At a glance
MWRDGC Main Office Building is a 95,622-square-foot office building at 100 E Erie St in Chicago, Illinois, built in 1955. In its 2023 Chicago benchmarking disclosure it reported an ENERGY STAR score of 74 out of 100 (grade B), a site energy-use intensity of 67.6 kBtu/ft² and 662 tCO₂e of greenhouse-gas emissions. That score is higher than 50% of the 320 scored office buildings in Chicago.
Building Energy Use Benchmarking Ordinance · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 74 (band B) |
| Site EUI | 67.6 kBtu/ft² |
| Source EUI | 138.1 kBtu/ft² |
| GHG emissions | 662 tCO₂e |
| GHG intensity | 6.9 kgCO₂e/ft² |
| Electricity | 1,074,158 kWh |
| Natural gas | 28,030 therms |
| Water use | 831 kgal |
| Gross floor area | 95,622 sq ft |
| Source record | chicago:251276:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 74 | +2 | 67.6 kBtu/ft² | 662 tCO₂e |
| 2022 | 72 | -2 | 75.7 kBtu/ft² | 677 tCO₂e |
| 2021 | 74 | +8 | 66.6 kBtu/ft² | 683 tCO₂e |
| 2020 | 66 | +1 | 72.4 kBtu/ft² | 754 tCO₂e |
| 2019 | 65 | +13 | 77.0 kBtu/ft² | 900 tCO₂e |
| 2018 | 52 | -24 | 84.4 kBtu/ft² | 962 tCO₂e |
| 2017 | 76 | ±0 | 78.7 kBtu/ft² | 1,020 tCO₂e |
| 2016 | 76 | +3 | 102.1 kBtu/ft² | 1,372 tCO₂e |
| 2015 | 73 | 105.3 kBtu/ft² | 1,522 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
- 100 E Erie St
- City
- Chicago
- State
- Illinois
- ZIP
- 60611
- Coordinates
- 41.88187, -87.63107
Within ~1 km
Nearby benchmarked buildings
- theMART, Chicagoscore —
Office · 4,131,093 sq ft
- 10/30 South Wackerscore 72
Office · 3,014,304 sq ft
- Chase Tower Chicagoscore —
Financial Office · 2,521,929 sq ft
- AMA Plazascore 58
Office · 1,870,680 sq ft
- 71215A State Stscore 45
Retail Store · 1,841,736 sq ft
Multifamily Housing · 1,558,561 sq ft
See also: most efficient in Chicago · biggest emitters
How does MWRDGC Main Office Building compare with other office buildings in Chicago?
The latest disclosures cover 387 office buildings in Chicago, out of 3,852 buildings citywide. MWRDGC Main Office Building's ENERGY STAR score of 74 compares with an average of 69 across the 320 that report a score; it scores higher than 50% of them and lower than 49%. Its site EUI of 67.6 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 6.9 kgCO₂e/ft² is roughly in line with the group average of 7.5 kgCO₂e/ft².
At 95,622 sq ft, it is about 80% below the average floor area of 488,124 sq ft for those buildings. Its 1955 construction date is close to 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 MWRDGC Main Office Building's energy performance changed over time?
BuildingCensus holds 9 Chicago disclosures for MWRDGC Main Office Building, covering report years 2015–2023. Its ENERGY STAR score went from 73 in 2015 to 74 in 2023 (+1 points); its best year on file was 2016, at 76. Site EUI moved from 105.3 kBtu/ft² (2015) to 67.6 kBtu/ft² (2023), a 36% decrease. Reported emissions went from 1,522 tCO₂e to 662 tCO₂e over the same span (down 57%).
What does an ENERGY STAR score of 74 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 74 means the building performs better than about 74% of its national peers. BuildingCensus bands the score into report-card grades; 74 falls in band B — above median (70–84). It sits 1 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. MWRDGC Main Office Building's 67.6 kBtu/ft² across 95,622 sq ft works out to about 6.5 billion Btu (1,894 MWh-equivalent) in 2023. Its source EUI of 138.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,074,158 kWh of electricity, 28,030 therms of natural gas and 831 thousand gallons of water for the year.
Which law requires MWRDGC Main Office Building to report its energy use?
MWRDGC Main Office Building 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:251276:2023). 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
- Saint Vincent Center· 94,254 sq ft · score 62 (C)
- 311 W Superior Street· 94,000 sq ft · score 81 (B)
- Press Office Building· 93,852 sq ft · score 72 (B)
- O11970/2401 W GRACE ST/CHICAGO/IL· 93,089 sq ft · score 75 (B)
- 210-220 N Green St.· 92,741 sq ft · score 96 (A)
- 212 West Superior Street· 92,454 sq ft · score 88 (A)
- 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 MWRDGC Main Office Building's energy grade?
MWRDGC Main Office Building scores 74 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 MWRDGC Main Office Building use?
Its 2023 site energy-use intensity was 67.6 kBtu/ft² (138.1 kBtu/ft² source) across 95,622 sq ft, including 1,074,158 kWh of electricity and 28,030 therms of natural gas.
What are MWRDGC Main Office Building's carbon emissions?
MWRDGC Main Office Building reported 662 tCO₂e of greenhouse-gas emissions (6.9 kgCO₂e/ft²) for 2023.
Where is MWRDGC Main Office Building?
MWRDGC Main Office Building is at 100 E Erie St, in Chicago, Illinois 60611. Its coordinates are 41.88187, -87.63107 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is MWRDGC Main Office Building and when was it built?
MWRDGC Main Office Building has 95,622 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1955 as its year built. It is classed as office.
Is MWRDGC Main Office Building 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, “MWRDGC Main Office Building, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/mwrdgc-main-office-building-e773fa81 (data as of October 2, 2026).