100 Grand Ave

How does 100 Grand Ave 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. 100 Grand Ave's ENERGY STAR score of 79 compares with an average of 69 across the 177 that report a score; it scores higher than 54% of them and lower than 44%. Its site EUI of 55.4 kBtu/ft² is about 30% below 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 4.0 kgCO₂e/ft² is about 27% below the group average of 5.5 kgCO₂e/ft².

At 27,053 sq ft, it is about 68% below the average floor area of 85,583 sq ft for those buildings. Its 1946 construction date is close to 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 100 Grand Ave's energy performance changed over time?

BuildingCensus holds 2 New York City disclosures for 100 Grand Ave, covering report years 2022–2023. Its ENERGY STAR score went from 89 in 2022 to 79 in 2023 (-10 points); its best year on file was 2022, at 89. Site EUI moved from 43.4 kBtu/ft² (2022) to 55.4 kBtu/ft² (2023), an 28% increase. Reported emissions went from 78 tCO₂e to 108 tCO₂e over the same span (up 38%).

What does an ENERGY STAR score of 79 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 79 means the building performs better than about 79% of its national peers. BuildingCensus bands the score into report-card grades; 79 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 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. 100 Grand Ave's 55.4 kBtu/ft² across 27,053 sq ft works out to about 1.5 billion Btu (439 MWh-equivalent) in 2023. Its source EUI of 90.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 148,053 kWh of electricity, 9,803 therms of natural gas and 940 thousand gallons of water for the year.

Which law requires 100 Grand Ave to report its energy use?

100 Grand Ave 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 2023 disclosure (source record nyc:6691789:2023). 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.