Archer Senior

How does Archer Senior compare with other multifamily housing buildings in Chicago?

The latest disclosures cover 1,515 multifamily housing buildings in Chicago, out of 3,852 buildings citywide. Archer Senior's ENERGY STAR score of 56 compares with an average of 62 across the 1,472 that report a score; it scores higher than 37% of them and lower than 62%. Its site EUI of 66.3 kBtu/ft² is roughly in line with the average of 72.0 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 5.8 kgCO₂e/ft² is roughly in line with the group average of 5.8 kgCO₂e/ft².

At 53,245 sq ft, it is about 74% below the average floor area of 206,097 sq ft for those buildings. It was built in 2007, 36 years later 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 56 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 56 means the building performs better than about 56% of its national peers. BuildingCensus bands the score into report-card grades; 56 falls in band C — below median (55–69). It sits 19 points below 75, the threshold for ENERGY STAR certification. In Chicago, 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. Archer Senior's 66.3 kBtu/ft² across 53,245 sq ft works out to about 3.5 billion Btu (1,035 MWh-equivalent) in 2023. Its source EUI of 115.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 405,749 kWh of electricity, 21,441 therms of natural gas and 2,932 thousand gallons of water for the year.

Which law requires Archer Senior to report its energy use?

Archer Senior reports under the Building Energy Use Benchmarking Ordinance, the legal basis of the Chicago Energy Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2023 disclosure (source record chicago:257188:2023). Covered buildings that fail to benchmark and report face fines of up to $100 plus $25 per day of violation under the ordinance.