dca01000 1129 20th Street NW

How does dca01000 1129 20th 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. dca01000 1129 20th Street NW's ENERGY STAR score of 81 compares with an average of 70 across the 774 that report a score; it scores higher than 66% of them and lower than 30%. Its site EUI of 52.3 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 5.0 kgCO₂e/ft² is roughly in line with the group average of 5.0 kgCO₂e/ft².

At 182,220 sq ft, it is about 16% below the average floor area of 216,135 sq ft for those buildings. It was built in 1969, 5 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 dca01000 1129 20th Street NW's energy performance changed over time?

BuildingCensus holds 7 Washington, DC disclosures for dca01000 1129 20th Street NW, covering report years 2013–2019. Its ENERGY STAR score went from 84 in 2013 to 81 in 2019 (-3 points); its best year on file was 2016, at 88. Site EUI moved from 57.5 kBtu/ft² (2013) to 52.3 kBtu/ft² (2019), a 9% decrease. Reported emissions went from 1,325 tCO₂e to 909 tCO₂e over the same span (down 31%).

What does an ENERGY STAR score of 81 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 81 means the building performs better than about 81% of its national peers. BuildingCensus bands the score into report-card grades; 81 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. dca01000 1129 20th Street NW's 52.3 kBtu/ft² across 182,220 sq ft works out to about 9.5 billion Btu (2,793 MWh-equivalent) in 2019. Its source EUI of 145.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,771,250 kWh of electricity, 819 therms of natural gas and 2,396 thousand gallons of water for the year.

Which law requires dca01000 1129 20th Street NW to report its energy use?

dca01000 1129 20th 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 2019 disclosure (source record dc:PM1984865:2019). 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.