Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 97 (band A) |
| Site EUI | 34.6 kBtu/ft² |
| Source EUI | 87.2 kBtu/ft² |
| GHG emissions | 86 tCO₂e |
| GHG intensity | 0.5 kgCO₂e/ft² |
| Electricity | 1,572,818 kWh |
| Natural gas | 10,282 therms |
| Gross floor area | 224,714 sq ft |
| Source record | seattle:50350:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 97 | +1 | 34.6 kBtu/ft² | 86 tCO₂e |
| 2024 | 96 | +4 | 31.7 kBtu/ft² | 75 tCO₂e |
| 2023 | 92 | +1 | 35.8 kBtu/ft² | 129 tCO₂e |
| 2022 | 91 | -5 | 40.2 kBtu/ft² | 165 tCO₂e |
| 2021 | 96 | ±0 | 28.6 kBtu/ft² | 56 tCO₂e |
| 2020 | 96 | -1 | 23.6 kBtu/ft² | 42 tCO₂e |
| 2019 | 97 | -2 | 27.0 kBtu/ft² | 84 tCO₂e |
| 2018 | 99 | 21.3 kBtu/ft² | 79 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
- 76 S KING ST
- City
- Seattle
- State
- Washington
- ZIP
- 98104
- Coordinates
- 47.59867, -122.33519
Within ~1 km
Nearby benchmarked buildings
- Columbia Centerscore 90
Office · 1,952,220 sq ft
- Centurylink Field-Stadiumscore —
Stadium (Open) · 1,913,640 sq ft
- Seattle Municipal Towerscore 86
Office · 1,354,987 sq ft
- 999 Third Avescore 88
Office · 1,323,055 sq ft
- Harbor Steps Ne Sitescore 81
Multifamily Housing · 1,256,335 sq ft
Office · 1,249,055 sq ft
See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is 450 Alaskan's energy grade?
450 Alaskan scores 97 out of 100 on ENERGY STAR — band A (High performer (85–100)) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 450 Alaskan use?
Its 2025 site energy-use intensity was 34.6 kBtu/ft² (87.2 kBtu/ft² source) across 224,714 sq ft, including 1,572,818 kWh of electricity and 10,282 therms of natural gas.
What are 450 Alaskan's carbon emissions?
450 Alaskan reported 86 tCO₂e of greenhouse-gas emissions (0.5 kgCO₂e/ft²) for 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.
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Dataset updated . Source: Building Energy Benchmarking disclosure, record seattle:50350:2025.