Mutual Redevelopment -Penn South - Building 1

How does Mutual Redevelopment -Penn South - Building 1 compare with other multifamily housing buildings in New York City?

The latest disclosures cover 33,022 multifamily housing buildings in New York City, out of 48,310 buildings citywide. Mutual Redevelopment -Penn South - Building 1's ENERGY STAR score of 96 compares with an average of 63 across the 22,829 that report a score; it scores higher than 84% of them and lower than 14%. Its site EUI of 36.7 kBtu/ft² is about half of the average of 74.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 3.0 kgCO₂e/ft² is about 43% below the group average of 5.2 kgCO₂e/ft².

At 203,335 sq ft, it is about twice the average floor area of 100,951 sq ft for those buildings. It was built in 1960, 8 years later than the group's average year built (1952). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².

How has Mutual Redevelopment -Penn South - Building 1's energy performance changed over time?

BuildingCensus holds 3 New York City disclosures for Mutual Redevelopment -Penn South - Building 1, covering report years 2022–2024. Its ENERGY STAR score was 96 in both 2022 and 2024. Site EUI moved from 37.9 kBtu/ft² (2022) to 36.7 kBtu/ft² (2024), a 3% decrease. Reported emissions went from 526 tCO₂e to 601 tCO₂e over the same span (up 14%).

What does an ENERGY STAR score of 96 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 96 means the building performs better than about 96% of its national peers. BuildingCensus bands the score into report-card grades; 96 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. Mutual Redevelopment -Penn South - Building 1's 36.7 kBtu/ft² across 203,335 sq ft works out to about 7.5 billion Btu (2,187 MWh-equivalent) in 2024. Its source EUI of 66.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 966,890 kWh of electricity and 41,582 therms of natural gas for the year.

Which law requires Mutual Redevelopment -Penn South - Building 1 to report its energy use?

Mutual Redevelopment -Penn South - Building 1 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:2649686:2024). 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.