250 Monsignor O'Brien Hwy

How does 250 Monsignor O'Brien Hwy compare with other hotel buildings in Cambridge?

The latest disclosures cover 19 hotel buildings in Cambridge, out of 902 buildings citywide. 250 Monsignor O'Brien Hwy's ENERGY STAR score of 41 compares with an average of 55 across the 18 that report a score; it scores higher than 44% of them and lower than 50%. Its site EUI of 181.0 kBtu/ft² is about 83% above the average of 98.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group.

At 22,615 sq ft, it is about 85% below the average floor area of 146,134 sq ft for those buildings. It was built in 1998, 9 years later than the group's average year built (1990). Across all 24 jurisdictions BuildingCensus covers, the 3,812 hotel buildings average an ENERGY STAR score of 65 and a site EUI of 77.8 kBtu/ft².

How has 250 Monsignor O'Brien Hwy's energy performance changed over time?

BuildingCensus holds 10 Cambridge disclosures for 250 Monsignor O'Brien Hwy, covering report years 2015–2024. Its ENERGY STAR score went from 14 in 2015 to 41 in 2024 (+27 points); its best year on file was 2020, at 54. Site EUI moved from 236.0 kBtu/ft² (2015) to 181.0 kBtu/ft² (2024), a 23% decrease. Reported emissions went from 345 tCO₂e to 255 tCO₂e over the same span (down 26%).

What does an ENERGY STAR score of 41 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 41 means the building performs better than about 41% of its national peers. BuildingCensus bands the score into report-card grades; 41 falls in band D — lowest band (1–54). It sits 34 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. 250 Monsignor O'Brien Hwy's 181.0 kBtu/ft² across 22,615 sq ft works out to about 4.1 billion Btu (1,200 MWh-equivalent) in 2024. Its source EUI of 343.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 582,354 kWh of electricity, 21,056 therms of natural gas and 2,899 thousand gallons of water for the year.

Which law requires 250 Monsignor O'Brien Hwy to report its energy use?

250 Monsignor O'Brien Hwy 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:B1311:2024). 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).