At a glance
Technology Business Center is a 144,195-square-foot office building at 3440 S. Dearborn Street in Chicago, Illinois, built in 1964. In its 2023 Chicago benchmarking disclosure it reported an ENERGY STAR score of 6 out of 100 (grade D), a site energy-use intensity of 229.1 kBtu/ft² and 2,442 tCO₂e of greenhouse-gas emissions. That score is higher than 1% of the 320 scored office buildings in Chicago.
Building Energy Use Benchmarking Ordinance · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 6 (band D) |
| Site EUI | 229.1 kBtu/ft² |
| Source EUI | 313.5 kBtu/ft² |
| GHG emissions | 2,442 tCO₂e |
| GHG intensity | 16.9 kgCO₂e/ft² |
| Electricity | 1,724,848 kWh |
| Water use | 1,164 kgal |
| Gross floor area | 144,195 sq ft |
| Source record | chicago:172544:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 6 | +4 | 229.1 kBtu/ft² | 2,442 tCO₂e |
| 2022 | 2 | ±0 | 282.9 kBtu/ft² | 3,133 tCO₂e |
| 2021 | 2 | ±0 | 295.0 kBtu/ft² | 3,363 tCO₂e |
| 2020 | 2 | 293.0 kBtu/ft² | 3,522 tCO₂e | |
| 2019 | — | — | — | |
| 2018 | — | 311.9 kBtu/ft² | 3,804 tCO₂e | |
| 2017 | 2 | -1 | 311.3 kBtu/ft² | 4,055 tCO₂e |
| 2016 | 3 | 301.3 kBtu/ft² | 4,014 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
- 3440 S. Dearborn Street
- City
- Chicago
- State
- Illinois
- ZIP
- 60616
- Coordinates
- 41.80812, -87.69707
Within ~1 km
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See also: most efficient in Chicago · biggest emitters
How does Technology Business Center compare with other office buildings in Chicago?
The latest disclosures cover 387 office buildings in Chicago, out of 3,852 buildings citywide. Technology Business Center's ENERGY STAR score of 6 compares with an average of 69 across the 320 that report a score; it scores higher than 1% of them and lower than 99%. Its site EUI of 229.1 kBtu/ft² is about 225% above the average of 70.4 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 16.9 kgCO₂e/ft² is about 125% above the group average of 7.5 kgCO₂e/ft².
At 144,195 sq ft, it is about 70% below the average floor area of 488,124 sq ft for those buildings. It was built in 1964, 8 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 Technology Business Center's energy performance changed over time?
BuildingCensus holds 8 Chicago disclosures for Technology Business Center, covering report years 2016–2023. Its ENERGY STAR score went from 3 in 2016 to 6 in 2023 (+3 points). Site EUI moved from 301.3 kBtu/ft² (2016) to 229.1 kBtu/ft² (2023), a 24% decrease. Reported emissions went from 4,014 tCO₂e to 2,442 tCO₂e over the same span (down 39%).
What does an ENERGY STAR score of 6 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 6 means the building performs better than about 6% of its national peers. BuildingCensus bands the score into report-card grades; 6 falls in band D — lowest band (1–54). It sits 69 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. Technology Business Center's 229.1 kBtu/ft² across 144,195 sq ft works out to about 33 billion Btu (9,682 MWh-equivalent) in 2023. Its source EUI of 313.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,724,848 kWh of electricity and 1,164 thousand gallons of water for the year.
Which law requires Technology Business Center to report its energy use?
Technology Business Center 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:172544:2023). 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
- 105 W Madison· 140,000 sq ft · score 60 (C)
- 954 W Washington Blvd· 140,000 sq ft · score 98 (A)
- 29 N Wacker Dr· 137,554 sq ft · score 82 (B)
- 142 East Ontario· 137,050 sq ft · score 44 (D)
- 400 W. Superior· 130,007 sq ft · score 51 (D)
- CH10 - Chicago South· 129,029 sq ft · score 55 (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 Technology Business Center's energy grade?
Technology Business Center scores 6 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2023 Chicago disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Technology Business Center use?
Its 2023 site energy-use intensity was 229.1 kBtu/ft² (313.5 kBtu/ft² source) across 144,195 sq ft, including 1,724,848 kWh of electricity.
What are Technology Business Center's carbon emissions?
Technology Business Center reported 2,442 tCO₂e of greenhouse-gas emissions (16.9 kgCO₂e/ft²) for 2023.
Where is Technology Business Center?
Technology Business Center is at 3440 S. Dearborn Street, in Chicago, Illinois 60616. Its coordinates are 41.80812, -87.69707 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is Technology Business Center and when was it built?
Technology Business Center has 144,195 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1964 as its year built. It is classed as office.
Is Technology Business Center 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, “Technology Business Center, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/technology-business-center-5bd8cc4c (data as of October 2, 2026).