1001 Connecticut Ave NW: 1001 Connecticut Avenue Northwest

How does 1001 Connecticut Ave NW: 1001 Connecticut Avenue Northwest compare with other office buildings in Washington, DC?

The latest disclosures cover 899 office buildings in Washington, DC, out of 6,870 buildings citywide. 1001 Connecticut Ave NW: 1001 Connecticut Avenue Northwest's ENERGY STAR score of 93 compares with an average of 70 across the 774 that report a score; it scores higher than 94% of them and lower than 5%. Its site EUI of 36.2 kBtu/ft² is about 35% 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 2.9 kgCO₂e/ft² is about 41% below the group average of 5.0 kgCO₂e/ft².

At 166,407 sq ft, it is about 23% below the average floor area of 216,135 sq ft for those buildings. It was built in 1953, 21 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 1001 Connecticut Ave NW: 1001 Connecticut Avenue Northwest's energy performance changed over time?

BuildingCensus holds 7 Washington, DC disclosures for 1001 Connecticut Ave NW: 1001 Connecticut Avenue Northwest, covering report years 2018–2024. Its ENERGY STAR score went from 87 in 2018 to 93 in 2024 (+6 points); its best year on file was 2019, at 100. Site EUI moved from 45.0 kBtu/ft² (2018) to 36.2 kBtu/ft² (2024), a 20% decrease. Reported emissions went from 646 tCO₂e to 488 tCO₂e over the same span (down 24%).

What does an ENERGY STAR score of 93 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 93 means the building performs better than about 93% of its national peers. BuildingCensus bands the score into report-card grades; 93 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 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. 1001 Connecticut Ave NW: 1001 Connecticut Avenue Northwest's 36.2 kBtu/ft² across 166,407 sq ft works out to about 6 billion Btu (1,765 MWh-equivalent) in 2024. Its source EUI of 89.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,420,402 kWh of electricity, 11,796 therms of natural gas and 690 thousand gallons of water for the year.

Which law requires 1001 Connecticut Ave NW: 1001 Connecticut Avenue Northwest to report its energy use?

1001 Connecticut Ave NW: 1001 Connecticut Avenue Northwest 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:PM6182213:2024). 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.