Ontario Mills D
Distribution Center in California, CA · 5300 Ontario Mills Parkway, Ontario · 91764
At a glance
Ontario Mills D is a 138,498-square-foot distribution center at 5300 Ontario Mills Parkway, Ontario in Ontario, California, built in 2007. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 69 out of 100 (grade C), a site energy-use intensity of 6.6 kBtu/ft² and 61 tCO₂e of greenhouse-gas emissions. That score is higher than 40% of the 2,485 scored distribution center buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 69 (band C) |
| Site EUI | 6.6 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 61 tCO₂e |
| GHG intensity | 0.4 kgCO₂e/ft² |
| Electricity | 268,764 kWh |
| Gross floor area | 138,498 sq ft |
| Source record | california:4194777:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 69 | -3 | 6.6 kBtu/ft² | 61 tCO₂e |
| 2022 | 72 | 6.1 kBtu/ft² | 58 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
- 5300 Ontario Mills Parkway, Ontario
- City
- California
- State
- California
- ZIP
- 91764
- Coordinates
- 34.06885, -117.53684
Within ~1 km
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See also: most efficient in California · biggest emitters
How does Ontario Mills D compare with other distribution center buildings in California?
The latest disclosures cover 3,121 distribution center buildings in California, out of 40,029 buildings citywide. Ontario Mills D's ENERGY STAR score of 69 compares with an average of 67 across the 2,485 that report a score; it scores higher than 40% of them and lower than 60%. Its site EUI of 6.6 kBtu/ft² is about 67% below the average of 19.8 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.4 kgCO₂e/ft² is about 66% below the group average of 1.3 kgCO₂e/ft².
At 138,498 sq ft, it is about 42% below the average floor area of 238,298 sq ft for those buildings. It was built in 2007, 13 years later than the group's average year built (1994). Across all 24 jurisdictions BuildingCensus covers, the 4,082 distribution center buildings average an ENERGY STAR score of 65 and a site EUI of 24.2 kBtu/ft².
How has Ontario Mills D's energy performance changed over time?
BuildingCensus holds 2 California disclosures for Ontario Mills D, covering report years 2022, 2024. Its ENERGY STAR score went from 72 in 2022 to 69 in 2024 (-3 points); its best year on file was 2022, at 72. Site EUI moved from 6.1 kBtu/ft² (2022) to 6.6 kBtu/ft² (2024), an 8% increase. Reported emissions went from 58 tCO₂e to 61 tCO₂e over the same span (up 4%).
What does an ENERGY STAR score of 69 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 69 means the building performs better than about 69% of its national peers. BuildingCensus bands the score into report-card grades; 69 falls in band C — below median (55–69). It sits 6 points below 75, the threshold for ENERGY STAR certification. 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. Ontario Mills D's 6.6 kBtu/ft² across 138,498 sq ft works out to about 0.9 billion Btu (268 MWh-equivalent) in 2024. The disclosure also reports 268,764 kWh of electricity for the year.
Which law requires Ontario Mills D to report its energy use?
Ontario Mills D 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:4194777:2024). 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 distribution center buildings in California
- Tri West Stockton - 4466 Pock Ln, Stockton, Ca 95206, Usa· 138,448 sq ft · score 93 (A)
- Lc&K· 138,000 sq ft · score 99 (A)
- Ine01605 - Riverside Dc 5· 137,840 sq ft · score 1 (D)
- 2843 S. East Ave.· 137,800 sq ft · score 93 (A)
- 10175Iro· 137,500 sq ft · score 57 (C)
- Sba02901 - North San Jose 9· 137,500 sq ft · score 92 (A)
- Distribution Center buildings in California· 3,121 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 Ontario Mills D's energy grade?
Ontario Mills D scores 69 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Ontario Mills D use?
Its 2024 site energy-use intensity was 6.6 kBtu/ft² across 138,498 sq ft, including 268,764 kWh of electricity.
What are Ontario Mills D's carbon emissions?
Ontario Mills D reported 61 tCO₂e of greenhouse-gas emissions (0.4 kgCO₂e/ft²) for 2024.
Where is Ontario Mills D?
Ontario Mills D is at 5300 Ontario Mills Parkway, Ontario, in Ontario, California 91764. Its coordinates are 34.06885, -117.53684 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Ontario Mills D and when was it built?
Ontario Mills D has 138,498 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2007 as its year built. It is classed as distribution center.
Is Ontario Mills D 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, “Ontario Mills D, Ontario, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/ontario-mills-d-26297960 (data as of July 9, 2026).