SENATE STATION OFFICE BUILDING
Office in Washington, DC, DC · 220 I Street NE · 20002
At a glance
SENATE STATION OFFICE BUILDING is a 28,404-square-foot office building at 220 I Street NE in Washington, DC, built in 1929. In its 2024 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 83 out of 100 (grade B), a site energy-use intensity of 27.9 kBtu/ft² and 70 tCO₂e of greenhouse-gas emissions. That score is higher than 72% 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 | 83 (band B) |
| Site EUI | 27.9 kBtu/ft² |
| Source EUI | 78.2 kBtu/ft² |
| GHG emissions | 70 tCO₂e |
| GHG intensity | 2.5 kgCO₂e/ft² |
| Electricity | 232,530 kWh |
| Natural gas | 0 therms |
| Water use | 68 kgal |
| Gross floor area | 28,404 sq ft |
| Source record | dc:PM19375506:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 83 | -4 | 27.9 kBtu/ft² | 70 tCO₂e |
| 2023 | 87 | ±0 | 25.0 kBtu/ft² | 64 tCO₂e |
| 2022 | 87 | 25.8 kBtu/ft² | 64 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
PRI/220 I STREET LLC
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Location
- Address
- 220 I Street NE
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20002
- Coordinates
- 38.90153, -77.00259
Within ~1 km
Nearby benchmarked buildings
- Station Place Iscore 68
Office · 788,412 sq ft
Multifamily Housing · 742,606 sq ft
- Hall of the Statesscore 71
Office · 661,116 sq ft
- Two Constitution Squarescore 80
Office · 623,532 sq ft
Office · 598,702 sq ft
- Senate Square (se127)score 51
Multifamily Housing · 576,930 sq ft
See also: most efficient in Washington, DC · biggest emitters
How does SENATE STATION OFFICE BUILDING compare with other office buildings in Washington, DC?
The latest disclosures cover 899 office buildings in Washington, DC, out of 6,870 buildings citywide. SENATE STATION OFFICE BUILDING's ENERGY STAR score of 83 compares with an average of 70 across the 774 that report a score; it scores higher than 72% of them and lower than 25%. Its site EUI of 27.9 kBtu/ft² is about half of 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 2.5 kgCO₂e/ft² is about half of the group average of 5.0 kgCO₂e/ft².
At 28,404 sq ft, it is about 87% below the average floor area of 216,135 sq ft for those buildings. It was built in 1929, 45 years earlier 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 SENATE STATION OFFICE BUILDING's energy performance changed over time?
BuildingCensus holds 3 Washington, DC disclosures for SENATE STATION OFFICE BUILDING, covering report years 2022–2024. Its ENERGY STAR score went from 87 in 2022 to 83 in 2024 (-4 points); its best year on file was 2022, at 87. Site EUI moved from 25.8 kBtu/ft² (2022) to 27.9 kBtu/ft² (2024), an 8% increase. Reported emissions went from 64 tCO₂e to 70 tCO₂e over the same span (up 9%).
What does an ENERGY STAR score of 83 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 83 means the building performs better than about 83% of its national peers. BuildingCensus bands the score into report-card grades; 83 falls in band B — above median (70–84). 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 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. SENATE STATION OFFICE BUILDING's 27.9 kBtu/ft² across 28,404 sq ft works out to about 0.8 billion Btu (232 MWh-equivalent) in 2024. Its source EUI of 78.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 232,530 kWh of electricity, 0 therms of natural gas and 68 thousand gallons of water for the year.
Which law requires SENATE STATION OFFICE BUILDING to report its energy use?
SENATE STATION OFFICE BUILDING 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:PM19375506:2024). 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.
More office buildings in Washington, DC
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- Niobium LLC· 27,821 sq ft · score 69 (C)
- ? Department of Human Services ESA Taylor Street Service Center· 27,600 sq ft · EUI 62.7 kBtu/ft²
- Wyss Foundation· 26,909 sq ft · score 80 (B)
- 717 D Street NW· 26,435 sq ft · score 71 (B)
- 1101 2nd Street North East· 26,210 sq ft · score 69 (C)
- Office buildings in Washington, DC· 899 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 SENATE STATION OFFICE BUILDING's energy grade?
SENATE STATION OFFICE BUILDING scores 83 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 Washington, DC disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does SENATE STATION OFFICE BUILDING use?
Its 2024 site energy-use intensity was 27.9 kBtu/ft² (78.2 kBtu/ft² source) across 28,404 sq ft, including 232,530 kWh of electricity and 0 therms of natural gas.
What are SENATE STATION OFFICE BUILDING's carbon emissions?
SENATE STATION OFFICE BUILDING reported 70 tCO₂e of greenhouse-gas emissions (2.5 kgCO₂e/ft²) for 2024.
Where is SENATE STATION OFFICE BUILDING?
SENATE STATION OFFICE BUILDING is at 220 I Street NE, in Washington, DC 20002. Its coordinates are 38.90153, -77.00259 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is SENATE STATION OFFICE BUILDING and when was it built?
SENATE STATION OFFICE BUILDING has 28,404 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1929 as its year built. It is classed as office.
Is SENATE STATION OFFICE BUILDING 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, “SENATE STATION OFFICE BUILDING, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/senate-station-office-building-579c0d59 (data as of July 9, 2026).