Mass Place Apartments: Mass Place

How does Mass Place Apartments: Mass Place 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. Mass Place Apartments: Mass Place's ENERGY STAR score of 84 compares with an average of 72 across the 1,618 that report a score; it scores higher than 57% of them and lower than 41%. Its site EUI of 58.6 kBtu/ft² is about 15% 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 3.9 kgCO₂e/ft² is roughly in line with the group average of 3.8 kgCO₂e/ft².

At 118,530 sq ft, it is about 13% below the average floor area of 136,346 sq ft for those buildings. Its 1965 construction date is close to 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 Mass Place Apartments: Mass Place's energy performance changed over time?

BuildingCensus holds 8 Washington, DC disclosures for Mass Place Apartments: Mass Place, covering report years 2017–2024. Its ENERGY STAR score went from 30 in 2017 to 84 in 2024 (+54 points); its best year on file was 2021, at 88. Site EUI moved from 99.4 kBtu/ft² (2017) to 58.6 kBtu/ft² (2024), a 41% decrease. Reported emissions went from 655 tCO₂e to 467 tCO₂e over the same span (down 29%).

What does an ENERGY STAR score of 84 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 84 means the building performs better than about 84% of its national peers. BuildingCensus bands the score into report-card grades; 84 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. Mass Place Apartments: Mass Place's 58.6 kBtu/ft² across 118,530 sq ft works out to about 6.9 billion Btu (2,036 MWh-equivalent) in 2024. Its source EUI of 103.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 831,884 kWh of electricity, 41,051 therms of natural gas and 8,210 thousand gallons of water for the year.

Which law requires Mass Place Apartments: Mass Place to report its energy use?

Mass Place Apartments: Mass Place 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:PM6257196:2024). 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.