1120 G Street, NW
Office in Washington, DC, DC · 20005
At a glance
1120 G Street, NW is a 141,397-square-foot office building in Washington, DC, built in 1981. In its 2024 Washington, DC benchmarking disclosure it reported a site energy-use intensity of 36.5 kBtu/ft² and 395 tCO₂e of greenhouse-gas emissions.
Clean and Affordable Energy Act / BEPS · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 36.5 kBtu/ft² |
| Source EUI | 81.6 kBtu/ft² |
| GHG emissions | 395 tCO₂e |
| GHG intensity | 2.8 kgCO₂e/ft² |
| Electricity | 1,025,417 kWh |
| Natural gas | 16,647 therms |
| Water use | 966 kgal |
| Gross floor area | 141,397 sq ft |
| Source record | dc:PM1419589:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 36.5 kBtu/ft² | 395 tCO₂e | |
| 2023 | — | 39.8 kBtu/ft² | 442 tCO₂e | |
| 2022 | 100 | +26 | 51.1 kBtu/ft² | 559 tCO₂e |
| 2021 | 74 | ±0 | 69.1 kBtu/ft² | 868 tCO₂e |
| 2020 | 74 | +12 | 67.7 kBtu/ft² | 872 tCO₂e |
| 2019 | 62 | ±0 | 100.8 kBtu/ft² | 1,311 tCO₂e |
| 2018 | 62 | -8 | 113.3 kBtu/ft² | 1,490 tCO₂e |
| 2017 | 70 | +2 | 114.2 kBtu/ft² | 1,737 tCO₂e |
| 2016 | 68 | -4 | 123.5 kBtu/ft² | 1,934 tCO₂e |
| 2015 | 72 | +3 | 123.7 kBtu/ft² | 2,257 tCO₂e |
| 2014 | 69 | 127.7 kBtu/ft² | 2,308 tCO₂e | |
| 2013 | — | 60.1 kBtu/ft² | 971 tCO₂e | |
| 2012 | 100 | 134.3 kBtu/ft² | 2,440 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
G ST WASHINGTON REAL ESTATE HOLDING LLC
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 1120 G Street, NW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20005
- Coordinates
- 38.89798, -77.02776
Within ~1 km
Nearby benchmarked buildings
Convention Center · 1,750,000 sq ft
- 616 E St.score —
Multifamily Housing · 1,150,961 sq ft
Hotel · 1,081,202 sq ft
Multifamily Housing · 1,075,449 sq ft
- Midtown Centerscore 91
Office · 911,093 sq ft
Office · 887,915 sq ft
See also: most efficient in Washington, DC · biggest emitters
How does 1120 G Street, NW compare with other office buildings in Washington, DC?
The latest disclosures cover 899 office buildings in Washington, DC, out of 6,870 buildings citywide. Its site EUI of 36.5 kBtu/ft² is about 34% below 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 2.8 kgCO₂e/ft² is about 44% below the group average of 5.0 kgCO₂e/ft².
At 141,397 sq ft, it is about 35% 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 1120 G Street, NW's energy performance changed over time?
BuildingCensus holds 13 Washington, DC disclosures for 1120 G Street, NW, covering report years 2012–2024. Its ENERGY STAR score was 100 in both 2012 and 2022. Site EUI moved from 134.3 kBtu/ft² (2012) to 36.5 kBtu/ft² (2024), a 73% decrease. Reported emissions went from 2,440 tCO₂e to 395 tCO₂e over the same span (down 84%).
What does a site EUI of 36.5 kBtu/ft² mean?
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. 1120 G Street, NW's 36.5 kBtu/ft² across 141,397 sq ft works out to about 5.2 billion Btu (1,513 MWh-equivalent) in 2024. Its source EUI of 81.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,025,417 kWh of electricity, 16,647 therms of natural gas and 966 thousand gallons of water for the year.
Which law requires 1120 G Street, NW to report its energy use?
1120 G Street, NW 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:PM1419589:2024). 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
- 1100 15th Street (DDOE)· 140,482 sq ft · score 78 (B)
- Jemal's Historic Row· 138,889 sq ft · EUI 66.8 kBtu/ft²
- 1600 I Street Corporation· 138,872 sq ft · score 84 (B)
- 1750 H Street· 138,748 sq ft · score 91 (A)
- Laborerss' International Union of NA· 138,488 sq ft · score 47 (D)
- 1399 Executive Tower· 138,038 sq ft · score 51 (D)
- 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 1120 G Street, NW's energy grade?
1120 G Street, NW did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 36.5 kBtu/ft².
How much energy does 1120 G Street, NW use?
Its 2024 site energy-use intensity was 36.5 kBtu/ft² (81.6 kBtu/ft² source) across 141,397 sq ft, including 1,025,417 kWh of electricity and 16,647 therms of natural gas.
What are 1120 G Street, NW's carbon emissions?
1120 G Street, NW reported 395 tCO₂e of greenhouse-gas emissions (2.8 kgCO₂e/ft²) for 2024.
Where is 1120 G Street, NW?
1120 G Street, NW is in Washington, DC 20005. Its coordinates are 38.89798, -77.02776 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is 1120 G Street, NW and when was it built?
1120 G Street, NW has 141,397 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 1120 G Street, NW 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.
Working with Washington, DC building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “1120 G Street, NW, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/1120-g-street-nw-2ebcbc6c (data as of July 9, 2026).