810 O Street NW (Perla Condominiums)

How does 810 O Street NW (Perla Condominiums) 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. 810 O Street NW (Perla Condominiums)'s ENERGY STAR score of 91 compares with an average of 72 across the 1,618 that report a score; it scores higher than 72% of them and lower than 26%. Its site EUI of 41.3 kBtu/ft² is about 19% below the average of 51.1 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 3.1 kgCO₂e/ft² is about 18% below the group average of 3.8 kgCO₂e/ft².

At 105,536 sq ft, it is about 23% below the average floor area of 136,346 sq ft for those buildings. It was built in 2020, 55 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.

How has 810 O Street NW (Perla Condominiums)'s energy performance changed over time?

BuildingCensus holds 2 Washington, DC disclosures for 810 O Street NW (Perla Condominiums), covering report years 2022–2023. Its ENERGY STAR score went from 97 in 2022 to 91 in 2023 (-6 points); its best year on file was 2022, at 97. Site EUI moved from 34.1 kBtu/ft² (2022) to 41.3 kBtu/ft² (2023), an 21% increase. Reported emissions went from 288 tCO₂e to 330 tCO₂e over the same span (up 14%).

What does an ENERGY STAR score of 91 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 91 means the building performs better than about 91% of its national peers. BuildingCensus bands the score into report-card grades; 91 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. 810 O Street NW (Perla Condominiums)'s 41.3 kBtu/ft² across 105,536 sq ft works out to about 4.4 billion Btu (1,277 MWh-equivalent) in 2023. Its source EUI of 90.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 835,046 kWh of electricity, 15,075 therms of natural gas and 1,912 thousand gallons of water for the year.

Which law requires 810 O Street NW (Perla Condominiums) to report its energy use?

810 O Street NW (Perla Condominiums) 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 2023 disclosure (source record dc:PM20418179:2023). 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.