Altamont - 1901 Wyoming Ave NW

How does Altamont - 1901 Wyoming Ave NW 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. Altamont - 1901 Wyoming Ave NW's ENERGY STAR score of 79 compares with an average of 72 across the 1,618 that report a score; it scores higher than 50% of them and lower than 49%. Its site EUI of 54.7 kBtu/ft² is roughly in line with the average of 51.1 kBtu/ft². Its emissions intensity of 3.4 kgCO₂e/ft² is about 10% below the group average of 3.8 kgCO₂e/ft².

At 71,791 sq ft, it is about half of the average floor area of 136,346 sq ft for those buildings. It was built in 1917, 48 years earlier 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.

How has Altamont - 1901 Wyoming Ave NW's energy performance changed over time?

BuildingCensus holds 12 Washington, DC disclosures for Altamont - 1901 Wyoming Ave NW, covering report years 2013–2024. Its ENERGY STAR score went from 49 in 2014 to 79 in 2024 (+30 points). Site EUI moved from 72.5 kBtu/ft² (2014) to 54.7 kBtu/ft² (2024), a 25% decrease. Reported emissions went from 373 tCO₂e to 245 tCO₂e over the same span (down 34%).

What does an ENERGY STAR score of 79 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 79 means the building performs better than about 79% of its national peers. BuildingCensus bands the score into report-card grades; 79 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. Altamont - 1901 Wyoming Ave NW's 54.7 kBtu/ft² across 71,791 sq ft works out to about 3.9 billion Btu (1,151 MWh-equivalent) in 2024. Its source EUI of 83.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 310,330 kWh of electricity, 28,703 therms of natural gas and 1,096 thousand gallons of water for the year.

Which law requires Altamont - 1901 Wyoming Ave NW to report its energy use?

Altamont - 1901 Wyoming Ave 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:PM3274455:2024). 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.