At a glance
150 Broadway is a 187,875-square-foot office building in Cambridge, Massachusetts, built in 1999. In its 2024 Cambridge benchmarking disclosure it reported an ENERGY STAR score of 66 out of 100 (grade C), a site energy-use intensity of 79.5 kBtu/ft² and 996 tCO₂e of greenhouse-gas emissions. That score is higher than 39% of the 94 scored office buildings in Cambridge.
BEUDO · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 66 (band C) |
| Site EUI | 79.5 kBtu/ft² |
| Source EUI | 182.4 kBtu/ft² |
| GHG emissions | 996 tCO₂e |
| GHG intensity | — |
| Electricity | 3,113,531 kWh |
| Natural gas | 43,143 therms |
| Water use | 2,937 kgal |
| Gross floor area | 187,875 sq ft |
| Source record | cambridge:B1305:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 66 | +1 | 79.5 kBtu/ft² | 996 tCO₂e |
| 2023 | 65 | +11 | 81.5 kBtu/ft² | 1,017 tCO₂e |
| 2022 | 54 | -2 | 90.9 kBtu/ft² | 1,151 tCO₂e |
| 2021 | 56 | -23 | 86.5 kBtu/ft² | 1,112 tCO₂e |
| 2020 | 79 | +47 | 59.5 kBtu/ft² | 754 tCO₂e |
| 2019 | 32 | +6 | 116.0 kBtu/ft² | 1,386 tCO₂e |
| 2018 | 26 | ±0 | 126.6 kBtu/ft² | 1,600 tCO₂e |
| 2017 | 26 | +13 | 125.8 kBtu/ft² | 1,675 tCO₂e |
| 2016 | 13 | +3 | 151.9 kBtu/ft² | 2,052 tCO₂e |
| 2015 | 10 | 166.0 kBtu/ft² | 2,291 tCO₂e |
Compliance context
BEUDO
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).
Ownership
BOSTON PROPERTIES LIMITED PARTNERSHIP
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Location
- Address
- 150 Broadway
- City
- Cambridge
- State
- Massachusetts
- Coordinates
- 42.36430, -71.08900
Within ~1 km
Nearby benchmarked buildings
- 250 Massachusetts Avenuescore —
Laboratory · 1,362,662 sq ft
- 325 Main Stscore 87
Office · 494,512 sq ft
- 145 Broadwayscore 91
Office · 490,000 sq ft
- 314 Main St.score 80
Office · 482,220 sq ft
- 303 Binney Stscore —
Laboratory · 480,000 sq ft
- 32 VASSAR STscore —
College/University · 464,005 sq ft
See also: most efficient in Cambridge · biggest emitters
How does 150 Broadway compare with other office buildings in Cambridge?
The latest disclosures cover 117 office buildings in Cambridge, out of 902 buildings citywide. 150 Broadway's ENERGY STAR score of 66 compares with an average of 64 across the 94 that report a score; it scores higher than 39% of them and lower than 57%. Its site EUI of 79.5 kBtu/ft² is roughly in line with the average of 78.7 kBtu/ft².
At 187,875 sq ft, it is about 55% above the average floor area of 121,167 sq ft for those buildings. It was built in 1999, 34 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 150 Broadway's energy performance changed over time?
BuildingCensus holds 10 Cambridge disclosures for 150 Broadway, covering report years 2015–2024. Its ENERGY STAR score went from 10 in 2015 to 66 in 2024 (+56 points); its best year on file was 2020, at 79. Site EUI moved from 166.0 kBtu/ft² (2015) to 79.5 kBtu/ft² (2024), a 52% decrease. Reported emissions went from 2,291 tCO₂e to 996 tCO₂e over the same span (down 57%).
What does an ENERGY STAR score of 66 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 66 means the building performs better than about 66% of its national peers. BuildingCensus bands the score into report-card grades; 66 falls in band C — below median (55–69). It sits 9 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. 150 Broadway's 79.5 kBtu/ft² across 187,875 sq ft works out to about 14.9 billion Btu (4,377 MWh-equivalent) in 2024. Its source EUI of 182.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 3,113,531 kWh of electricity, 43,143 therms of natural gas and 2,937 thousand gallons of water for the year.
Which law requires 150 Broadway to report its energy use?
150 Broadway 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:B1305:2024). 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).
More office buildings in Cambridge
- 105 Broadway (10 Cambridge Center)· 185,196 sq ft · score 87 (A)
- 150 2nd ST· 153,336 sq ft · EUI 261.5 kBtu/ft²
- 625 Mount Auburn St· 137,421 sq ft · score 41 (D)
- 141 Portland Street· 135,928 sq ft · score 50 (D)
- 10 Canal Park· 135,710 sq ft · score 66 (C)
- 675 Mass Ave· 127,880 sq ft · score 54 (D)
- Office buildings in Cambridge· 117 benchmarked
- All Cambridge benchmarked buildings· BEUDO
- Most efficient large buildings in Cambridge
- Least efficient large buildings in Cambridge
- Biggest emitters in Cambridge
Frequently asked questions
What is 150 Broadway's energy grade?
150 Broadway scores 66 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2024 Cambridge disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 150 Broadway use?
Its 2024 site energy-use intensity was 79.5 kBtu/ft² (182.4 kBtu/ft² source) across 187,875 sq ft, including 3,113,531 kWh of electricity and 43,143 therms of natural gas.
What are 150 Broadway's carbon emissions?
150 Broadway reported 996 tCO₂e of greenhouse-gas emissions for 2024.
Where is 150 Broadway?
150 Broadway is in Cambridge, Massachusetts. Its coordinates are 42.36430, -71.08900 (latitude, longitude), as published in the Building Energy Use Disclosure Ordinance (BEUDO) file.
How big is 150 Broadway and when was it built?
150 Broadway has 187,875 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1999 as its year built. It is classed as office.
Is 150 Broadway covered by BEUDO?
Yes — it appears in the 2024 Building Energy Use Disclosure Ordinance (BEUDO) disclosure, which lists the buildings reporting under BEUDO.
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About this data
Source: Building Energy Use Disclosure Ordinance (BEUDO) (BEUDO), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “150 Broadway, Cambridge, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/cambridge/150-broadway-e72d305d (data as of October 2, 2026).