Willoughby Hall

How does Willoughby Hall compare with other residence hall/dormitory buildings in New York City?

The latest disclosures cover 343 residence hall/dormitory buildings in New York City, out of 48,310 buildings citywide. Willoughby Hall's ENERGY STAR score of 74 compares with an average of 69 across the 177 that report a score; it scores higher than 47% of them and lower than 52%. Its site EUI of 73.6 kBtu/ft² is roughly in line with the average of 79.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 4.8 kgCO₂e/ft² is about 13% below the group average of 5.5 kgCO₂e/ft².

At 289,258 sq ft, it is about 238% above the average floor area of 85,583 sq ft for those buildings. It was built in 1965, 19 years later than the group's average year built (1947). Across all 24 jurisdictions BuildingCensus covers, the 702 residence hall/dormitory buildings average an ENERGY STAR score of 70 and a site EUI of 70.7 kBtu/ft².

How has Willoughby Hall's energy performance changed over time?

BuildingCensus holds 3 New York City disclosures for Willoughby Hall, covering report years 2022–2024. Its ENERGY STAR score went from 61 in 2022 to 74 in 2024 (+13 points). Site EUI moved from 95.1 kBtu/ft² (2022) to 73.6 kBtu/ft² (2024), a 23% decrease. Reported emissions went from 1,596 tCO₂e to 1,385 tCO₂e over the same span (down 13%).

What does an ENERGY STAR score of 74 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 74 means the building performs better than about 74% of its national peers. BuildingCensus bands the score into report-card grades; 74 falls in band B — above median (70–84). It sits 1 points below 75, the threshold for ENERGY STAR certification. In New York City, 43% 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. Willoughby Hall's 73.6 kBtu/ft² across 289,258 sq ft works out to about 21.3 billion Btu (6,239 MWh-equivalent) in 2024. Its source EUI of 102.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,201,586 kWh of electricity, 171,746 therms of natural gas and 13,010 thousand gallons of water for the year.

Which law requires Willoughby Hall to report its energy use?

Willoughby Hall reports under Local Law 84 (LL84), the legal basis of New York City's Energy and Water Data Disclosure program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record nyc:2690683:2024). Under Local Law 97, buildings over 25,000 sq ft face carbon caps with fines of $268 per metric ton of CO₂e over the limit, phasing in from 2024.