At a glance
U.S. Cellular Plaza - 8430 _ Goby LLC is a 343,459-square-foot office building at 8430 West Bryn Mawr Avenue in Chicago, Illinois, built in 1981. In its 2023 Chicago benchmarking disclosure it reported a site energy-use intensity of 7.1 kBtu/ft² and 343 tCO₂e of greenhouse-gas emissions.
Building Energy Use Benchmarking Ordinance · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 7.1 kBtu/ft² |
| Source EUI | 20.0 kBtu/ft² |
| GHG emissions | 343 tCO₂e |
| GHG intensity | 1.0 kgCO₂e/ft² |
| Electricity | 718,130 kWh |
| Gross floor area | 343,459 sq ft |
| Source record | chicago:160142:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | — | 7.1 kBtu/ft² | 343 tCO₂e | |
| 2022 | 96 | +1 | 21.2 kBtu/ft² | 558 tCO₂e |
| 2021 | 95 | ±0 | 21.4 kBtu/ft² | 612 tCO₂e |
| 2020 | 95 | +16 | 23.1 kBtu/ft² | 723 tCO₂e |
| 2019 | 79 | +18 | 49.4 kBtu/ft² | 1,643 tCO₂e |
| 2018 | 61 | -9 | 61.9 kBtu/ft² | 2,062 tCO₂e |
| 2017 | 70 | +6 | 76.1 kBtu/ft² | 2,818 tCO₂e |
| 2016 | 64 | -2 | 78.7 kBtu/ft² | 2,904 tCO₂e |
| 2015 | 66 | 76.7 kBtu/ft² | 3,086 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 8430 West Bryn Mawr Avenue
- City
- Chicago
- State
- Illinois
- ZIP
- 60631
- Coordinates
- 41.83228, -87.61119
Within ~1 km
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See also: most efficient in Chicago · biggest emitters
How does U.S. Cellular Plaza - 8430 _ Goby LLC compare with other office buildings in Chicago?
The latest disclosures cover 387 office buildings in Chicago, out of 3,852 buildings citywide. Its site EUI of 7.1 kBtu/ft² is about 90% 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 1.0 kgCO₂e/ft² is about 87% below the group average of 7.5 kgCO₂e/ft².
At 343,459 sq ft, it is about 30% below the average floor area of 488,124 sq ft for those buildings. It was built in 1981, 25 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 U.S. Cellular Plaza - 8430 _ Goby LLC's energy performance changed over time?
BuildingCensus holds 9 Chicago disclosures for U.S. Cellular Plaza - 8430 _ Goby LLC, covering report years 2015–2023. Its ENERGY STAR score went from 66 in 2015 to 96 in 2022 (+30 points). Site EUI moved from 76.7 kBtu/ft² (2015) to 7.1 kBtu/ft² (2023), a 91% decrease. Reported emissions went from 3,086 tCO₂e to 343 tCO₂e over the same span (down 89%).
What does a site EUI of 7.1 kBtu/ft² mean?
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. U.S. Cellular Plaza - 8430 _ Goby LLC's 7.1 kBtu/ft² across 343,459 sq ft works out to about 2.4 billion Btu (715 MWh-equivalent) in 2023. Its source EUI of 20.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 718,130 kWh of electricity for the year.
Which law requires U.S. Cellular Plaza - 8430 _ Goby LLC to report its energy use?
U.S. Cellular Plaza - 8430 _ Goby LLC 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:160142:2023). 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 Rookery Building· 337,879 sq ft · score 84 (B)
- Reid Murdoch Center· 335,281 sq ft · score 38 (D)
- Onni Van Buren Chicago LLC· 332,608 sq ft · score 84 (B)
- 205 W Wacker· 324,762 sq ft · score 58 (C)
- Realtor Building· 324,698 sq ft · score 78 (B)
- TransUnion LLC· 312,000 sq ft · EUI 29.2 kBtu/ft²
- 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 U.S. Cellular Plaza - 8430 _ Goby LLC's energy grade?
U.S. Cellular Plaza - 8430 _ Goby LLC did not report an ENERGY STAR score in its 2023 disclosure, but its site energy-use intensity was 7.1 kBtu/ft².
How much energy does U.S. Cellular Plaza - 8430 _ Goby LLC use?
Its 2023 site energy-use intensity was 7.1 kBtu/ft² (20.0 kBtu/ft² source) across 343,459 sq ft, including 718,130 kWh of electricity.
What are U.S. Cellular Plaza - 8430 _ Goby LLC's carbon emissions?
U.S. Cellular Plaza - 8430 _ Goby LLC reported 343 tCO₂e of greenhouse-gas emissions (1.0 kgCO₂e/ft²) for 2023.
Where is U.S. Cellular Plaza - 8430 _ Goby LLC?
U.S. Cellular Plaza - 8430 _ Goby LLC is at 8430 West Bryn Mawr Avenue, in Chicago, Illinois 60631. Its coordinates are 41.83228, -87.61119 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is U.S. Cellular Plaza - 8430 _ Goby LLC and when was it built?
U.S. Cellular Plaza - 8430 _ Goby LLC has 343,459 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1981 as its year built. It is classed as office.
Is U.S. Cellular Plaza - 8430 _ Goby LLC 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, “U.S. Cellular Plaza - 8430 _ Goby LLC, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/u-s-cellular-plaza-8430-goby-llc-6f2b196d (data as of October 2, 2026).