Library_Central (Old Downtown Library)
Library in California, CA · 820 E St, San Diego · 92101
At a glance
Library_Central (Old Downtown Library) is a 144,524-square-foot library at 820 E St, San Diego in San Diego, California, built in 1953. In its 2022 California benchmarking disclosure it reported a site energy-use intensity of 1.2 kBtu/ft² and 12 tCO₂e of greenhouse-gas emissions.
AB 802 (Public Resources Code §25402.10) · reporting year 2022
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 1.2 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 12 tCO₂e |
| GHG intensity | 0.1 kgCO₂e/ft² |
| Electricity | 52,216 kWh |
| Natural gas | 0 therms |
| Gross floor area | 144,524 sq ft |
| Source record | california:8803214:2022 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2022latest | — | 1.2 kBtu/ft² | 12 tCO₂e | |
| 2021 | — | 3.1 kBtu/ft² | 27 tCO₂e | |
| 2020 | — | 5.6 kBtu/ft² | 49 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
- 820 E St, San Diego
- City
- California
- State
- California
- ZIP
- 92101
- Coordinates
- 32.71501, -117.15697
Within ~1 km
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See also: most efficient in California · biggest emitters
How does Library_Central (Old Downtown Library) compare with other library buildings in California?
The latest disclosures cover 49 library buildings in California, out of 40,029 buildings citywide. Its site EUI of 1.2 kBtu/ft² is about 98% below the average of 56.1 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.1 kgCO₂e/ft² is about 97% below the group average of 3.5 kgCO₂e/ft².
At 144,524 sq ft, it is about 14% above the average floor area of 126,866 sq ft for those buildings. It was built in 1953, 24 years earlier than the group's average year built (1977).
How has Library_Central (Old Downtown Library)'s energy performance changed over time?
BuildingCensus holds 3 California disclosures for Library_Central (Old Downtown Library), covering report years 2020–2022. Site EUI moved from 5.6 kBtu/ft² (2020) to 1.2 kBtu/ft² (2022), a 79% decrease. Reported emissions went from 49 tCO₂e to 12 tCO₂e over the same span (down 75%).
What does a site EUI of 1.2 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. Library_Central (Old Downtown Library)'s 1.2 kBtu/ft² across 144,524 sq ft works out to about 0.2 billion Btu (51 MWh-equivalent) in 2022. The disclosure also reports 52,216 kWh of electricity and 0 therms of natural gas for the year.
Which law requires Library_Central (Old Downtown Library) to report its energy use?
Library_Central (Old Downtown Library) 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 2022 disclosure (source record california:8803214:2022). 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 library buildings in California
- Beale Memorial Library & Hq· 128,165 sq ft · EUI 43.6 kBtu/ft²
- 038 Library And Courts Ii Annex Building· 115,000 sq ft · EUI 60.4 kBtu/ft²
- E.D. Stone - Lane Building· 112,532 sq ft · EUI 108.7 kBtu/ft²
- Main Library, 2090 Kittredge Street, Berkeley· 108,200 sq ft · EUI 50.2 kBtu/ft²
- Thomas & Dorothy Leavey Library (Lvl)· 104,985 sq ft · EUI 76.1 kBtu/ft²
- Fremont Main Library· 102,757 sq ft · EUI 52.7 kBtu/ft²
- Library buildings in California· 49 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 Library_Central (Old Downtown Library)'s energy grade?
Library_Central (Old Downtown Library) did not report an ENERGY STAR score in its 2022 disclosure, but its site energy-use intensity was 1.2 kBtu/ft².
How much energy does Library_Central (Old Downtown Library) use?
Its 2022 site energy-use intensity was 1.2 kBtu/ft² across 144,524 sq ft, including 52,216 kWh of electricity and 0 therms of natural gas.
What are Library_Central (Old Downtown Library)'s carbon emissions?
Library_Central (Old Downtown Library) reported 12 tCO₂e of greenhouse-gas emissions (0.1 kgCO₂e/ft²) for 2022.
Where is Library_Central (Old Downtown Library)?
Library_Central (Old Downtown Library) is at 820 E St, San Diego, in San Diego, California 92101. Its coordinates are 32.71501, -117.15697 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Library_Central (Old Downtown Library) and when was it built?
Library_Central (Old Downtown Library) has 144,524 sq ft of gross floor area, as reported in its 2022 disclosure. The disclosure lists 1953 as its year built. It is classed as library.
Is Library_Central (Old Downtown Library) covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2022 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, “Library_Central (Old Downtown Library), San Diego, California — 2022 benchmarking disclosure”, https://buildingcensus.com/buildings/california/library-central-old-downtown-library-19697b87 (data as of July 9, 2026).