Element By Westin
Hotel in California, CA · 900 Via Piemonte, Ontario · 91764
At a glance
Element By Westin is a 90,000-square-foot hotel at 900 Via Piemonte, Ontario in Ontario, California, built in 2020. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 55 out of 100 (grade C), a site energy-use intensity of 41.4 kBtu/ft² and 246 tCO₂e of greenhouse-gas emissions. That score is higher than 22% of the 1,525 scored hotel buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 55 (band C) |
| Site EUI | 41.4 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 246 tCO₂e |
| GHG intensity | 2.7 kgCO₂e/ft² |
| Electricity | 1,085,486 kWh |
| Gross floor area | 90,000 sq ft |
| Source record | california:58068992:2024 |
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
- 900 Via Piemonte, Ontario
- City
- California
- State
- California
- ZIP
- 91764
- Coordinates
- 34.07423, -117.56483
Within ~1 km
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See also: most efficient in California · biggest emitters
How does Element By Westin compare with other hotel buildings in California?
The latest disclosures cover 1,599 hotel buildings in California, out of 40,029 buildings citywide. Element By Westin's ENERGY STAR score of 55 compares with an average of 74 across the 1,525 that report a score; it scores higher than 22% of them and lower than 78%. Its site EUI of 41.4 kBtu/ft² is about 37% below the average of 65.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 2.7 kgCO₂e/ft² is about 32% below the group average of 4.0 kgCO₂e/ft².
At 90,000 sq ft, it is about half of the average floor area of 167,786 sq ft for those buildings. It was built in 2020, 32 years later than the group's average year built (1988). Across all 24 jurisdictions BuildingCensus covers, the 3,812 hotel buildings average an ENERGY STAR score of 65 and a site EUI of 77.8 kBtu/ft².
What does an ENERGY STAR score of 55 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 55 means the building performs better than about 55% of its national peers. BuildingCensus bands the score into report-card grades; 55 falls in band C — below median (55–69). It sits 20 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. Element By Westin's 41.4 kBtu/ft² across 90,000 sq ft works out to about 3.7 billion Btu (1,092 MWh-equivalent) in 2024. The disclosure also reports 1,085,486 kWh of electricity for the year.
Which law requires Element By Westin to report its energy use?
Element By Westin 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:58068992:2024). 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 hotel buildings in California
- 136-138 King Street· 89,778 sq ft · score 89 (A)
- Hws - Fresno, Ca· 89,705 sq ft · score 91 (A)
- Bass Lake· 89,534 sq ft · score 93 (A)
- Hilton Garden Inn Goleta· 89,495 sq ft · score 76 (B)
- 8573-San Diego - Hotel Circle· 89,474 sq ft · score 100 (A)
- Courtyard By Marriott Long Beach Airport· 89,455 sq ft · score 1 (D)
- Hotel buildings in California· 1,599 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 Element By Westin's energy grade?
Element By Westin scores 55 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 Element By Westin use?
Its 2024 site energy-use intensity was 41.4 kBtu/ft² across 90,000 sq ft, including 1,085,486 kWh of electricity.
What are Element By Westin's carbon emissions?
Element By Westin reported 246 tCO₂e of greenhouse-gas emissions (2.7 kgCO₂e/ft²) for 2024.
Where is Element By Westin?
Element By Westin is at 900 Via Piemonte, Ontario, in Ontario, California 91764. Its coordinates are 34.07423, -117.56483 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Element By Westin and when was it built?
Element By Westin has 90,000 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2020 as its year built. It is classed as hotel.
Is Element By Westin 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, “Element By Westin, Ontario, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/element-by-westin-1977124f (data as of July 9, 2026).