At a glance
101 North Wacker is a 667,476-square-foot office building at 101 North Wacker Drive in Chicago, Illinois, built in 1980. In its 2023 Chicago benchmarking disclosure it reported an ENERGY STAR score of 73 out of 100 (grade B), a site energy-use intensity of 56.4 kBtu/ft² and 5,169 tCO₂e of greenhouse-gas emissions. That score is higher than 46% of the 320 scored office buildings in Chicago.
Building Energy Use Benchmarking Ordinance · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 73 (band B) |
| Site EUI | 56.4 kBtu/ft² |
| Source EUI | 154.9 kBtu/ft² |
| GHG emissions | 5,169 tCO₂e |
| GHG intensity | 7.7 kgCO₂e/ft² |
| Electricity | 10,694,049 kWh |
| Natural gas | 11,860 therms |
| Water use | 3,301 kgal |
| Gross floor area | 667,476 sq ft |
| Source record | chicago:101862:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 73 | -2 | 56.4 kBtu/ft² | 5,169 tCO₂e |
| 2022 | 75 | -2 | 60.4 kBtu/ft² | 5,181 tCO₂e |
| 2021 | 77 | +5 | 57.5 kBtu/ft² | 5,368 tCO₂e |
| 2020 | 72 | +1 | 65.9 kBtu/ft² | 6,738 tCO₂e |
| 2019 | 71 | +4 | 79.1 kBtu/ft² | 8,565 tCO₂e |
| 2018 | 67 | -16 | 78.4 kBtu/ft² | 8,419 tCO₂e |
| 2017 | 83 | +5 | 75.5 kBtu/ft² | 9,111 tCO₂e |
| 2016 | 78 | -5 | 77.9 kBtu/ft² | 9,441 tCO₂e |
| 2015 | 83 | +3 | 74.0 kBtu/ft² | 9,858 tCO₂e |
| 2014 | 80 | 79.0 kBtu/ft² | 10,555 tCO₂e |
Compliance context
Building Energy Use Benchmarking Ordinance
Covered buildings that fail to benchmark and report face fines of up to $100 plus $25 per day of violation under the ordinance.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 101 North Wacker Drive
- City
- Chicago
- State
- Illinois
- ZIP
- 60606
- Coordinates
- 42.01556, -87.66508
Within ~1 km
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How does 101 North Wacker compare with other office buildings in Chicago?
The latest disclosures cover 387 office buildings in Chicago, out of 3,852 buildings citywide. 101 North Wacker's ENERGY STAR score of 73 compares with an average of 69 across the 320 that report a score; it scores higher than 46% of them and lower than 50%. Its site EUI of 56.4 kBtu/ft² is about 20% below the average of 70.4 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 7.7 kgCO₂e/ft² is roughly in line with the group average of 7.5 kgCO₂e/ft².
At 667,476 sq ft, it is about 37% above the average floor area of 488,124 sq ft for those buildings. It was built in 1980, 24 years later than the group's average year built (1957). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has 101 North Wacker's energy performance changed over time?
BuildingCensus holds 10 Chicago disclosures for 101 North Wacker, covering report years 2014–2023. Its ENERGY STAR score went from 80 in 2014 to 73 in 2023 (-7 points); its best year on file was 2015, at 83. Site EUI moved from 79.0 kBtu/ft² (2014) to 56.4 kBtu/ft² (2023), a 29% decrease. Reported emissions went from 10,555 tCO₂e to 5,169 tCO₂e over the same span (down 51%).
What does an ENERGY STAR score of 73 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 73 means the building performs better than about 73% of its national peers. BuildingCensus bands the score into report-card grades; 73 falls in band B — above median (70–84). It sits 2 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. 101 North Wacker's 56.4 kBtu/ft² across 667,476 sq ft works out to about 37.6 billion Btu (11,033 MWh-equivalent) in 2023. Its source EUI of 154.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 10,694,049 kWh of electricity, 11,860 therms of natural gas and 3,301 thousand gallons of water for the year.
Which law requires 101 North Wacker to report its energy use?
101 North Wacker 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:101862:2023). Covered buildings that fail to benchmark and report face fines of up to $100 plus $25 per day of violation under the ordinance.
More office buildings in Chicago
- The Wrigley Building· 661,275 sq ft · score 76 (B)
- 110 NC LLC· 649,985 sq ft · score 87 (A)
- 625 W Adams St· 645,891 sq ft · score 94 (A)
- 125 South Wacker· 641,962 sq ft · score 66 (C)
- Cook County Building· 638,592 sq ft · score 61 (C)
- IL0054ZZ - CLARK FEDERAL BLDG· 635,978 sq ft · score 40 (D)
- Office buildings in Chicago· 387 benchmarked
- All Chicago benchmarked buildings· Building Energy Use Benchmarking Ordinance
- Most efficient large buildings in Chicago
- Least efficient large buildings in Chicago
- Biggest emitters in Chicago
Frequently asked questions
What is 101 North Wacker's energy grade?
101 North Wacker scores 73 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2023 Chicago disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 101 North Wacker use?
Its 2023 site energy-use intensity was 56.4 kBtu/ft² (154.9 kBtu/ft² source) across 667,476 sq ft, including 10,694,049 kWh of electricity and 11,860 therms of natural gas.
What are 101 North Wacker's carbon emissions?
101 North Wacker reported 5,169 tCO₂e of greenhouse-gas emissions (7.7 kgCO₂e/ft²) for 2023.
Where is 101 North Wacker?
101 North Wacker is at 101 North Wacker Drive, in Chicago, Illinois 60606. Its coordinates are 42.01556, -87.66508 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is 101 North Wacker and when was it built?
101 North Wacker has 667,476 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1980 as its year built. It is classed as office.
Is 101 North Wacker covered by the Building Energy Use Benchmarking Ordinance?
Yes — it appears in the 2023 Chicago Energy Benchmarking disclosure, which lists the buildings reporting under the Building Energy Use Benchmarking Ordinance.
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About this data
Source: Chicago Energy Benchmarking (Building Energy Use Benchmarking Ordinance), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “101 North Wacker, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/101-north-wacker-ef6a8649 (data as of October 2, 2026).