At a glance
77 West Wacker Drive is a 1,185,113-square-foot office building at 77 W. Wacker Drive in Chicago, Illinois, built in 1992. In its 2023 Chicago benchmarking disclosure it reported an ENERGY STAR score of 81 out of 100 (grade B), a site energy-use intensity of 36.9 kBtu/ft² and 6,113 tCO₂e of greenhouse-gas emissions. That score is higher than 70% of the 320 scored office buildings in Chicago.
Building Energy Use Benchmarking Ordinance · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 81 (band B) |
| Site EUI | 36.9 kBtu/ft² |
| Source EUI | 103.2 kBtu/ft² |
| GHG emissions | 6,113 tCO₂e |
| GHG intensity | 5.2 kgCO₂e/ft² |
| Electricity | 12,804,994 kWh |
| Water use | 6,007 kgal |
| Gross floor area | 1,185,113 sq ft |
| Source record | chicago:101765:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 81 | +6 | 36.9 kBtu/ft² | 6,113 tCO₂e |
| 2022 | 75 | +10 | 42.9 kBtu/ft² | 6,691 tCO₂e |
| 2021 | 65 | -4 | 46.5 kBtu/ft² | 7,570 tCO₂e |
| 2020 | 69 | ±0 | 45.6 kBtu/ft² | 8,106 tCO₂e |
| 2019 | 69 | +7 | 56.8 kBtu/ft² | 10,778 tCO₂e |
| 2018 | 62 | -22 | 56.8 kBtu/ft² | 10,766 tCO₂e |
| 2017 | 84 | -1 | 54.2 kBtu/ft² | 11,430 tCO₂e |
| 2016 | 85 | +4 | 53.3 kBtu/ft² | 11,326 tCO₂e |
| 2015 | 81 | -2 | 55.7 kBtu/ft² | 12,900 tCO₂e |
| 2014 | 83 | 56.0 kBtu/ft² | 12,907 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
- 77 W. Wacker Drive
- City
- Chicago
- State
- Illinois
- ZIP
- 60601
- Coordinates
- 41.73165, -87.65793
Within ~1 km
Nearby benchmarked buildings
Multifamily Housing · 72,205 sq ft
- 640 644 N Wabash Avescore —
Residential · —
See also: most efficient in Chicago · biggest emitters
How does 77 West Wacker Drive compare with other office buildings in Chicago?
The latest disclosures cover 387 office buildings in Chicago, out of 3,852 buildings citywide. 77 West Wacker Drive's ENERGY STAR score of 81 compares with an average of 69 across the 320 that report a score; it scores higher than 70% of them and lower than 27%. Its site EUI of 36.9 kBtu/ft² is about half of 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 5.2 kgCO₂e/ft² is about 31% below the group average of 7.5 kgCO₂e/ft².
At 1,185,113 sq ft, it is about 143% above the average floor area of 488,124 sq ft for those buildings. It was built in 1992, 36 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 77 West Wacker Drive's energy performance changed over time?
BuildingCensus holds 10 Chicago disclosures for 77 West Wacker Drive, covering report years 2014–2023. Its ENERGY STAR score went from 83 in 2014 to 81 in 2023 (-2 points); its best year on file was 2016, at 85. Site EUI moved from 56.0 kBtu/ft² (2014) to 36.9 kBtu/ft² (2023), a 34% decrease. Reported emissions went from 12,907 tCO₂e to 6,113 tCO₂e over the same span (down 53%).
What does an ENERGY STAR score of 81 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 81 means the building performs better than about 81% of its national peers. BuildingCensus bands the score into report-card grades; 81 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. 77 West Wacker Drive's 36.9 kBtu/ft² across 1,185,113 sq ft works out to about 43.7 billion Btu (12,816 MWh-equivalent) in 2023. Its source EUI of 103.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 12,804,994 kWh of electricity and 6,007 thousand gallons of water for the year.
Which law requires 77 West Wacker Drive to report its energy use?
77 West Wacker Drive 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:101765:2023). 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
- 231 South LaSalle· 1,181,159 sq ft · score 89 (A)
- 500 West Monroe· 1,153,491 sq ft · score 87 (A)
- 111 East Wacker Drive· 1,111,058 sq ft · score 50 (D)
- 30 North LaSalle Street· 1,095,104 sq ft · score 82 (B)
- One North Dearborn· 1,088,373 sq ft · score 86 (A)
- 33 West Monroe· 1,085,869 sq ft · score 61 (C)
- 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 77 West Wacker Drive's energy grade?
77 West Wacker Drive scores 81 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 77 West Wacker Drive use?
Its 2023 site energy-use intensity was 36.9 kBtu/ft² (103.2 kBtu/ft² source) across 1,185,113 sq ft, including 12,804,994 kWh of electricity.
What are 77 West Wacker Drive's carbon emissions?
77 West Wacker Drive reported 6,113 tCO₂e of greenhouse-gas emissions (5.2 kgCO₂e/ft²) for 2023.
Where is 77 West Wacker Drive?
77 West Wacker Drive is at 77 W. Wacker Drive, in Chicago, Illinois 60601. Its coordinates are 41.73165, -87.65793 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is 77 West Wacker Drive and when was it built?
77 West Wacker Drive has 1,185,113 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1992 as its year built. It is classed as office.
Is 77 West Wacker Drive 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, “77 West Wacker Drive, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/77-west-wacker-drive-ef20c896 (data as of October 2, 2026).