1999 K Street NW

How does 1999 K 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. 1999 K Street NW'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 43.3 kBtu/ft² is about 22% 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 3.8 kgCO₂e/ft² is about 24% below the group average of 5.0 kgCO₂e/ft².

At 283,304 sq ft, it is about 31% above the average floor area of 216,135 sq ft for those buildings. It was built in 2009, 35 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 1999 K Street NW's energy performance changed over time?

BuildingCensus holds 13 Washington, DC disclosures for 1999 K Street NW, covering report years 2012–2024. Its ENERGY STAR score went from 74 in 2012 to 83 in 2024 (+9 points); its best year on file was 2020, at 88. Site EUI moved from 62.6 kBtu/ft² (2012) to 43.3 kBtu/ft² (2024), a 31% decrease. Reported emissions went from 2,253 tCO₂e to 1,077 tCO₂e over the same span (down 52%).

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. 1999 K Street NW's 43.3 kBtu/ft² across 283,304 sq ft works out to about 12.3 billion Btu (3,595 MWh-equivalent) in 2024. Its source EUI of 121.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 3,597,975 kWh of electricity, 0 therms of natural gas and 3,551 thousand gallons of water for the year.

Which law requires 1999 K Street NW to report its energy use?

1999 K 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:PM2590124:2024). 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.