3181 Porter Drive
Laboratory in California, CA · 3181 Porter Drive, Palo Alto · 94304
At a glance
3181 Porter Drive is a 101,487-square-foot laboratory building at 3181 Porter Drive, Palo Alto in Palo Alto, California, built in 2019. In its 2024 California benchmarking disclosure it reported a site energy-use intensity of 198.4 kBtu/ft² and 1,200 tCO₂e of greenhouse-gas emissions.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 198.4 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 1,200 tCO₂e |
| GHG intensity | 11.8 kgCO₂e/ft² |
| Electricity | 2,877,056 kWh |
| Natural gas | 103,187 therms |
| Gross floor area | 101,487 sq ft |
| Source record | california:16103050:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 198.4 kBtu/ft² | 1,200 tCO₂e | |
| 2023 | — | 138.2 kBtu/ft² | 863 tCO₂e | |
| 2021 | 99 | +1 | 30.6 kBtu/ft² | 179 tCO₂e |
| 2020 | 98 | 30.3 kBtu/ft² | 190 tCO₂e |
Compliance context
AB 802 (Public Resources Code §25402.10)
AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 3181 Porter Drive, Palo Alto
- City
- California
- State
- California
- ZIP
- 94304
- Coordinates
- 37.40828, -122.14866
Within ~1 km
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See also: most efficient in California · biggest emitters
How does 3181 Porter Drive compare with other laboratory buildings in California?
The latest disclosures cover 308 laboratory buildings in California, out of 40,029 buildings citywide. Its site EUI of 198.4 kBtu/ft² is roughly in line with the average of 181.8 kBtu/ft². Its emissions intensity of 11.8 kgCO₂e/ft² is roughly in line with the group average of 11.1 kgCO₂e/ft².
At 101,487 sq ft, it is about 16% below the average floor area of 121,485 sq ft for those buildings. It was built in 2019, 27 years later than the group's average year built (1992). 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 3181 Porter Drive's energy performance changed over time?
BuildingCensus holds 4 California disclosures for 3181 Porter Drive, covering report years 2020, 2021, 2023, 2024. Its ENERGY STAR score went from 98 in 2020 to 99 in 2021 (+1 points). Site EUI moved from 30.3 kBtu/ft² (2020) to 198.4 kBtu/ft² (2024), an 555% increase. Reported emissions went from 190 tCO₂e to 1,200 tCO₂e over the same span (up 530%).
What does a site EUI of 198.4 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. 3181 Porter Drive's 198.4 kBtu/ft² across 101,487 sq ft works out to about 20.1 billion Btu (5,901 MWh-equivalent) in 2024. The disclosure also reports 2,877,056 kWh of electricity and 103,187 therms of natural gas for the year.
Which law requires 3181 Porter Drive to report its energy use?
3181 Porter Drive reports under AB 802 (Public Resources Code §25402.10), the legal basis of California's Building Energy Benchmarking Program (statewide), which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record california:16103050:2024). AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.
More laboratory buildings in California
- Ca956W - Sherman Way Central Lab W· 100,889 sq ft · EUI 620.4 kBtu/ft²
- Eurofins Eaton Analytical Llc· 100,000 sq ft · EUI 71.9 kBtu/ft²
- Building E, 2800 Scott Boulevard, Santa Clara· 99,800 sq ft · EUI 854.6 kBtu/ft²
- Sinsheimer Labs· 99,135 sq ft · EUI 211.0 kBtu/ft²
- 8723 Alden Drive· 98,809 sq ft
- 3170 Porter Drive· 98,626 sq ft · EUI 27.8 kBtu/ft²
- Laboratory buildings in California· 308 benchmarked
- All California benchmarked buildings· AB 802 (Public Resources Code §25402.10)
- Most efficient large buildings in California
- Least efficient large buildings in California
- Biggest emitters in California
Frequently asked questions
What is 3181 Porter Drive's energy grade?
3181 Porter Drive did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 198.4 kBtu/ft².
How much energy does 3181 Porter Drive use?
Its 2024 site energy-use intensity was 198.4 kBtu/ft² across 101,487 sq ft, including 2,877,056 kWh of electricity and 103,187 therms of natural gas.
What are 3181 Porter Drive's carbon emissions?
3181 Porter Drive reported 1,200 tCO₂e of greenhouse-gas emissions (11.8 kgCO₂e/ft²) for 2024.
Where is 3181 Porter Drive?
3181 Porter Drive is at 3181 Porter Drive, Palo Alto, in Palo Alto, California 94304. Its coordinates are 37.40828, -122.14866 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 3181 Porter Drive and when was it built?
3181 Porter Drive has 101,487 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2019 as its year built. It is classed as laboratory.
Is 3181 Porter Drive covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2024 Building Energy Benchmarking Program (statewide) disclosure, which lists the buildings reporting under AB 802 (Public Resources Code §25402.10).
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About this data
Source: Building Energy Benchmarking Program (statewide) (AB 802 (Public Resources Code §25402.10)), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “3181 Porter Drive, Palo Alto, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/3181-porter-drive-bc6fa141 (data as of July 9, 2026).