Mendota Apartments

How does Mendota Apartments 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. Mendota Apartments's ENERGY STAR score of 99 compares with an average of 72 across the 1,618 that report a score; it scores higher than 92% of them and lower than 5%. Its site EUI of 46.2 kBtu/ft² is roughly in line with 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 2.9 kgCO₂e/ft² is about 24% below the group average of 3.8 kgCO₂e/ft².

At 87,737 sq ft, it is about 36% below the average floor area of 136,346 sq ft for those buildings. It was built in 1908, 57 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 Mendota Apartments's energy performance changed over time?

BuildingCensus holds 5 Washington, DC disclosures for Mendota Apartments, covering report years 2014–2018. Its ENERGY STAR score went from 100 in 2014 to 99 in 2018 (-1 points); its best year on file was 2014, at 100. Site EUI moved from 44.0 kBtu/ft² (2014) to 46.2 kBtu/ft² (2018), an 5% increase. Reported emissions went from 216 tCO₂e to 250 tCO₂e over the same span (up 16%).

What does an ENERGY STAR score of 99 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 99 means the building performs better than about 99% of its national peers. BuildingCensus bands the score into report-card grades; 99 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. Mendota Apartments's 46.2 kBtu/ft² across 87,737 sq ft works out to about 4.1 billion Btu (1,188 MWh-equivalent) in 2018. Its source EUI of 63.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 211,640 kWh of electricity, 33,354 therms of natural gas and 1,263 thousand gallons of water for the year.

Which law requires Mendota Apartments to report its energy use?

Mendota Apartments 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 2018 disclosure (source record dc:PM4376538:2018). 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.