1201 Connecticut Novel Coworking LLC (Longfellow Building)

How does 1201 Connecticut Novel Coworking LLC (Longfellow Building) compare with other office buildings in Washington, DC?

The latest disclosures cover 899 office buildings in Washington, DC, out of 6,870 buildings citywide. 1201 Connecticut Novel Coworking LLC (Longfellow Building)'s ENERGY STAR score of 80 compares with an average of 70 across the 774 that report a score; it scores higher than 63% of them and lower than 34%. Its site EUI of 46.3 kBtu/ft² is about 17% below the average of 55.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 4.4 kgCO₂e/ft² is about 12% below the group average of 5.0 kgCO₂e/ft².

At 169,043 sq ft, it is about 22% below the average floor area of 216,135 sq ft for those buildings. It was built in 1941, 33 years earlier than the group's average year built (1974). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².

How has 1201 Connecticut Novel Coworking LLC (Longfellow Building)'s energy performance changed over time?

BuildingCensus holds 4 Washington, DC disclosures for 1201 Connecticut Novel Coworking LLC (Longfellow Building), covering report years 2016–2019. Its ENERGY STAR score went from 84 in 2016 to 80 in 2019 (-4 points); its best year on file was 2017, at 87. Site EUI moved from 47.8 kBtu/ft² (2016) to 46.3 kBtu/ft² (2019), a 3% decrease. Reported emissions went from 1,099 tCO₂e to 741 tCO₂e over the same span (down 33%).

What does an ENERGY STAR score of 80 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 80 means the building performs better than about 80% of its national peers. BuildingCensus bands the score into report-card grades; 80 falls in band B — above median (70–84). 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. 1201 Connecticut Novel Coworking LLC (Longfellow Building)'s 46.3 kBtu/ft² across 169,043 sq ft works out to about 7.8 billion Btu (2,294 MWh-equivalent) in 2019. Its source EUI of 127.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,232,031 kWh of electricity, 2,187 therms of natural gas and 20 thousand gallons of water for the year.

Which law requires 1201 Connecticut Novel Coworking LLC (Longfellow Building) to report its energy use?

1201 Connecticut Novel Coworking LLC (Longfellow Building) 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 2019 disclosure (source record dc:PM4989400:2019). 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.