Lamberton

How does Lamberton compare with other K-12 school buildings in Philadelphia?

The latest disclosures cover 295 K-12 school buildings in Philadelphia, out of 2,379 buildings citywide. Lamberton's ENERGY STAR score of 58 compares with an average of 42 across the 281 that report a score; it scores higher than 71% of them and lower than 28%. Its site EUI of 70.0 kBtu/ft² is roughly in line with the average of 70.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group.

Its 1949 construction date is close to the group's average year built (1950). Across all 24 jurisdictions BuildingCensus covers, the 6,548 K-12 school buildings average an ENERGY STAR score of 64 and a site EUI of 52.7 kBtu/ft².

How has Lamberton's energy performance changed over time?

BuildingCensus holds 6 Philadelphia disclosures for Lamberton, covering report years 2019–2024. Its ENERGY STAR score went from 97 in 2019 to 58 in 2024 (-39 points); its best year on file was 2019, at 97. Site EUI moved from 29.9 kBtu/ft² (2019) to 70.0 kBtu/ft² (2024), an 134% increase. Reported emissions went from 270 tCO₂e to 563 tCO₂e over the same span (up 108%).

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 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. Its source EUI of 98.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 495,006 kWh of electricity, 15,583 therms of natural gas and 3,703 thousand gallons of water for the year.

Which law requires Lamberton to report its energy use?

Lamberton 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 2024 disclosure (source record philadelphia:4385174:2024). 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.