450 K

How does 450 K compare with other multifamily housing buildings in Washington, DC?

The latest disclosures cover 1,799 multifamily housing buildings in Washington, DC, out of 6,870 buildings citywide. 450 K's ENERGY STAR score of 35 compares with an average of 72 across the 1,618 that report a score; it scores higher than 10% of them and lower than 90%. Its site EUI of 60.9 kBtu/ft² is about 19% above the average of 51.1 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 5.7 kgCO₂e/ft² is about 50% above the group average of 3.8 kgCO₂e/ft².

At 223,804 sq ft, it is about 64% above the average floor area of 136,346 sq ft for those buildings. It was built in 2014, 49 years later than the group's average year built (1965). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².

What does an ENERGY STAR score of 35 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 35 means the building performs better than about 35% of its national peers. BuildingCensus bands the score into report-card grades; 35 falls in band D — lowest band (1–54). It sits 40 points below 75, the threshold for ENERGY STAR certification. 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. 450 K's 60.9 kBtu/ft² across 223,804 sq ft works out to about 13.6 billion Btu (3,994 MWh-equivalent) in 2017. Its source EUI of 153.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,793,081 kWh of electricity, 41,022 therms of natural gas and 5,655 thousand gallons of water for the year.

Which law requires 450 K to report its energy use?

450 K 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 2017 disclosure (source record dc:PM5813065:2017). 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.