Z431616 - Sunnyvale Bldg. J-680
Office in California, CA · 680 West California Avenue, Sunnyvale · 94086
At a glance
Z431616 - Sunnyvale Bldg. J-680 is a 69,000-square-foot office building at 680 West California Avenue, Sunnyvale in Sunnyvale, California, built in 1999. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 82 out of 100 (grade B), a site energy-use intensity of 76.6 kBtu/ft² and 320 tCO₂e of greenhouse-gas emissions. That score is higher than 46% 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 | 82 (band B) |
| Site EUI | 76.6 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 320 tCO₂e |
| GHG intensity | 4.6 kgCO₂e/ft² |
| Electricity | 920,203 kWh |
| Natural gas | 21,086 therms |
| Gross floor area | 69,000 sq ft |
| Source record | california:2014980:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 82 | -2 | 76.6 kBtu/ft² | 320 tCO₂e |
| 2023 | 84 | +13 | 83.0 kBtu/ft² | 366 tCO₂e |
| 2022 | 71 | +3 | — | 348 tCO₂e |
| 2021 | 68 | -7 | 80.2 kBtu/ft² | 318 tCO₂e |
| 2020 | 75 | -6 | 74.5 kBtu/ft² | 319 tCO₂e |
| 2018 | 81 | 89.6 kBtu/ft² | 390 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
- 680 West California Avenue, Sunnyvale
- City
- California
- State
- California
- ZIP
- 94086
- Coordinates
- 37.38102, -122.03589
Within ~1 km
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See also: most efficient in California · biggest emitters
How does Z431616 - Sunnyvale Bldg. J-680 compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. Z431616 - Sunnyvale Bldg. J-680's ENERGY STAR score of 82 compares with an average of 75 across the 4,912 that report a score; it scores higher than 46% of them and lower than 52%. Its site EUI of 76.6 kBtu/ft² is about 36% above the average of 56.4 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 4.6 kgCO₂e/ft² is about 29% above the group average of 3.6 kgCO₂e/ft².
At 69,000 sq ft, it is about half of the average floor area of 151,937 sq ft for those buildings. It was built in 1999, 14 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.
How has Z431616 - Sunnyvale Bldg. J-680's energy performance changed over time?
BuildingCensus holds 6 California disclosures for Z431616 - Sunnyvale Bldg. J-680, covering report years 2018, 2020, 2021, 2022, 2023, 2024. Its ENERGY STAR score went from 81 in 2018 to 82 in 2024 (+1 points); its best year on file was 2023, at 84. Site EUI moved from 89.6 kBtu/ft² (2018) to 76.6 kBtu/ft² (2024), a 15% decrease. Reported emissions went from 390 tCO₂e to 320 tCO₂e over the same span (down 18%).
What does an ENERGY STAR score of 82 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 82 means the building performs better than about 82% of its national peers. BuildingCensus bands the score into report-card grades; 82 falls in band B — above median (70–84). 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. Z431616 - Sunnyvale Bldg. J-680's 76.6 kBtu/ft² across 69,000 sq ft works out to about 5.3 billion Btu (1,549 MWh-equivalent) in 2024. The disclosure also reports 920,203 kWh of electricity and 21,086 therms of natural gas for the year.
Which law requires Z431616 - Sunnyvale Bldg. J-680 to report its energy use?
Z431616 - Sunnyvale Bldg. J-680 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:2014980:2024). 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.
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- 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 Z431616 - Sunnyvale Bldg. J-680's energy grade?
Z431616 - Sunnyvale Bldg. J-680 scores 82 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Z431616 - Sunnyvale Bldg. J-680 use?
Its 2024 site energy-use intensity was 76.6 kBtu/ft² across 69,000 sq ft, including 920,203 kWh of electricity and 21,086 therms of natural gas.
What are Z431616 - Sunnyvale Bldg. J-680's carbon emissions?
Z431616 - Sunnyvale Bldg. J-680 reported 320 tCO₂e of greenhouse-gas emissions (4.6 kgCO₂e/ft²) for 2024.
Where is Z431616 - Sunnyvale Bldg. J-680?
Z431616 - Sunnyvale Bldg. J-680 is at 680 West California Avenue, Sunnyvale, in Sunnyvale, California 94086. Its coordinates are 37.38102, -122.03589 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Z431616 - Sunnyvale Bldg. J-680 and when was it built?
Z431616 - Sunnyvale Bldg. J-680 has 69,000 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 Z431616 - Sunnyvale Bldg. J-680 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, “Z431616 - Sunnyvale Bldg. J-680, Sunnyvale, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/z431616-sunnyvale-bldg-j-680-2cfa072b (data as of July 9, 2026).