One Maritime Plaza
Commercial in San Francisco, CA · 300 CLAY ST · 94111
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 75 (band B) |
| Site EUI | 43.8 kBtu/ft² |
| Source EUI | 96.4 kBtu/ft² |
| GHG emissions | 1,551 tCO₂e |
| GHG intensity | 2.4 kgCO₂e/ft² |
| Electricity | 5,374,689 kWh |
| Natural gas | 94,723 therms |
| Gross floor area | 635,536 sq ft |
| Source record | sf:0204/021:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 75 | +3 | 43.8 kBtu/ft² | 1,551 tCO₂e |
| 2024 | 72 | +5 | 52.8 kBtu/ft² | 1,962 tCO₂e |
| 2023 | 67 | -2 | 58.6 kBtu/ft² | 2,251 tCO₂e |
| 2022 | 69 | 56.7 kBtu/ft² | 2,115 tCO₂e | |
| 2021 | — | 53.2 kBtu/ft² | 1,830 tCO₂e | |
| 2020 | — | 43.2 kBtu/ft² | 1,585 tCO₂e | |
| 2019 | 81 | +7 | 61.9 kBtu/ft² | 2,436 tCO₂e |
| 2018 | 74 | -11 | 67.3 kBtu/ft² | 2,656 tCO₂e |
| 2017 | 85 | +3 | 73.2 kBtu/ft² | 3,042 tCO₂e |
| 2016 | 82 | -1 | 75.9 kBtu/ft² | 3,476 tCO₂e |
| 2015 | 83 | ±0 | 75.4 kBtu/ft² | 3,309 tCO₂e |
| 2014 | 83 | +3 | 73.2 kBtu/ft² | 3,217 tCO₂e |
| 2013 | 80 | +1 | 85.2 kBtu/ft² | 3,815 tCO₂e |
| 2012 | 79 | +1 | 87.0 kBtu/ft² | 3,996 tCO₂e |
| 2011 | 78 | 88.9 kBtu/ft² | 4,084 tCO₂e |
Compliance context
SF Environment Code Chapter 20
San Francisco's ordinance requires annual benchmarking for commercial buildings over 10,000 sq ft, with administrative penalties for buildings that fail to report.
Ownership
No owner listed in the disclosure.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 300 CLAY ST
- City
- San Francisco
- State
- California
- ZIP
- 94111
- Coordinates
- 37.79561, -122.39923
Within ~1 km
Nearby benchmarked buildings
- 555 Californiascore 75
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- One Market Plazascore 80
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- 555 California Streetscore 76
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- 500 BATTERY STscore —
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See also: most efficient in San Francisco · biggest emitters
Frequently asked questions
What is One Maritime Plaza's energy grade?
One Maritime Plaza scores 75 out of 100 on ENERGY STAR — band B (Above median (70–84)) — in its 2025 San Francisco disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does One Maritime Plaza use?
Its 2025 site energy-use intensity was 43.8 kBtu/ft² (96.4 kBtu/ft² source) across 635,536 sq ft, including 5,374,689 kWh of electricity and 94,723 therms of natural gas.
What are One Maritime Plaza's carbon emissions?
One Maritime Plaza reported 1,551 tCO₂e of greenhouse-gas emissions (2.4 kgCO₂e/ft²) for 2025. San Francisco's ordinance requires annual benchmarking for commercial buildings over 10,000 sq ft, with administrative penalties for buildings that fail to report.
Dataset updated . Source: Existing Buildings Energy Performance Ordinance disclosure, record sf:0204/021:2025.