45 Sidney Street
Laboratory in Cambridge, MA
At a glance
45 Sidney Street is a 277,000-square-foot laboratory building in Cambridge, Massachusetts, built in 1998. In its 2024 Cambridge benchmarking disclosure it reported a site energy-use intensity of 308.0 kBtu/ft² and 5,216 tCO₂e of greenhouse-gas emissions.
BEUDO · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 308.0 kBtu/ft² |
| Source EUI | 550.1 kBtu/ft² |
| GHG emissions | 5,216 tCO₂e |
| GHG intensity | — |
| Electricity | 10,516,680 kWh |
| Natural gas | 494,272 therms |
| Water use | 7,868 kgal |
| Gross floor area | 277,000 sq ft |
| Source record | cambridge:B1762:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 308.0 kBtu/ft² | 5,216 tCO₂e | |
| 2023 | — | 257.6 kBtu/ft² | 4,446 tCO₂e | |
| 2022 | — | 285.2 kBtu/ft² | 4,853 tCO₂e | |
| 2021 | — | 283.6 kBtu/ft² | 4,834 tCO₂e | |
| 2020 | — | 268.2 kBtu/ft² | 4,548 tCO₂e | |
| 2019 | — | 266.6 kBtu/ft² | 4,339 tCO₂e | |
| 2018 | — | 293.0 kBtu/ft² | 4,914 tCO₂e | |
| 2017 | — | 279.9 kBtu/ft² | 4,860 tCO₂e | |
| 2016 | — | 310.4 kBtu/ft² | 5,536 tCO₂e | |
| 2015 | — | 355.6 kBtu/ft² | 6,457 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
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 45 Sidney Street
- City
- Cambridge
- State
- Massachusetts
- Coordinates
- 42.36180, -71.10210
Within ~1 km
Nearby benchmarked buildings
- 250 Massachusetts Avenuescore —
Laboratory · 1,362,662 sq ft
- 250 Massachusetts Avenuescore —
Laboratory · 517,029 sq ft
- 70 PACIFIC STscore —
College/University · 362,687 sq ft
- 575 Memorial Drivescore 37
Hotel · 347,000 sq ft
- 610 Main Streetscore —
Laboratory · 278,738 sq ft
- 131 Washington Streetscore 68
Multifamily Housing · 275,666 sq ft
See also: most efficient in Cambridge · biggest emitters
How does 45 Sidney Street compare with other laboratory buildings in Cambridge?
The latest disclosures cover 88 laboratory buildings in Cambridge, out of 902 buildings citywide. Its site EUI of 308.0 kBtu/ft² is about 13% above the average of 272.6 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 277,000 sq ft, it is about 53% above the average floor area of 181,468 sq ft for those buildings. It was built in 1998, 14 years later than the group's average year built (1984). Across all 24 jurisdictions BuildingCensus covers, the 795 laboratory buildings average an ENERGY STAR score of 29 and a site EUI of 231.7 kBtu/ft².
How has 45 Sidney Street's energy performance changed over time?
BuildingCensus holds 10 Cambridge disclosures for 45 Sidney Street, covering report years 2015–2024. Site EUI moved from 355.6 kBtu/ft² (2015) to 308.0 kBtu/ft² (2024), a 13% decrease. Reported emissions went from 6,457 tCO₂e to 5,216 tCO₂e over the same span (down 19%).
What does a site EUI of 308.0 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. 45 Sidney Street's 308.0 kBtu/ft² across 277,000 sq ft works out to about 85.3 billion Btu (25,004 MWh-equivalent) in 2024. Its source EUI of 550.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 10,516,680 kWh of electricity, 494,272 therms of natural gas and 7,868 thousand gallons of water for the year.
Which law requires 45 Sidney Street to report its energy use?
45 Sidney Street 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:B1762:2024). 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 laboratory buildings in Cambridge
- 300 Massachusetts Ave· 274,456 sq ft · EUI 106.6 kBtu/ft²
- 350 Water St· 273,077 sq ft · EUI 309.6 kBtu/ft²
- 12 Oxford St· 261,875 sq ft · EUI 312.7 kBtu/ft²
- 9 Cambridge Center· 253,819 sq ft · EUI 304.8 kBtu/ft²
- 150 Cambridge Park Drive· 247,548 sq ft · EUI 194.5 kBtu/ft²
- 15 Cambridge Center· 245,405 sq ft · EUI 433.2 kBtu/ft²
- Laboratory buildings in Cambridge· 88 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 45 Sidney Street's energy grade?
45 Sidney Street did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 308.0 kBtu/ft².
How much energy does 45 Sidney Street use?
Its 2024 site energy-use intensity was 308.0 kBtu/ft² (550.1 kBtu/ft² source) across 277,000 sq ft, including 10,516,680 kWh of electricity and 494,272 therms of natural gas.
What are 45 Sidney Street's carbon emissions?
45 Sidney Street reported 5,216 tCO₂e of greenhouse-gas emissions for 2024.
Where is 45 Sidney Street?
45 Sidney Street is in Cambridge, Massachusetts. Its coordinates are 42.36180, -71.10210 (latitude, longitude), as published in the Building Energy Use Disclosure Ordinance (BEUDO) file.
How big is 45 Sidney Street and when was it built?
45 Sidney Street has 277,000 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1998 as its year built. It is classed as laboratory.
Is 45 Sidney Street covered by BEUDO?
Yes — it appears in the 2024 Building Energy Use Disclosure Ordinance (BEUDO) disclosure, which lists the buildings reporting under BEUDO.
Working with Cambridge building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “45 Sidney Street, Cambridge, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/cambridge/45-sidney-street-e17aceea (data as of October 2, 2026).