28 Walker St

How does 28 Walker St compare with other K-12 school buildings in Boston?

The latest disclosures cover 175 K-12 school buildings in Boston, out of 6,305 buildings citywide. 28 Walker St's ENERGY STAR score of 62 compares with an average of 59 across the 163 that report a score; it scores higher than 47% of them and lower than 50%. Its site EUI of 54.0 kBtu/ft² is about 16% below the average of 64.5 kBtu/ft² — it uses less energy per square foot than the typical building in that group.

At 81,655 sq ft, it is roughly in line with the average floor area of 83,066 sq ft for those buildings. Across all 24 jurisdictions BuildingCensus covers, the 6,548 K-12 school buildings average an ENERGY STAR score of 64 and a site EUI of 52.7 kBtu/ft².

How has 28 Walker St's energy performance changed over time?

BuildingCensus holds 3 Boston disclosures for 28 Walker St, covering report years 2022–2024. Its ENERGY STAR score went from 81 in 2022 to 62 in 2024 (-19 points); its best year on file was 2023, at 91. Site EUI moved from 60.0 kBtu/ft² (2022) to 54.0 kBtu/ft² (2024), a 10% decrease. Reported emissions went from 272 tCO₂e to 240 tCO₂e over the same span (down 12%).

What does an ENERGY STAR score of 62 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 62 means the building performs better than about 62% of its national peers. BuildingCensus bands the score into report-card grades; 62 falls in band C — below median (55–69). It sits 13 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. 28 Walker St's 54.0 kBtu/ft² across 81,655 sq ft works out to about 4.4 billion Btu (1,292 MWh-equivalent) in 2024. The disclosure also reports 455,201 kWh of electricity and 28,577 therms of natural gas for the year.

Which law requires 28 Walker St to report its energy use?

28 Walker 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:101883:2024). 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.