Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 94 (band A) |
| Site EUI | 25.4 kBtu/ft² |
| Source EUI | 69.5 kBtu/ft² |
| GHG emissions | 152 tCO₂e |
| GHG intensity | 0.2 kgCO₂e/ft² |
| Electricity | 5,697,591 kWh |
| Natural gas | 7,445 therms |
| Gross floor area | 794,592 sq ft |
| Source record | seattle:423:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 94 | ±0 | 25.4 kBtu/ft² | 152 tCO₂e |
| 2023 | 94 | ±0 | 26.4 kBtu/ft² | 156 tCO₂e |
| 2022 | 94 | -1 | 28.9 kBtu/ft² | 203 tCO₂e |
| 2021 | 95 | -4 | 31.1 kBtu/ft² | 156 tCO₂e |
| 2020 | 99 | +1 | 29.2 kBtu/ft² | 161 tCO₂e |
| 2019 | 98 | +1 | 31.5 kBtu/ft² | 173 tCO₂e |
| 2018 | 97 | +8 | 33.8 kBtu/ft² | 192 tCO₂e |
| 2017 | 89 | +1 | 34.5 kBtu/ft² | 185 tCO₂e |
| 2016 | 88 | -2 | 35.2 kBtu/ft² | 186 tCO₂e |
| 2015 | 90 | 33.6 kBtu/ft² | 181 tCO₂e |
Compliance context
Seattle Energy Benchmarking Ordinance (SMC 22.920)
Seattle's Building Emissions Performance Standard (2023) sets declining carbon targets for buildings over 20,000 sq ft, with penalties for non-compliance beginning in the 2030s.
Ownership
No owner listed in the disclosure.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 600 UNIVERSITY ST
- City
- Seattle
- State
- Washington
- ZIP
- 98101
- Coordinates
- 47.60967, -122.33229
Within ~1 km
Nearby benchmarked buildings
- COLUMBIA CENTERscore 90
Office · 1,952,220 sq ft
- SEATTLE CONVENTION CENTERscore —
Convention Center · 1,842,925 sq ft
- TWO UNION SQUAREscore 96
Office · 1,605,578 sq ft
Office · 1,599,394 sq ft
- DAY 1 TOWER AND SPHERES (Amazon)score 93
Office · 1,599,230 sq ft
- RUSSELL INVESTMENTS CENTERscore 94
Office · 1,592,914 sq ft
See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is ONE UNION SQUARE's energy grade?
ONE UNION SQUARE scores 94 out of 100 on ENERGY STAR — band A (High performer (85–100)) — in its 2024 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does ONE UNION SQUARE use?
Its 2024 site energy-use intensity was 25.4 kBtu/ft² (69.5 kBtu/ft² source) across 794,592 sq ft, including 5,697,591 kWh of electricity and 7,445 therms of natural gas.
What are ONE UNION SQUARE's carbon emissions?
ONE UNION SQUARE reported 152 tCO₂e of greenhouse-gas emissions (0.2 kgCO₂e/ft²) for 2024. Seattle's Building Emissions Performance Standard (2023) sets declining carbon targets for buildings over 20,000 sq ft, with penalties for non-compliance beginning in the 2030s.
Dataset updated . Source: Building Energy Benchmarking disclosure, record seattle:423:2024.