42SUL-W Washington, D.C.
Hotel in Washington, DC, DC · 515 15th Street NW · 20004
At a glance
42SUL-W Washington, D.C. is a 225,000-square-foot hotel at 515 15th Street NW in Washington, DC, built in 1919. In its 2017 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 42 out of 100 (grade D), a site energy-use intensity of 118.9 kBtu/ft² and 3,011 tCO₂e of greenhouse-gas emissions. That score is higher than 25% of the 251 scored hotel buildings in Washington, DC.
Clean and Affordable Energy Act / BEPS · reporting year 2017
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 42 (band D) |
| Site EUI | 118.9 kBtu/ft² |
| Source EUI | 272.8 kBtu/ft² |
| GHG emissions | 3,011 tCO₂e |
| GHG intensity | 13.4 kgCO₂e/ft² |
| Electricity | 4,667,660 kWh |
| Natural gas | 108,252 therms |
| Water use | 15,241 kgal |
| Gross floor area | 225,000 sq ft |
| Source record | dc:PM6277982:2017 |
Compliance context
Clean and Affordable Energy Act / BEPS
DC's Building Energy Performance Standards (BEPS) require buildings below the performance standard to improve over compliance cycles (the first ends December 31, 2026; later cycles run five years), with penalties for buildings that fail to meet their pathway.
Ownership
ISTITHMAR HOTELS WASHINGTON LLC
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Location
- Address
- 515 15th Street NW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20004
- Coordinates
- 38.89716, -77.03309
Within ~1 km
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- NGS Headquartersscore 68
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See also: most efficient in Washington, DC · biggest emitters
How does 42SUL-W Washington, D.C. compare with other hotel buildings in Washington, DC?
The latest disclosures cover 257 hotel buildings in Washington, DC, out of 6,870 buildings citywide. 42SUL-W Washington, D.C.'s ENERGY STAR score of 42 compares with an average of 58 across the 251 that report a score; it scores higher than 25% of them and lower than 72%. Its site EUI of 118.9 kBtu/ft² is about 36% above the average of 87.6 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 13.4 kgCO₂e/ft² is about twice the group average of 6.9 kgCO₂e/ft².
At 225,000 sq ft, it is roughly in line with the average floor area of 227,860 sq ft for those buildings. It was built in 1919, 55 years earlier than the group's average year built (1974). Across all 24 jurisdictions BuildingCensus covers, the 3,812 hotel buildings average an ENERGY STAR score of 65 and a site EUI of 77.8 kBtu/ft².
What does an ENERGY STAR score of 42 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 42 means the building performs better than about 42% of its national peers. BuildingCensus bands the score into report-card grades; 42 falls in band D — lowest band (1–54). It sits 33 points below 75, the threshold for ENERGY STAR certification. In Washington, DC, 47% 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. 42SUL-W Washington, D.C.'s 118.9 kBtu/ft² across 225,000 sq ft works out to about 26.8 billion Btu (7,840 MWh-equivalent) in 2017. Its source EUI of 272.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 4,667,660 kWh of electricity, 108,252 therms of natural gas and 15,241 thousand gallons of water for the year.
Which law requires 42SUL-W Washington, D.C. to report its energy use?
42SUL-W Washington, D.C. reports under the Clean and Affordable Energy Act / BEPS, the legal basis of Washington, DC's Building Energy Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2017 disclosure (source record dc:PM6277982:2017). DC's Building Energy Performance Standards (BEPS) require buildings below the performance standard to improve over compliance cycles (the first ends December 31, 2026; later cycles run five years), with penalties for buildings that fail to meet their pathway.
More hotel buildings in Washington, DC
- Hamilton Hotel DC· 222,000 sq ft · score 60 (C)
- Hamilton Hotel DC· 222,000 sq ft · score 64 (C)
- HST Lesee CMBS LLC DBA The Westin Georgetown· 219,252 sq ft · score 24 (D)
- Fairfax at Embassy Row· 217,504 sq ft · score 38 (D)
- The Fairfax at Embassy Row· 217,504 sq ft · score 100 (A)
- The Westin Georgetown· 212,483 sq ft · score 50 (D)
- Hotel buildings in Washington, DC· 257 benchmarked
- All Washington, DC benchmarked buildings· Clean and Affordable Energy Act / BEPS
- Most efficient large buildings in Washington, DC
- Least efficient large buildings in Washington, DC
- Biggest emitters in Washington, DC
Frequently asked questions
What is 42SUL-W Washington, D.C.'s energy grade?
42SUL-W Washington, D.C. scores 42 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2017 Washington, DC disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 42SUL-W Washington, D.C. use?
Its 2017 site energy-use intensity was 118.9 kBtu/ft² (272.8 kBtu/ft² source) across 225,000 sq ft, including 4,667,660 kWh of electricity and 108,252 therms of natural gas.
What are 42SUL-W Washington, D.C.'s carbon emissions?
42SUL-W Washington, D.C. reported 3,011 tCO₂e of greenhouse-gas emissions (13.4 kgCO₂e/ft²) for 2017.
Where is 42SUL-W Washington, D.C.?
42SUL-W Washington, D.C. is at 515 15th Street NW, in Washington, DC 20004. Its coordinates are 38.89716, -77.03309 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is 42SUL-W Washington, D.C. and when was it built?
42SUL-W Washington, D.C. has 225,000 sq ft of gross floor area, as reported in its 2017 disclosure. The disclosure lists 1919 as its year built. It is classed as hotel.
Is 42SUL-W Washington, D.C. covered by the Clean and Affordable Energy Act / BEPS?
Yes — it appears in the 2017 Building Energy Benchmarking disclosure, which lists the buildings reporting under the Clean and Affordable Energy Act / BEPS.
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About this data
Source: Building Energy Benchmarking (Clean and Affordable Energy Act / BEPS), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “42SUL-W Washington, D.C., Washington, DC — 2017 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/42sul-w-washington-d-c-a82f4cca (data as of July 9, 2026).