Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 96 (band A) |
| Site EUI | 24.1 kBtu/ft² |
| Source EUI | 65.9 kBtu/ft² |
| GHG emissions | 346 tCO₂e |
| GHG intensity | 0.3 kgCO₂e/ft² |
| Electricity | 11,783,240 kWh |
| Natural gas | 5,800 therms |
| Gross floor area | 1,605,578 sq ft |
| Source record | seattle:422:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 96 | ±0 | 24.1 kBtu/ft² | 346 tCO₂e |
| 2023 | 96 | ±0 | 24.6 kBtu/ft² | 367 tCO₂e |
| 2022 | 96 | -1 | 25.4 kBtu/ft² | 426 tCO₂e |
| 2021 | 97 | +3 | 24.6 kBtu/ft² | 398 tCO₂e |
| 2020 | 94 | +1 | 36.8 kBtu/ft² | 428 tCO₂e |
| 2019 | 93 | +2 | 38.7 kBtu/ft² | 492 tCO₂e |
| 2018 | 91 | +1 | 40.7 kBtu/ft² | 456 tCO₂e |
| 2017 | 90 | -7 | 34.9 kBtu/ft² | 392 tCO₂e |
| 2016 | 97 | ±0 | 36.8 kBtu/ft² | 475 tCO₂e |
| 2015 | 97 | 35.9 kBtu/ft² | 446 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
- 601 UNION ST
- City
- Seattle
- State
- Washington
- ZIP
- 98101
- Coordinates
- 47.61043, -122.33206
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
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
- US BANK CENTERscore 87
Office · 1,536,606 sq ft
See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is TWO UNION SQUARE's energy grade?
TWO UNION SQUARE scores 96 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 TWO UNION SQUARE use?
Its 2024 site energy-use intensity was 24.1 kBtu/ft² (65.9 kBtu/ft² source) across 1,605,578 sq ft, including 11,783,240 kWh of electricity and 5,800 therms of natural gas.
What are TWO UNION SQUARE's carbon emissions?
TWO UNION SQUARE reported 346 tCO₂e of greenhouse-gas emissions (0.3 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:422:2024.