1213 Walnut Apartments

How does 1213 Walnut Apartments compare with other multifamily housing buildings in Philadelphia?

The latest disclosures cover 768 multifamily housing buildings in Philadelphia, out of 2,379 buildings citywide. 1213 Walnut Apartments's ENERGY STAR score of 37 compares with an average of 59 across the 682 that report a score; it scores higher than 29% of them and lower than 71%. Its site EUI of 67.1 kBtu/ft² is about 21% above the average of 55.6 kBtu/ft² — it uses more energy per square foot than the typical building in that group.

At 211,746 sq ft, it is about 69% above the average floor area of 125,469 sq ft for those buildings. It was built in 1900, 71 years earlier than the group's average year built (1971). 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.

What does an ENERGY STAR score of 37 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 37 means the building performs better than about 37% of its national peers. BuildingCensus bands the score into report-card grades; 37 falls in band D — lowest band (1–54). It sits 38 points below 75, the threshold for ENERGY STAR certification. In Philadelphia, 35% 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. 1213 Walnut Apartments's 67.1 kBtu/ft² across 211,746 sq ft works out to about 14.2 billion Btu (4,164 MWh-equivalent) in 2022. Its source EUI of 152.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,920,304 kWh of electricity, 42,430 therms of natural gas and 615 thousand gallons of water for the year.

Which law requires 1213 Walnut Apartments to report its energy use?

1213 Walnut Apartments reports under Phila. Code §9-3402 / Building Energy Performance Program, the legal basis of Philadelphia's Building Energy Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2022 disclosure (source record philadelphia:28484617:2022). Philadelphia requires commercial and multifamily buildings of 50,000+ sq ft to benchmark annually; its Building Energy Performance Program additionally requires non-residential buildings of 50,000+ sq ft to complete a tune-up or certify as high-performance every five years, with fines starting at $2,000 for non-compliance.