Potowmac Overlook Condominium

How does Potowmac Overlook Condominium 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. Potowmac Overlook Condominium's ENERGY STAR score of 42 compares with an average of 72 across the 1,618 that report a score; it scores higher than 13% of them and lower than 86%. Its site EUI of 43.3 kBtu/ft² is about 15% 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 3.5 kgCO₂e/ft² is roughly in line with the group average of 3.8 kgCO₂e/ft².

At 60,319 sq ft, it is about 56% below the average floor area of 136,346 sq ft for those buildings. It was built in 1978, 13 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 Potowmac Overlook Condominium's energy performance changed over time?

BuildingCensus holds 6 Washington, DC disclosures for Potowmac Overlook Condominium, covering report years 2019–2024. Its ENERGY STAR score went from 32 in 2019 to 42 in 2024 (+10 points). Site EUI moved from 48.0 kBtu/ft² (2019) to 43.3 kBtu/ft² (2024), a 10% decrease. Reported emissions went from 269 tCO₂e to 208 tCO₂e over the same span (down 23%).

What does an ENERGY STAR score of 42 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 42 means the building performs better than about 42% of its national peers. BuildingCensus bands the score into report-card grades; 42 falls in band D — lowest band (1–54). It sits 33 points below 75, the threshold for ENERGY STAR certification. 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. Potowmac Overlook Condominium's 43.3 kBtu/ft² across 60,319 sq ft works out to about 2.6 billion Btu (765 MWh-equivalent) in 2024. Its source EUI of 121.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 765,560 kWh of electricity and 0 therms of natural gas for the year.

Which law requires Potowmac Overlook Condominium to report its energy use?

Potowmac Overlook Condominium 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:PM35055827:2024). 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.