Chihuly Garden & Glass
Museum in Seattle, WA · 305 HARRISON ST · 98109
At a glance
Chihuly Garden & Glass is a 30,533-square-foot museum building at 305 HARRISON ST in Seattle, Washington, built in 1998. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 201.1 kBtu/ft² and 178 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 201.1 kBtu/ft² |
| Source EUI | 373.3 kBtu/ft² |
| GHG emissions | 178 tCO₂e |
| GHG intensity | 6.1 kgCO₂e/ft² |
| Electricity | 797,393 kWh |
| Natural gas | 31,804 therms |
| Gross floor area | 30,533 sq ft |
| Source record | seattle:21433:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 201.1 kBtu/ft² | 178 tCO₂e | |
| 2024 | — | 199.0 kBtu/ft² | 173 tCO₂e | |
| 2023 | — | 522.5 kBtu/ft² | 242 tCO₂e | |
| 2022 | — | 505.0 kBtu/ft² | 220 tCO₂e | |
| 2021 | — | 352.0 kBtu/ft² | 249 tCO₂e | |
| 2020 | — | 272.7 kBtu/ft² | 163 tCO₂e | |
| 2019 | — | 553.6 kBtu/ft² | 240 tCO₂e | |
| 2018 | — | 216.8 kBtu/ft² | 196 tCO₂e | |
| 2017 | — | 229.3 kBtu/ft² | 215 tCO₂e | |
| 2016 | — | 206.2 kBtu/ft² | 189 tCO₂e | |
| 2015 | — | 210.1 kBtu/ft² | 180 tCO₂e |
Compliance context
Seattle Energy Benchmarking Ordinance (SMC 22.920)
Seattle's Building Emissions Performance Standard (adopted 2023) applies to buildings over 20,000 sq ft: benchmarking verification is due 2027–2030 and initial emissions targets 2031–2035, reaching net zero by 2041–2050, with fines for non-compliance.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 305 HARRISON ST
- City
- Seattle
- State
- Washington
- ZIP
- 98109
- Coordinates
- 47.62141, -122.35086
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does Chihuly Garden & Glass compare with other museum buildings in Seattle?
The latest disclosures cover 10 museum buildings in Seattle, out of 3,871 buildings citywide. Its site EUI of 201.1 kBtu/ft² is about 77% above the average of 113.3 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 6.1 kgCO₂e/ft² is about 69% above the group average of 3.6 kgCO₂e/ft².
At 30,533 sq ft, it is about 71% below the average floor area of 105,838 sq ft for those buildings. It was built in 1998, 27 years later than the group's average year built (1971).
How has Chihuly Garden & Glass's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Chihuly Garden & Glass, covering report years 2015–2025. Site EUI moved from 210.1 kBtu/ft² (2015) to 201.1 kBtu/ft² (2025), a 4% decrease. Reported emissions went from 180 tCO₂e to 178 tCO₂e over the same span (down 1%).
What does a site EUI of 201.1 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. Chihuly Garden & Glass's 201.1 kBtu/ft² across 30,533 sq ft works out to about 6.1 billion Btu (1,800 MWh-equivalent) in 2025. Its source EUI of 373.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 797,393 kWh of electricity and 31,804 therms of natural gas for the year.
Which law requires Chihuly Garden & Glass to report its energy use?
Chihuly Garden & Glass reports under the Seattle Energy Benchmarking Ordinance (SMC 22.920), the legal basis of Seattle's Building Energy Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2025 disclosure (source record seattle:21433:2025). Seattle's Building Emissions Performance Standard (adopted 2023) applies to buildings over 20,000 sq ft: benchmarking verification is due 2027–2030 and initial emissions targets 2031–2035, reaching net zero by 2041–2050, with fines for non-compliance.
More museum buildings in Seattle
Frequently asked questions
What is Chihuly Garden & Glass's energy grade?
Chihuly Garden & Glass did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 201.1 kBtu/ft².
How much energy does Chihuly Garden & Glass use?
Its 2025 site energy-use intensity was 201.1 kBtu/ft² (373.3 kBtu/ft² source) across 30,533 sq ft, including 797,393 kWh of electricity and 31,804 therms of natural gas.
What are Chihuly Garden & Glass's carbon emissions?
Chihuly Garden & Glass reported 178 tCO₂e of greenhouse-gas emissions (6.1 kgCO₂e/ft²) for 2025.
Where is Chihuly Garden & Glass?
Chihuly Garden & Glass is at 305 HARRISON ST, in Seattle, Washington 98109. Its coordinates are 47.62141, -122.35086 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Chihuly Garden & Glass and when was it built?
Chihuly Garden & Glass has 30,533 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1998 as its year built. It is classed as museum.
Is Chihuly Garden & Glass covered by the Seattle Energy Benchmarking Ordinance (SMC 22.920)?
Yes — it appears in the 2025 Building Energy Benchmarking disclosure, which lists the buildings reporting under the Seattle Energy Benchmarking Ordinance (SMC 22.920).
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About this data
Source: Building Energy Benchmarking (Seattle Energy Benchmarking Ordinance (SMC 22.920)), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Chihuly Garden & Glass, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/chihuly-garden-glass-f7af17a4 (data as of October 2, 2026).