7 West 51st Street

How does 7 West 51st Street compare with other office buildings in New York City?

The latest disclosures cover 3,384 office buildings in New York City, out of 48,310 buildings citywide. 7 West 51st Street's ENERGY STAR score of 34 compares with an average of 72 across the 2,519 that report a score; it scores higher than 9% of them and lower than 90%. Its site EUI of 85.6 kBtu/ft² is about 33% above the average of 64.5 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 8.0 kgCO₂e/ft² is about 39% above the group average of 5.8 kgCO₂e/ft².

At 43,724 sq ft, it is about 79% below the average floor area of 205,440 sq ft for those buildings. It was built in 1964, 24 years later than the group's average year built (1940). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².

How has 7 West 51st Street's energy performance changed over time?

BuildingCensus holds 3 New York City disclosures for 7 West 51st Street, covering report years 2022–2024. Its ENERGY STAR score went from 12 in 2022 to 34 in 2024 (+22 points); its best year on file was 2023, at 54. Site EUI moved from 135.1 kBtu/ft² (2022) to 85.6 kBtu/ft² (2024), a 37% decrease. Reported emissions went from 398 tCO₂e to 352 tCO₂e over the same span (down 12%).

What does an ENERGY STAR score of 34 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 34 means the building performs better than about 34% of its national peers. BuildingCensus bands the score into report-card grades; 34 falls in band D — lowest band (1–54). It sits 41 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. 7 West 51st Street's 85.6 kBtu/ft² across 43,724 sq ft works out to about 3.7 billion Btu (1,097 MWh-equivalent) in 2024. Its source EUI of 180.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 621,550 kWh of electricity and 0 therms of natural gas for the year.

Which law requires 7 West 51st Street to report its energy use?

7 West 51st 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:23329797:2024). 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.