341 39th Street

How does 341 39th Street 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. 341 39th Street's ENERGY STAR score of 87 compares with an average of 64 across the 2,052 that report a score; it scores higher than 78% of them and lower than 20%. Its site EUI of 24.4 kBtu/ft² is about 60% below the average of 61.3 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 2.6 kgCO₂e/ft² is about half of the group average of 4.8 kgCO₂e/ft².

At 130,000 sq ft, it is about 28% above the average floor area of 101,338 sq ft for those buildings. It was built in 1926, 27 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 341 39th Street's energy performance changed over time?

BuildingCensus holds 2 New York City disclosures for 341 39th Street, covering report years 2023–2024. Its ENERGY STAR score went from 52 in 2023 to 87 in 2024 (+35 points). Site EUI moved from 39.9 kBtu/ft² (2023) to 24.4 kBtu/ft² (2024), a 39% decrease. Reported emissions went from 205 tCO₂e to 341 tCO₂e over the same span (up 66%).

What does an ENERGY STAR score of 87 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 87 means the building performs better than about 87% of its national peers. BuildingCensus bands the score into report-card grades; 87 falls in band A — high performer (85–100). 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. 341 39th Street's 24.4 kBtu/ft² across 130,000 sq ft works out to about 3.2 billion Btu (930 MWh-equivalent) in 2024. Its source EUI of 63.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 815,886 kWh of electricity and 3,881 therms of natural gas for the year.

Which law requires 341 39th Street to report its energy use?

341 39th Street 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:33987625:2024). 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.