Miramar Apartments

How does Miramar 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. Miramar Apartments's ENERGY STAR score of 89 compares with an average of 72 across the 1,618 that report a score; it scores higher than 68% of them and lower than 30%. Its site EUI of 68.9 kBtu/ft² is about 35% 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 4.3 kgCO₂e/ft² is about 12% above the group average of 3.8 kgCO₂e/ft².

At 120,213 sq ft, it is about 12% below the average floor area of 136,346 sq ft for those buildings. It was built in 1930, 35 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 Miramar Apartments's energy performance changed over time?

BuildingCensus holds 7 Washington, DC disclosures for Miramar Apartments, covering report years 2018–2024. Its ENERGY STAR score went from 76 in 2018 to 89 in 2024 (+13 points); its best year on file was 2021, at 90. Site EUI moved from 86.4 kBtu/ft² (2018) to 68.9 kBtu/ft² (2024), a 20% decrease. Reported emissions went from 650 tCO₂e to 513 tCO₂e over the same span (down 21%).

What does an ENERGY STAR score of 89 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 89 means the building performs better than about 89% of its national peers. BuildingCensus bands the score into report-card grades; 89 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. Miramar Apartments's 68.9 kBtu/ft² across 120,213 sq ft works out to about 8.3 billion Btu (2,427 MWh-equivalent) in 2024. Its source EUI of 103.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 616,177 kWh of electricity, 61,821 therms of natural gas and 6,818 thousand gallons of water for the year.

Which law requires Miramar Apartments to report its energy use?

Miramar 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 2024 disclosure (source record dc:PM14187305:2024). 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.