Jemal's Dupont LLC
Office in Washington, DC, DC · 1630 Connecticut Ave NW · 20009
At a glance
Jemal's Dupont LLC is a 42,980-square-foot office building at 1630 Connecticut Ave NW in Washington, DC, built in 1981. In its 2024 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 52 out of 100 (grade D), a site energy-use intensity of 50.8 kBtu/ft² and 192 tCO₂e of greenhouse-gas emissions. That score is higher than 17% of the 774 scored office buildings in Washington, DC.
Clean and Affordable Energy Act / BEPS · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 52 (band D) |
| Site EUI | 50.8 kBtu/ft² |
| Source EUI | 142.3 kBtu/ft² |
| GHG emissions | 192 tCO₂e |
| GHG intensity | 4.5 kgCO₂e/ft² |
| Electricity | 640,165 kWh |
| Natural gas | 0 therms |
| Water use | 1,452 kgal |
| Gross floor area | 42,980 sq ft |
| Source record | dc:PM3989484:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 52 | +1 | 50.8 kBtu/ft² | 192 tCO₂e |
| 2023 | 51 | 50.8 kBtu/ft² | 196 tCO₂e | |
| 2022 | — | 42.4 kBtu/ft² | 159 tCO₂e | |
| 2021 | 47 | +5 | 42.0 kBtu/ft² | 168 tCO₂e |
| 2020 | 42 | 43.3 kBtu/ft² | 162 tCO₂e | |
| 2013 | — | — | 199 tCO₂e |
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
JAMAL'S DUPONT LLC
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Location
- Address
- 1630 Connecticut Ave NW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20009
- Coordinates
- 38.91205, -77.04525
Within ~1 km
Nearby benchmarked buildings
- DUPONT HOTEL PROJECT OWNER LLCscore 46
Hotel · 1,000,000 sq ft
- HLT Washington DC-SVscore 73
Hotel · 973,414 sq ft
- Washington Hilton (DCAWH)score 93
Hotel · 973,414 sq ft
- Washington Hiltonscore 42
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- Washington Hiltonscore 1
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- Lafayette Centrescore 74
Office · 908,482 sq ft
See also: most efficient in Washington, DC · biggest emitters
How does Jemal's Dupont LLC compare with other office buildings in Washington, DC?
The latest disclosures cover 899 office buildings in Washington, DC, out of 6,870 buildings citywide. Jemal's Dupont LLC's ENERGY STAR score of 52 compares with an average of 70 across the 774 that report a score; it scores higher than 17% of them and lower than 82%. Its site EUI of 50.8 kBtu/ft² is roughly in line with the average of 55.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 4.5 kgCO₂e/ft² is about 11% below the group average of 5.0 kgCO₂e/ft².
At 42,980 sq ft, it is about 80% below the average floor area of 216,135 sq ft for those buildings. It was built in 1981, 7 years later than the group's average year built (1974). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has Jemal's Dupont LLC's energy performance changed over time?
BuildingCensus holds 6 Washington, DC disclosures for Jemal's Dupont LLC, covering report years 2013, 2020, 2021, 2022, 2023, 2024. Its ENERGY STAR score went from 42 in 2020 to 52 in 2024 (+10 points). Site EUI moved from 43.3 kBtu/ft² (2020) to 50.8 kBtu/ft² (2024), an 17% increase. Reported emissions went from 199 tCO₂e to 192 tCO₂e over the same span (down 4%).
What does an ENERGY STAR score of 52 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 52 means the building performs better than about 52% of its national peers. BuildingCensus bands the score into report-card grades; 52 falls in band D — lowest band (1–54). It sits 23 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. Jemal's Dupont LLC's 50.8 kBtu/ft² across 42,980 sq ft works out to about 2.2 billion Btu (640 MWh-equivalent) in 2024. Its source EUI of 142.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 640,165 kWh of electricity, 0 therms of natural gas and 1,452 thousand gallons of water for the year.
Which law requires Jemal's Dupont LLC to report its energy use?
Jemal's Dupont LLC 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 2024 disclosure (source record dc:PM3989484:2024). 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.
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Frequently asked questions
What is Jemal's Dupont LLC's energy grade?
Jemal's Dupont LLC scores 52 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 Washington, DC disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Jemal's Dupont LLC use?
Its 2024 site energy-use intensity was 50.8 kBtu/ft² (142.3 kBtu/ft² source) across 42,980 sq ft, including 640,165 kWh of electricity and 0 therms of natural gas.
What are Jemal's Dupont LLC's carbon emissions?
Jemal's Dupont LLC reported 192 tCO₂e of greenhouse-gas emissions (4.5 kgCO₂e/ft²) for 2024.
Where is Jemal's Dupont LLC?
Jemal's Dupont LLC is at 1630 Connecticut Ave NW, in Washington, DC 20009. Its coordinates are 38.91205, -77.04525 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Jemal's Dupont LLC and when was it built?
Jemal's Dupont LLC has 42,980 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1981 as its year built. It is classed as office.
Is Jemal's Dupont LLC covered by the Clean and Affordable Energy Act / BEPS?
Yes — it appears in the 2024 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, “Jemal's Dupont LLC, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/jemal-s-dupont-llc-c8462cc4 (data as of July 9, 2026).