133-137 Portland St

How does 133-137 Portland St compare with other office buildings in Boston?

The latest disclosures cover 467 office buildings in Boston, out of 6,305 buildings citywide. 133-137 Portland St's ENERGY STAR score of 59 compares with an average of 71 across the 356 that report a score; it scores higher than 24% of them and lower than 75%. Its site EUI of 81.9 kBtu/ft² is about 33% above the average of 61.7 kBtu/ft² — it uses more energy per square foot than the typical building in that group.

At 30,487 sq ft, it is about 84% below 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 133-137 Portland St's energy performance changed over time?

BuildingCensus holds 3 Boston disclosures for 133-137 Portland St, covering report years 2022–2024. Its ENERGY STAR score went from 89 in 2022 to 59 in 2024 (-30 points); its best year on file was 2023, at 90. Site EUI moved from 26.8 kBtu/ft² (2022) to 81.9 kBtu/ft² (2024), an 206% increase. Reported emissions went from 65 tCO₂e to 136 tCO₂e over the same span (up 111%).

What does an ENERGY STAR score of 59 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 59 means the building performs better than about 59% of its national peers. BuildingCensus bands the score into report-card grades; 59 falls in band C — below median (55–69). It sits 16 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. 133-137 Portland St's 81.9 kBtu/ft² across 30,487 sq ft works out to about 2.5 billion Btu (732 MWh-equivalent) in 2024. The disclosure also reports 244,554 kWh of electricity and 16,634 therms of natural gas for the year.

Which law requires 133-137 Portland St to report its energy use?

133-137 Portland 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:105159:2024). 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.