100 MAIN ST
College/University in Cambridge, MA
At a glance
100 MAIN ST is a 405,034-square-foot college/university building in Cambridge, Massachusetts, built in 2010. In its 2024 Cambridge benchmarking disclosure it reported a site energy-use intensity of 22.6 kBtu/ft² and 628 tCO₂e of greenhouse-gas emissions.
BEUDO · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 22.6 kBtu/ft² |
| Source EUI | 53.7 kBtu/ft² |
| GHG emissions | 628 tCO₂e |
| GHG intensity | — |
| Electricity | 2,076,023 kWh |
| Natural gas | 4,336 therms |
| Gross floor area | 405,034 sq ft |
| Source record | cambridge:B1479:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 22.6 kBtu/ft² | 628 tCO₂e | |
| 2023 | — | — | 810 tCO₂e | |
| 2022 | — | 36.3 kBtu/ft² | 1,013 tCO₂e | |
| 2021 | — | 39.4 kBtu/ft² | 1,086 tCO₂e | |
| 2020 | — | 47.9 kBtu/ft² | 1,289 tCO₂e | |
| 2019 | — | 54.1 kBtu/ft² | 1,399 tCO₂e | |
| 2018 | — | 48.1 kBtu/ft² | 1,266 tCO₂e | |
| 2017 | — | 48.1 kBtu/ft² | 1,311 tCO₂e | |
| 2016 | — | 50.9 kBtu/ft² | 1,392 tCO₂e | |
| 2015 | — | 56.3 kBtu/ft² | 1,540 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
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
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Location
- Address
- 100 MAIN ST
- City
- Cambridge
- State
- Massachusetts
- Coordinates
- 42.36130, -71.08270
Within ~1 km
Nearby benchmarked buildings
- 100 Cambridge Side Placescore —
Enclosed Mall · 747,697 sq ft
- 50-60 Binney STscore —
Mixed Use Property · 532,739 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
See also: most efficient in Cambridge · biggest emitters
How does 100 MAIN ST compare with other college/university buildings in Cambridge?
The latest disclosures cover 203 college/university buildings in Cambridge, out of 902 buildings citywide. Its site EUI of 22.6 kBtu/ft² is about 85% below the average of 154.3 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 405,034 sq ft, it is about 318% above the average floor area of 96,964 sq ft for those buildings. It was built in 2010, 61 years later than the group's average year built (1949). Across all 24 jurisdictions BuildingCensus covers, the 2,113 college/university buildings average an ENERGY STAR score of 68 and a site EUI of 98.7 kBtu/ft².
How has 100 MAIN ST's energy performance changed over time?
BuildingCensus holds 10 Cambridge disclosures for 100 MAIN ST, covering report years 2015–2024. Site EUI moved from 56.3 kBtu/ft² (2015) to 22.6 kBtu/ft² (2024), a 60% decrease. Reported emissions went from 1,540 tCO₂e to 628 tCO₂e over the same span (down 59%).
What does a site EUI of 22.6 kBtu/ft² mean?
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. 100 MAIN ST's 22.6 kBtu/ft² across 405,034 sq ft works out to about 9.2 billion Btu (2,683 MWh-equivalent) in 2024. Its source EUI of 53.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,076,023 kWh of electricity and 4,336 therms of natural gas for the year.
Which law requires 100 MAIN ST to report its energy use?
100 MAIN ST 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:B1479:2024). 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 college/university buildings in Cambridge
- 500 MAIN ST· 367,689 sq ft · EUI 393.1 kBtu/ft²
- 70 PACIFIC ST· 362,687 sq ft · EUI 67.0 kBtu/ft²
- 1 Oxford St· 355,836 sq ft · EUI 127.1 kBtu/ft²
- 1545 Massachusetts Avenue· 281,097 sq ft · EUI 87.2 kBtu/ft²
- 1586 Massachusetts Avenue· 262,602 sq ft · EUI 120.2 kBtu/ft²
- 31 AMES ST· 260,390 sq ft · EUI 538.6 kBtu/ft²
- College/University buildings in Cambridge· 203 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 100 MAIN ST's energy grade?
100 MAIN ST did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 22.6 kBtu/ft².
How much energy does 100 MAIN ST use?
Its 2024 site energy-use intensity was 22.6 kBtu/ft² (53.7 kBtu/ft² source) across 405,034 sq ft, including 2,076,023 kWh of electricity and 4,336 therms of natural gas.
What are 100 MAIN ST's carbon emissions?
100 MAIN ST reported 628 tCO₂e of greenhouse-gas emissions for 2024.
Where is 100 MAIN ST?
100 MAIN ST is in Cambridge, Massachusetts. Its coordinates are 42.36130, -71.08270 (latitude, longitude), as published in the Building Energy Use Disclosure Ordinance (BEUDO) file.
How big is 100 MAIN ST and when was it built?
100 MAIN ST has 405,034 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2010 as its year built. It is classed as college/university.
Is 100 MAIN ST 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, “100 MAIN ST, Cambridge, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/cambridge/100-main-st-72fde9c8 (data as of October 2, 2026).