Brookings Institution Annex - 1755 Mass Ave

How does Brookings Institution Annex - 1755 Mass Ave compare with other office buildings in Washington, DC?

The latest disclosures cover 899 office buildings in Washington, DC, out of 6,870 buildings citywide. Brookings Institution Annex - 1755 Mass Ave's ENERGY STAR score of 44 compares with an average of 70 across the 774 that report a score; it scores higher than 12% of them and lower than 88%. Its site EUI of 64.8 kBtu/ft² is about 17% above the average of 55.6 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 5.0 kgCO₂e/ft² is roughly in line with the group average of 5.0 kgCO₂e/ft².

At 66,966 sq ft, it is about 69% below the average floor area of 216,135 sq ft for those buildings. It was built in 1959, 15 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 Brookings Institution Annex - 1755 Mass Ave's energy performance changed over time?

BuildingCensus holds 13 Washington, DC disclosures for Brookings Institution Annex - 1755 Mass Ave, covering report years 2012–2024. Its ENERGY STAR score went from 50 in 2012 to 44 in 2024 (-6 points); its best year on file was 2020, at 71. Site EUI moved from 92.9 kBtu/ft² (2012) to 64.8 kBtu/ft² (2024), a 30% decrease. Reported emissions went from 741 tCO₂e to 338 tCO₂e over the same span (down 54%).

What does an ENERGY STAR score of 44 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 44 means the building performs better than about 44% of its national peers. BuildingCensus bands the score into report-card grades; 44 falls in band D — lowest band (1–54). It sits 31 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. Brookings Institution Annex - 1755 Mass Ave's 64.8 kBtu/ft² across 66,966 sq ft works out to about 4.3 billion Btu (1,272 MWh-equivalent) in 2024. Its source EUI of 151.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 941,563 kWh of electricity, 10,503 therms of natural gas and 665 thousand gallons of water for the year.

Which law requires Brookings Institution Annex - 1755 Mass Ave to report its energy use?

Brookings Institution Annex - 1755 Mass Ave 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:PM3512309:2024). 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.