231 West 246th Street (Horace Mann)

How does 231 West 246th Street (Horace Mann) compare with other K-12 school buildings in New York City?

The latest disclosures cover 2,301 K-12 school buildings in New York City, out of 48,310 buildings citywide. 231 West 246th Street (Horace Mann)'s ENERGY STAR score of 28 compares with an average of 64 across the 2,052 that report a score; it scores higher than 13% of them and lower than 87%. Its site EUI of 88.8 kBtu/ft² is about 45% above the average of 61.3 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 7.5 kgCO₂e/ft² is about 56% above the group average of 4.8 kgCO₂e/ft².

At 369,548 sq ft, it is about 265% above the average floor area of 101,338 sq ft for those buildings. It was built in 1944, 9 years earlier than the group's average year built (1954). Across all 24 jurisdictions BuildingCensus covers, the 6,548 K-12 school buildings average an ENERGY STAR score of 64 and a site EUI of 52.7 kBtu/ft².

How has 231 West 246th Street (Horace Mann)'s energy performance changed over time?

BuildingCensus holds 3 New York City disclosures for 231 West 246th Street (Horace Mann), covering report years 2022–2024. Its ENERGY STAR score went from 33 in 2022 to 28 in 2024 (-5 points); its best year on file was 2022, at 33. Site EUI moved from 79.7 kBtu/ft² (2022) to 88.8 kBtu/ft² (2024), an 11% increase. Reported emissions went from 2,054 tCO₂e to 2,769 tCO₂e over the same span (up 35%).

What does an ENERGY STAR score of 28 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 28 means the building performs better than about 28% of its national peers. BuildingCensus bands the score into report-card grades; 28 falls in band D — lowest band (1–54). It sits 47 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. 231 West 246th Street (Horace Mann)'s 88.8 kBtu/ft² across 369,548 sq ft works out to about 32.8 billion Btu (9,617 MWh-equivalent) in 2024. Its source EUI of 171.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 4,854,631 kWh of electricity, 162,488 therms of natural gas and 3,892 thousand gallons of water for the year.

Which law requires 231 West 246th Street (Horace Mann) to report its energy use?

231 West 246th Street (Horace Mann) 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:4151629:2024). 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.