Kaiser Permanente Zion Medical Center
Hospital (General Medical & Surgical) in San Diego, CA · 4647 Zion Ave.
At a glance
Kaiser Permanente Zion Medical Center is a 651,043-square-foot hospital (general medical & surgical) at 4647 Zion Ave. in San Diego, California, built in 1973. In its 2022 San Diego benchmarking disclosure it reported an ENERGY STAR score of 61 out of 100 (grade C) and a site energy-use intensity of 230.3 kBtu/ft². That score is higher than 13% of the 8 scored hospital (general medical & surgical) buildings in San Diego.
Building Energy Benchmarking Ordinance (SDMC Ch. 14 Art. 12) · reporting year 2022
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 61 (band C) |
| Site EUI | 230.3 kBtu/ft² |
| Source EUI | — |
| GHG emissions | — |
| GHG intensity | — |
| Gross floor area | 651,043 sq ft |
| Source record | san_diego:101407:2022 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2022latest | 61 | -10 | 230.3 kBtu/ft² | — |
| 2021 | 71 | 214.2 kBtu/ft² | — |
Compliance context
Building Energy Benchmarking Ordinance (SDMC Ch. 14 Art. 12)
San Diego's ordinance requires annual benchmarking for commercial buildings over 50,000 sq ft, with civil penalties for buildings that fail to report.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 4647 Zion Ave.
- City
- San Diego
- State
- California
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in San Diego · biggest emitters
How does Kaiser Permanente Zion Medical Center compare with other hospital (general medical & surgical) buildings in San Diego?
The latest disclosures cover 13 hospital (general medical & surgical) buildings in San Diego, out of 2,567 buildings citywide. Kaiser Permanente Zion Medical Center's ENERGY STAR score of 61 compares with an average of 78 across the 8 that report a score; it scores higher than 13% of them and lower than 75%. Its site EUI of 230.3 kBtu/ft² is roughly in line with the average of 227.0 kBtu/ft².
At 651,043 sq ft, it is about 46% above the average floor area of 444,932 sq ft for those buildings. It was built in 1973, 7 years earlier than the group's average year built (1980). Across all 24 jurisdictions BuildingCensus covers, the 748 hospital (general medical & surgical) buildings average an ENERGY STAR score of 59 and a site EUI of 238.7 kBtu/ft².
How has Kaiser Permanente Zion Medical Center's energy performance changed over time?
BuildingCensus holds 2 San Diego disclosures for Kaiser Permanente Zion Medical Center, covering report years 2021–2022. Its ENERGY STAR score went from 71 in 2021 to 61 in 2022 (-10 points); its best year on file was 2021, at 71. Site EUI moved from 214.2 kBtu/ft² (2021) to 230.3 kBtu/ft² (2022), an 8% increase.
What does an ENERGY STAR score of 61 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 61 means the building performs better than about 61% of its national peers. BuildingCensus bands the score into report-card grades; 61 falls in band C — below median (55–69). It sits 14 points below 75, the threshold for ENERGY STAR certification. In San Diego, 73% 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. Kaiser Permanente Zion Medical Center's 230.3 kBtu/ft² across 651,043 sq ft works out to about 149.9 billion Btu (43,942 MWh-equivalent) in 2022.
Which law requires Kaiser Permanente Zion Medical Center to report its energy use?
Kaiser Permanente Zion Medical Center reports under the Building Energy Benchmarking Ordinance (SDMC Ch. 14 Art. 12), the legal basis of San Diego's Building Energy Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2022 disclosure (source record san_diego:101407:2022). San Diego's ordinance requires annual benchmarking for commercial buildings over 50,000 sq ft, with civil penalties for buildings that fail to report.
More hospital (general medical & surgical) buildings in San Diego
- Scripps Mercy SD - Hospital· 521,805 sq ft · score 100 (A)
- Scripps Memorial Hospital Browning· 415,778 sq ft
- Scripps Cardiovascular Prebys Institute· 404,550 sq ft
- Scripps Green Hospital· 314,663 sq ft · score 46 (D)
- Parking A· 274,748 sq ft
- PHS | Alvarado Hospital Medical Center | East Tower· 185,737 sq ft · score 64 (C)
- All San Diego benchmarked buildings· Building Energy Benchmarking Ordinance (SDMC Ch. 14 Art. 12)
- Most efficient large buildings in San Diego
- Least efficient large buildings in San Diego
- Biggest emitters in San Diego
Frequently asked questions
What is Kaiser Permanente Zion Medical Center's energy grade?
Kaiser Permanente Zion Medical Center scores 61 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2022 San Diego disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Kaiser Permanente Zion Medical Center use?
Its 2022 site energy-use intensity was 230.3 kBtu/ft² across 651,043 sq ft.
What are Kaiser Permanente Zion Medical Center's carbon emissions?
No greenhouse-gas emissions figure was reported for 2022.
Where is Kaiser Permanente Zion Medical Center?
Kaiser Permanente Zion Medical Center is at 4647 Zion Ave., in San Diego, California.
How big is Kaiser Permanente Zion Medical Center and when was it built?
Kaiser Permanente Zion Medical Center has 651,043 sq ft of gross floor area, as reported in its 2022 disclosure. The disclosure lists 1973 as its year built. It is classed as hospital (general medical & surgical).
Is Kaiser Permanente Zion Medical Center covered by the Building Energy Benchmarking Ordinance (SDMC Ch. 14 Art. 12)?
Yes — it appears in the 2022 Building Energy Benchmarking disclosure, which lists the buildings reporting under the Building Energy Benchmarking Ordinance (SDMC Ch. 14 Art. 12).
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About this data
Source: Building Energy Benchmarking (Building Energy Benchmarking Ordinance (SDMC Ch. 14 Art. 12)), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Kaiser Permanente Zion Medical Center, San Diego, California — 2022 benchmarking disclosure”, https://buildingcensus.com/buildings/san-diego/kaiser-permanente-zion-medical-center-5afcb7f3 (data as of July 9, 2026).