(GIB) - Gibson Condominium (1140 23rd Street NW)

How does (GIB) - Gibson Condominium (1140 23rd Street NW) 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. (GIB) - Gibson Condominium (1140 23rd Street NW)'s ENERGY STAR score of 55 compares with an average of 72 across the 1,618 that report a score; it scores higher than 22% of them and lower than 76%. Its site EUI of 41.9 kBtu/ft² is about 18% 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 3.7 kgCO₂e/ft² is roughly in line with the group average of 3.8 kgCO₂e/ft².

At 89,622 sq ft, it is about 34% below the average floor area of 136,346 sq ft for those buildings. It was built in 1981, 16 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 (GIB) - Gibson Condominium (1140 23rd Street NW)'s energy performance changed over time?

BuildingCensus holds 7 Washington, DC disclosures for (GIB) - Gibson Condominium (1140 23rd Street NW), covering report years 2018–2024. Its ENERGY STAR score went from 38 in 2018 to 55 in 2024 (+17 points); its best year on file was 2022, at 56. Site EUI moved from 49.5 kBtu/ft² (2018) to 41.9 kBtu/ft² (2024), a 15% decrease. Reported emissions went from 424 tCO₂e to 330 tCO₂e over the same span (down 22%).

What does an ENERGY STAR score of 55 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 55 means the building performs better than about 55% of its national peers. BuildingCensus bands the score into report-card grades; 55 falls in band C — below median (55–69). It sits 20 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. (GIB) - Gibson Condominium (1140 23rd Street NW)'s 41.9 kBtu/ft² across 89,622 sq ft works out to about 3.8 billion Btu (1,101 MWh-equivalent) in 2024. Its source EUI of 117.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,101,318 kWh of electricity, 0 therms of natural gas and 1,983 thousand gallons of water for the year.

Which law requires (GIB) - Gibson Condominium (1140 23rd Street NW) to report its energy use?

(GIB) - Gibson Condominium (1140 23rd Street NW) 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:PM24239507:2024). 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.