24 Rock Street

How does 24 Rock Street compare with other refrigerated warehouse buildings in New York City?

The latest disclosures cover 64 refrigerated warehouse buildings in New York City, out of 48,310 buildings citywide. 24 Rock Street's ENERGY STAR score of 10 compares with an average of 50 across the 51 that report a score; it scores higher than 8% of them and lower than 90%. Its site EUI of 104.9 kBtu/ft² is about 50% above the average of 69.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 10.4 kgCO₂e/ft² is about 55% above the group average of 6.7 kgCO₂e/ft².

At 136,758 sq ft, it is about 75% above the average floor area of 78,204 sq ft for those buildings. It was built in 1920, 43 years earlier than the group's average year built (1963). Across all 24 jurisdictions BuildingCensus covers, the 472 refrigerated warehouse buildings average an ENERGY STAR score of 52 and a site EUI of 76.3 kBtu/ft².

How has 24 Rock Street's energy performance changed over time?

BuildingCensus holds 3 New York City disclosures for 24 Rock Street, covering report years 2022–2024. Its ENERGY STAR score went from 6 in 2022 to 10 in 2024 (+4 points); its best year on file was 2023, at 10. Site EUI moved from 136.0 kBtu/ft² (2022) to 104.9 kBtu/ft² (2024), a 23% decrease. Reported emissions went from 1,362 tCO₂e to 1,421 tCO₂e over the same span (up 4%).

What does an ENERGY STAR score of 10 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 10 means the building performs better than about 10% of its national peers. BuildingCensus bands the score into report-card grades; 10 falls in band D — lowest band (1–54). It sits 65 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. 24 Rock Street's 104.9 kBtu/ft² across 136,758 sq ft works out to about 14.3 billion Btu (4,204 MWh-equivalent) in 2024. Its source EUI of 246.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 3,114,685 kWh of electricity and 37,172 therms of natural gas for the year.

Which law requires 24 Rock Street to report its energy use?

24 Rock 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:3523418:2024). 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.