The Connecticut House

How does The Connecticut House 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. The Connecticut House's ENERGY STAR score of 57 compares with an average of 72 across the 1,618 that report a score; it scores higher than 24% of them and lower than 75%. Its site EUI of 69.6 kBtu/ft² is about 36% 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 4.4 kgCO₂e/ft² is about 16% above the group average of 3.8 kgCO₂e/ft².

At 164,712 sq ft, it is about 21% above the average floor area of 136,346 sq ft for those buildings. It was built in 1958, 7 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 The Connecticut House's energy performance changed over time?

BuildingCensus holds 13 Washington, DC disclosures for The Connecticut House, covering report years 2012–2024. Its ENERGY STAR score went from 77 in 2013 to 57 in 2024 (-20 points); its best year on file was 2014, at 80. Site EUI moved from 50.9 kBtu/ft² (2012) to 69.6 kBtu/ft² (2024), an 37% increase. Reported emissions went from 795 tCO₂e to 725 tCO₂e over the same span (down 9%).

What does an ENERGY STAR score of 57 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 57 means the building performs better than about 57% of its national peers. BuildingCensus bands the score into report-card grades; 57 falls in band C — below median (55–69). It sits 18 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. The Connecticut House's 69.6 kBtu/ft² across 164,712 sq ft works out to about 11.5 billion Btu (3,360 MWh-equivalent) in 2024. Its source EUI of 108.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 987,087 kWh of electricity, 80,922 therms of natural gas and 5,535 thousand gallons of water for the year.

Which law requires The Connecticut House to report its energy use?

The Connecticut House 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:PM3372033:2024). 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.