and 1,243 thousand gallons of water for the year.

Which law requires 600 Technology Square to report its energy use?

600 Technology Square reports under BEUDO, the legal basis of Cambridge's Building Energy Use Disclosure Ordinance (BEUDO), which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record cambridge:B1377:2024). Cambridge's 2023 BEUDO amendments require non-residential buildings of 100,000+ sq ft to reach net-zero emissions by 2035 (reductions starting 2026) and those of 25,000–100,000 sq ft by 2050 (starting 2030).