Summit Atlas Charter School
K-12 School in Seattle, WA · 9601 35TH AVE SW · 98126
At a glance
Summit Atlas Charter School is a 23,772-square-foot K-12 school at 9601 35TH AVE SW in Seattle, Washington, built in 1971. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 87 out of 100 (grade A), a site energy-use intensity of 23.2 kBtu/ft² and 6 tCO₂e of greenhouse-gas emissions. That score is higher than 73% of the 152 scored K-12 school buildings in Seattle.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 87 (band A) |
| Site EUI | 23.2 kBtu/ft² |
| Source EUI | 65.0 kBtu/ft² |
| GHG emissions | 6 tCO₂e |
| GHG intensity | 0.1 kgCO₂e/ft² |
| Electricity | 324,339 kWh |
| Gross floor area | 23,772 sq ft |
| Source record | seattle:22830:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 87 | ±0 | 23.2 kBtu/ft² | 6 tCO₂e |
| 2024 | 87 | -2 | 23.2 kBtu/ft² | 6 tCO₂e |
| 2023 | 89 | -4 | 22.2 kBtu/ft² | 6 tCO₂e |
| 2022 | 93 | -6 | 20.7 kBtu/ft² | 6 tCO₂e |
| 2021 | 99 | 14.3 kBtu/ft² | 4 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
- 9601 35TH AVE SW
- City
- Seattle
- State
- Washington
- ZIP
- 98126
- Coordinates
- 47.51709, -122.37797
Within ~1 km
Nearby benchmarked buildings
K-12 School · 78,972 sq ft
K-12 School · 46,797 sq ft
- Olympic Park Condominiumscore 87
Multifamily Housing · 42,084 sq ft
- Westside Schoolscore 97
K-12 School · 35,844 sq ft
- Barton Court Aptsscore 100
Multifamily Housing · 31,499 sq ft
See also: most efficient in Seattle · biggest emitters
How does Summit Atlas Charter School compare with other K-12 school buildings in Seattle?
The latest disclosures cover 153 K-12 school buildings in Seattle, out of 3,871 buildings citywide. Summit Atlas Charter School's ENERGY STAR score of 87 compares with an average of 71 across the 152 that report a score; it scores higher than 73% of them and lower than 24%. Its site EUI of 23.2 kBtu/ft² is about 39% below the average of 38.3 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.1 kgCO₂e/ft² is about 88% below the group average of 1.1 kgCO₂e/ft².
At 23,772 sq ft, it is about 70% below the average floor area of 79,329 sq ft for those buildings. Its 1971 construction date is close to the group's average year built (1970). Across all 24 jurisdictions BuildingCensus covers, the 6,548 K-12 school buildings average an ENERGY STAR score of 64 and a site EUI of 52.7 kBtu/ft².
How has Summit Atlas Charter School's energy performance changed over time?
BuildingCensus holds 5 Seattle disclosures for Summit Atlas Charter School, covering report years 2021–2025. Its ENERGY STAR score went from 99 in 2021 to 87 in 2025 (-12 points); its best year on file was 2021, at 99. Site EUI moved from 14.3 kBtu/ft² (2021) to 23.2 kBtu/ft² (2025), an 62% increase. Reported emissions went from 4 tCO₂e to 6 tCO₂e over the same span (up 61%).
What does an ENERGY STAR score of 87 mean?
ENERGY STAR scores run from 1 to 100 and are computed by the EPA's Portfolio Manager as a percentile against similar buildings nationwide, adjusted for climate, size and use: a score of 87 means the building performs better than about 87% of its national peers. BuildingCensus bands the score into report-card grades; 87 falls in band A — high performer (85–100). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. In Seattle, 69% of scored buildings are at 75 or above.
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. Summit Atlas Charter School's 23.2 kBtu/ft² across 23,772 sq ft works out to about 0.6 billion Btu (162 MWh-equivalent) in 2025. Its source EUI of 65.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 324,339 kWh of electricity for the year.
Which law requires Summit Atlas Charter School to report its energy use?
Summit Atlas Charter School 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:22830:2025). 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 K-12 school buildings in Seattle
- Christ The King Middle School· 23,222 sq ft · score 82 (B)
- Asb School· 23,190 sq ft · score 17 (D)
- Spruce Street School· 22,860 sq ft · score 41 (D)
- Social Security Administration· 21,600 sq ft · EUI 12.7 kBtu/ft²
- St Mary Giddens School· 21,592 sq ft · score 27 (D)
- Our Lady Of Fatima School & Gym· 20,811 sq ft · score 27 (D)
- K-12 School buildings in Seattle· 153 benchmarked
- All Seattle benchmarked buildings· Seattle Energy Benchmarking Ordinance (SMC 22.920)
- Most efficient large buildings in Seattle
- Least efficient large buildings in Seattle
- Biggest emitters in Seattle
Frequently asked questions
What is Summit Atlas Charter School's energy grade?
Summit Atlas Charter School scores 87 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 Summit Atlas Charter School use?
Its 2025 site energy-use intensity was 23.2 kBtu/ft² (65.0 kBtu/ft² source) across 23,772 sq ft, including 324,339 kWh of electricity.
What are Summit Atlas Charter School's carbon emissions?
Summit Atlas Charter School reported 6 tCO₂e of greenhouse-gas emissions (0.1 kgCO₂e/ft²) for 2025.
Where is Summit Atlas Charter School?
Summit Atlas Charter School is at 9601 35TH AVE SW, in Seattle, Washington 98126. Its coordinates are 47.51709, -122.37797 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Summit Atlas Charter School and when was it built?
Summit Atlas Charter School has 23,772 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1971 as its year built. It is classed as K-12 school.
Is Summit Atlas Charter School 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, “Summit Atlas Charter School, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/summit-atlas-charter-school-2c7f6b9c (data as of October 2, 2026).