Wien House

How does Wien House 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. Wien House's ENERGY STAR score of 58 compares with an average of 63 across the 22,829 that report a score; it scores higher than 39% of them and lower than 60%. Its site EUI of 84.6 kBtu/ft² is about 13% above the average of 74.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 5.3 kgCO₂e/ft² is roughly in line with the group average of 5.2 kgCO₂e/ft².

At 74,870 sq ft, it is about 26% below the average floor area of 100,951 sq ft for those buildings. It was built in 1989, 37 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 Wien House's energy performance changed over time?

BuildingCensus holds 2 New York City disclosures for Wien House, covering report years 2022–2023. Its ENERGY STAR score went from 66 in 2022 to 58 in 2023 (-8 points); its best year on file was 2022, at 66. Site EUI moved from 84.0 kBtu/ft² (2022) to 84.6 kBtu/ft² (2023), an 1% increase. Reported emissions went from 372 tCO₂e to 400 tCO₂e over the same span (up 8%).

What does an ENERGY STAR score of 58 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 58 means the building performs better than about 58% of its national peers. BuildingCensus bands the score into report-card grades; 58 falls in band C — below median (55–69). It sits 17 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. Wien House's 84.6 kBtu/ft² across 74,870 sq ft works out to about 6.3 billion Btu (1,856 MWh-equivalent) in 2023. Its source EUI of 115.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 336,832 kWh of electricity, 51,844 therms of natural gas and 6,560 thousand gallons of water for the year.

Which law requires Wien House to report its energy use?

Wien House 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 2023 disclosure (source record nyc:20412835:2023). 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.