920 Stewart Drive
Office in California, CA · 920 Stewart Drive, Sunnyvale · 94085
At a glance
920 Stewart Drive is a 66,535-square-foot office building at 920 Stewart Drive, Sunnyvale in Sunnyvale, California, built in 2000. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 92 out of 100 (grade A), a site energy-use intensity of 19.4 kBtu/ft² and 82 tCO₂e of greenhouse-gas emissions. That score is higher than 69% of the 4,912 scored office buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 92 (band A) |
| Site EUI | 19.4 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 82 tCO₂e |
| GHG intensity | 1.2 kgCO₂e/ft² |
| Electricity | 289,330 kWh |
| Natural gas | 3,065 therms |
| Gross floor area | 66,535 sq ft |
| Source record | california:45907094:2024 |
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
- 920 Stewart Drive, Sunnyvale
- City
- California
- State
- California
- ZIP
- 94085
- Coordinates
- 37.38318, -122.00547
Within ~1 km
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See also: most efficient in California · biggest emitters
How does 920 Stewart Drive compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. 920 Stewart Drive's ENERGY STAR score of 92 compares with an average of 75 across the 4,912 that report a score; it scores higher than 69% of them and lower than 28%. Its site EUI of 19.4 kBtu/ft² is about 66% below the average of 56.4 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 1.2 kgCO₂e/ft² is about 66% below the group average of 3.6 kgCO₂e/ft².
At 66,535 sq ft, it is about 56% below the average floor area of 151,937 sq ft for those buildings. It was built in 2000, 15 years later than the group's average year built (1985). 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.
What does an ENERGY STAR score of 92 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 92 means the building performs better than about 92% of its national peers. BuildingCensus bands the score into report-card grades; 92 falls in band A — high performer (85–100). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. In California, 65% 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. 920 Stewart Drive's 19.4 kBtu/ft² across 66,535 sq ft works out to about 1.3 billion Btu (378 MWh-equivalent) in 2024. The disclosure also reports 289,330 kWh of electricity and 3,065 therms of natural gas for the year.
Which law requires 920 Stewart Drive to report its energy use?
920 Stewart 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:45907094:2024). 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 office buildings in California
- B-0· 66,521 sq ft · score 97 (A)
- 9300 Santa Fe Springs Rd· 66,516 sq ft · score 33 (D)
- 30851 Agoura Road· 66,500 sq ft · EUI 57.7 kBtu/ft²
- 4830 Ruffin Road· 66,495 sq ft · EUI 100.7 kBtu/ft²
- 350 Frank H Ogawa Plaza· 66,490 sq ft · score 96 (A)
- 4055 Wilshire, Llc· 66,466 sq ft · score 94 (A)
- Office buildings in California· 6,214 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 920 Stewart Drive's energy grade?
920 Stewart Drive scores 92 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 920 Stewart Drive use?
Its 2024 site energy-use intensity was 19.4 kBtu/ft² across 66,535 sq ft, including 289,330 kWh of electricity and 3,065 therms of natural gas.
What are 920 Stewart Drive's carbon emissions?
920 Stewart Drive reported 82 tCO₂e of greenhouse-gas emissions (1.2 kgCO₂e/ft²) for 2024.
Where is 920 Stewart Drive?
920 Stewart Drive is at 920 Stewart Drive, Sunnyvale, in Sunnyvale, California 94085. Its coordinates are 37.38318, -122.00547 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 920 Stewart Drive and when was it built?
920 Stewart Drive has 66,535 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2000 as its year built. It is classed as office.
Is 920 Stewart 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, “920 Stewart Drive, Sunnyvale, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/920-stewart-drive-500cba1f (data as of July 9, 2026).