At a glance
One North Wacker is a 1,614,398-square-foot office building at One North Wacker Drive in Chicago, Illinois, built in 2001. In its 2023 Chicago benchmarking disclosure it reported an ENERGY STAR score of 80 out of 100 (grade B), a site energy-use intensity of 65.7 kBtu/ft² and 11,863 tCO₂e of greenhouse-gas emissions. That score is higher than 68% of the 320 scored office buildings in Chicago.
Building Energy Use Benchmarking Ordinance · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 80 (band B) |
| Site EUI | 65.7 kBtu/ft² |
| Source EUI | 144.0 kBtu/ft² |
| GHG emissions | 11,863 tCO₂e |
| GHG intensity | 7.3 kgCO₂e/ft² |
| Electricity | 21,085,862 kWh |
| Water use | 7,173 kgal |
| Gross floor area | 1,614,398 sq ft |
| Source record | chicago:101744:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 80 | +1 | 65.7 kBtu/ft² | 11,863 tCO₂e |
| 2022 | 79 | -3 | 66.9 kBtu/ft² | 11,681 tCO₂e |
| 2021 | 82 | ±0 | 61.6 kBtu/ft² | 11,315 tCO₂e |
| 2020 | 82 | +6 | 63.2 kBtu/ft² | 12,683 tCO₂e |
| 2019 | 76 | +7 | 79.5 kBtu/ft² | — |
| 2018 | 69 | -15 | 83.9 kBtu/ft² | 17,735 tCO₂e |
| 2017 | 84 | +6 | 92.1 kBtu/ft² | 20,909 tCO₂e |
| 2016 | 78 | ±0 | 95.9 kBtu/ft² | 21,757 tCO₂e |
| 2015 | 78 | +1 | 92.1 kBtu/ft² | 23,285 tCO₂e |
| 2014 | 77 | 93.0 kBtu/ft² | 24,084 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
- One North Wacker Drive
- City
- Chicago
- State
- Illinois
- ZIP
- 60606
- Coordinates
- 41.93286, -87.64717
Within ~1 km
Nearby benchmarked buildings
- 900 North Michiganscore —
Mixed Use Property · 2,136,748 sq ft
- 111 South Wackerscore 72
Office · 1,248,730 sq ft
Multifamily Housing · 1,193,624 sq ft
- Altgeld Gardensscore 12
Multifamily Housing · 1,182,400 sq ft
- 500 West Monroescore 87
Office · 1,153,491 sq ft
- The Pavilionscore 73
Multifamily Housing · 1,072,297 sq ft
See also: most efficient in Chicago · biggest emitters
How does One North Wacker compare with other office buildings in Chicago?
The latest disclosures cover 387 office buildings in Chicago, out of 3,852 buildings citywide. One North Wacker's ENERGY STAR score of 80 compares with an average of 69 across the 320 that report a score; it scores higher than 68% of them and lower than 30%. Its site EUI of 65.7 kBtu/ft² is roughly in line with 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 7.3 kgCO₂e/ft² is roughly in line with the group average of 7.5 kgCO₂e/ft².
At 1,614,398 sq ft, it is about 231% above the average floor area of 488,124 sq ft for those buildings. It was built in 2001, 45 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 One North Wacker's energy performance changed over time?
BuildingCensus holds 10 Chicago disclosures for One North Wacker, covering report years 2014–2023. Its ENERGY STAR score went from 77 in 2014 to 80 in 2023 (+3 points); its best year on file was 2017, at 84. Site EUI moved from 93.0 kBtu/ft² (2014) to 65.7 kBtu/ft² (2023), a 29% decrease. Reported emissions went from 24,084 tCO₂e to 11,863 tCO₂e over the same span (down 51%).
What does an ENERGY STAR score of 80 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 80 means the building performs better than about 80% of its national peers. BuildingCensus bands the score into report-card grades; 80 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. One North Wacker's 65.7 kBtu/ft² across 1,614,398 sq ft works out to about 106.1 billion Btu (31,085 MWh-equivalent) in 2023. Its source EUI of 144.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 21,085,862 kWh of electricity and 7,173 thousand gallons of water for the year.
Which law requires One North Wacker to report its energy use?
One 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:101744:2023). 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
- 55 East Monroe Office· 1,609,901 sq ft · score 67 (C)
- 70 W Madison· 1,601,760 sq ft · score 73 (B)
- 141 West Jackson Boulevard (Chicago Board of Trade Building)· 1,567,753 sq ft · score 81 (B)
- 300 North LaSalle· 1,506,959 sq ft · score 71 (B)
- 150 North Riverside Plaza· 1,487,050 sq ft · score 68 (C)
- 311 S. Wacker· 1,433,821 sq ft · score 81 (B)
- 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 One North Wacker's energy grade?
One North Wacker scores 80 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 One North Wacker use?
Its 2023 site energy-use intensity was 65.7 kBtu/ft² (144.0 kBtu/ft² source) across 1,614,398 sq ft, including 21,085,862 kWh of electricity.
What are One North Wacker's carbon emissions?
One North Wacker reported 11,863 tCO₂e of greenhouse-gas emissions (7.3 kgCO₂e/ft²) for 2023.
Where is One North Wacker?
One North Wacker is at One North Wacker Drive, in Chicago, Illinois 60606. Its coordinates are 41.93286, -87.64717 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is One North Wacker and when was it built?
One North Wacker has 1,614,398 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 2001 as its year built. It is classed as office.
Is One 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, “One North Wacker, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/one-north-wacker-d0dc7cc8 (data as of October 2, 2026).