845 W MADISON ST

How does 845 W MADISON ST 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. 845 W MADISON ST's ENERGY STAR score of 84 compares with an average of 62 across the 1,472 that report a score; it scores higher than 71% of them and lower than 27%. Its site EUI of 80.8 kBtu/ft² is about 12% above the average of 72.0 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 5.4 kgCO₂e/ft² is roughly in line with the group average of 5.8 kgCO₂e/ft².

At 558,155 sq ft, it is about 171% above the average floor area of 206,097 sq ft for those buildings. It was built in 2020, 49 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.

How has 845 W MADISON ST's energy performance changed over time?

BuildingCensus holds 3 Chicago disclosures for 845 W MADISON ST, covering report years 2020–2022. Its ENERGY STAR score went from 100 in 2021 to 84 in 2022 (-16 points); its best year on file was 2021, at 100. Site EUI moved from 42.9 kBtu/ft² (2021) to 80.8 kBtu/ft² (2022), an 88% increase. Reported emissions went from 1,744 tCO₂e to 2,692 tCO₂e over the same span (up 54%).

What does an ENERGY STAR score of 84 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 84 means the building performs better than about 84% of its national peers. BuildingCensus bands the score into report-card grades; 84 falls in band B — above median (70–84). 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 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. 845 W MADISON ST's 80.8 kBtu/ft² across 558,155 sq ft works out to about 45.1 billion Btu (13,217 MWh-equivalent) in 2022. Its source EUI of 108.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,993,946 kWh of electricity and 338,155 therms of natural gas for the year.

Which law requires 845 W MADISON ST to report its energy use?

845 W MADISON ST 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 2022 disclosure (source record chicago:256792:2022). Covered buildings that fail to benchmark and report face fines of up to $100 plus $25 per day of violation under the ordinance.