4700 Old Ironsides Dr
Data Center in California, CA · 4700 Old Ironsides Dr., Santa Clara · 95054
At a glance
4700 Old Ironsides Dr is a 90,139-square-foot data center at 4700 Old Ironsides Dr., Santa Clara in Santa Clara, California, built in 1977. In its 2020 California benchmarking disclosure it reported a site energy-use intensity of 2197.7 kBtu/ft² and 13,140 tCO₂e of greenhouse-gas emissions.
AB 802 (Public Resources Code §25402.10) · reporting year 2020
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 2197.7 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 13,140 tCO₂e |
| GHG intensity | 145.8 kgCO₂e/ft² |
| Electricity | 57,760,943 kWh |
| Gross floor area | 90,139 sq ft |
| Source record | california:5716733:2020 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2020latest | — | 2197.7 kBtu/ft² | 13,140 tCO₂e | |
| 2019 | — | 2057.2 kBtu/ft² | 13,065 tCO₂e | |
| 2018 | — | 1433.8 kBtu/ft² | 9,107 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
- 4700 Old Ironsides Dr., Santa Clara
- City
- California
- State
- California
- ZIP
- 95054
- Coordinates
- 37.39882, -121.98085
Within ~1 km
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See also: most efficient in California · biggest emitters
How does 4700 Old Ironsides Dr compare with other data center buildings in California?
The latest disclosures cover 112 data center buildings in California, out of 40,029 buildings citywide. Its site EUI of 2197.7 kBtu/ft² is about 164% above the average of 832.6 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 145.8 kgCO₂e/ft² is about 166% above the group average of 54.8 kgCO₂e/ft².
At 90,139 sq ft, it is about 39% below the average floor area of 147,240 sq ft for those buildings. It was built in 1977, 14 years earlier than the group's average year built (1991). Across all 24 jurisdictions BuildingCensus covers, the 267 data center buildings average an ENERGY STAR score of 68 and a site EUI of 504.4 kBtu/ft².
How has 4700 Old Ironsides Dr's energy performance changed over time?
BuildingCensus holds 3 California disclosures for 4700 Old Ironsides Dr, covering report years 2018–2020. Only 3 of those years carry energy figures.
What does a site EUI of 2197.7 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. 4700 Old Ironsides Dr's 2197.7 kBtu/ft² across 90,139 sq ft works out to about 198.1 billion Btu (58,057 MWh-equivalent) in 2020. The disclosure also reports 57,760,943 kWh of electricity for the year.
Which law requires 4700 Old Ironsides Dr to report its energy use?
4700 Old Ironsides Dr 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 2020 disclosure (source record california:5716733:2020). 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 data center buildings in California
- Ca 14452 Franklin Ave Tustin - Ca0191· 87,000 sq ft · EUI 578.6 kBtu/ft²
- Silicon Valley 1· 84,000 sq ft · score 94 (A)
- Lax2-A Cyxtera· 82,911 sq ft · score 81 (B)
- 3015 Winona Avenue (Bur10)· 82,911 sq ft · EUI 614.1 kBtu/ft²
- Coresite Sv2· 80,060 sq ft · score 99 (A)
- Rancho Cordova - Mck Data Center· 79,000 sq ft · EUI 684.5 kBtu/ft²
- Data Center buildings in California· 112 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 4700 Old Ironsides Dr's energy grade?
4700 Old Ironsides Dr did not report an ENERGY STAR score in its 2020 disclosure, but its site energy-use intensity was 2197.7 kBtu/ft².
How much energy does 4700 Old Ironsides Dr use?
Its 2020 site energy-use intensity was 2197.7 kBtu/ft² across 90,139 sq ft, including 57,760,943 kWh of electricity.
What are 4700 Old Ironsides Dr's carbon emissions?
4700 Old Ironsides Dr reported 13,140 tCO₂e of greenhouse-gas emissions (145.8 kgCO₂e/ft²) for 2020.
Where is 4700 Old Ironsides Dr?
4700 Old Ironsides Dr is at 4700 Old Ironsides Dr., Santa Clara, in Santa Clara, California 95054. Its coordinates are 37.39882, -121.98085 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 4700 Old Ironsides Dr and when was it built?
4700 Old Ironsides Dr has 90,139 sq ft of gross floor area, as reported in its 2020 disclosure. The disclosure lists 1977 as its year built. It is classed as data center.
Is 4700 Old Ironsides Dr covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2020 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, “4700 Old Ironsides Dr, Santa Clara, California — 2020 benchmarking disclosure”, https://buildingcensus.com/buildings/california/4700-old-ironsides-dr-8c1af011 (data as of July 9, 2026).