273 Summer St

How does 273 Summer St compare with other office buildings in Boston?

The latest disclosures cover 467 office buildings in Boston, out of 6,305 buildings citywide. 273 Summer St's ENERGY STAR score of 68 compares with an average of 71 across the 356 that report a score; it scores higher than 33% of them and lower than 63%. Its site EUI of 41.1 kBtu/ft² is about 33% below the average of 61.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group.

At 176,967 sq ft, it is roughly in line with the average floor area of 191,803 sq ft for those buildings. 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 273 Summer St's energy performance changed over time?

BuildingCensus holds 3 Boston disclosures for 273 Summer St, covering report years 2022–2024. Its ENERGY STAR score went from 69 in 2022 to 68 in 2024 (-1 points); its best year on file was 2023, at 73. Site EUI moved from 40.1 kBtu/ft² (2022) to 41.1 kBtu/ft² (2024), an 2% increase. Reported emissions went from 539 tCO₂e to 412 tCO₂e over the same span (down 24%).

What does an ENERGY STAR score of 68 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 68 means the building performs better than about 68% of its national peers. BuildingCensus bands the score into report-card grades; 68 falls in band C — below median (55–69). It sits 7 points below 75, the threshold for ENERGY STAR certification. In Boston, 52% 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. 273 Summer St's 41.1 kBtu/ft² across 176,967 sq ft works out to about 7.3 billion Btu (2,132 MWh-equivalent) in 2024. The disclosure also reports 1,874,505 kWh of electricity and 8,818 therms of natural gas for the year.

Which law requires 273 Summer St to report its energy use?

273 Summer St reports under BERDO 2.0, the legal basis of Boston's Building Emissions Reduction and Disclosure Ordinance, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record boston:106404:2024). BERDO 2.0 sets emissions standards for buildings of 20,000+ sq ft or 15+ units, starting in 2025 or 2030 depending on building size, with an alternative-compliance payment of $234 per metric ton of CO₂e over the limit.