Marshfield Lofts

How does Marshfield Lofts 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. Marshfield Lofts's ENERGY STAR score of 97 compares with an average of 62 across the 1,472 that report a score; it scores higher than 92% of them and lower than 7%. Its site EUI of 41.1 kBtu/ft² is about 43% below 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 3.0 kgCO₂e/ft² is about half of the group average of 5.8 kgCO₂e/ft².

At 70,916 sq ft, it is about 66% below the average floor area of 206,097 sq ft for those buildings. It was built in 1993, 22 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 Marshfield Lofts's energy performance changed over time?

BuildingCensus holds 8 Chicago disclosures for Marshfield Lofts, covering report years 2016–2023. Its ENERGY STAR score went from 99 in 2016 to 97 in 2023 (-2 points); its best year on file was 2016, at 99. Site EUI moved from 35.2 kBtu/ft² (2016) to 41.1 kBtu/ft² (2023), an 17% increase. Reported emissions went from 246 tCO₂e to 214 tCO₂e over the same span (down 13%).

What does an ENERGY STAR score of 97 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 97 means the building performs better than about 97% of its national peers. BuildingCensus bands the score into report-card grades; 97 falls in band A — high performer (85–100). 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. Marshfield Lofts's 41.1 kBtu/ft² across 70,916 sq ft works out to about 2.9 billion Btu (854 MWh-equivalent) in 2023. Its source EUI of 60.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 200,496 kWh of electricity and 22,308 therms of natural gas for the year.

Which law requires Marshfield Lofts to report its energy use?

Marshfield Lofts 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:172607:2023). Covered buildings that fail to benchmark and report face fines of up to $100 plus $25 per day of violation under the ordinance.