At a glance
Ambassador Hotel is a 188,600-square-foot hotel at 1301 N State Parkway in Chicago, Illinois, built in 1928. In its 2023 Chicago benchmarking disclosure it reported an ENERGY STAR score of 53 out of 100 (grade D), a site energy-use intensity of 92.6 kBtu/ft² and 1,708 tCO₂e of greenhouse-gas emissions. That score is higher than 48% of the 77 scored hotel buildings in Chicago.
Building Energy Use Benchmarking Ordinance · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 53 (band D) |
| Site EUI | 92.6 kBtu/ft² |
| Source EUI | 180.6 kBtu/ft² |
| GHG emissions | 1,708 tCO₂e |
| GHG intensity | 9.1 kgCO₂e/ft² |
| Electricity | 2,634,110 kWh |
| Natural gas | 84,788 therms |
| Gross floor area | 188,600 sq ft |
| Source record | chicago:173702:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 53 | 92.6 kBtu/ft² | 1,708 tCO₂e | |
| 2022 | — | 104.9 kBtu/ft² | 1,894 tCO₂e | |
| 2021 | 66 | -26 | 96.3 kBtu/ft² | 1,800 tCO₂e |
| 2020 | 92 | +55 | 70.2 kBtu/ft² | 1,354 tCO₂e |
| 2019 | 37 | +8 | 127.0 kBtu/ft² | — |
| 2018 | 29 | +5 | 141.7 kBtu/ft² | 2,785 tCO₂e |
| 2017 | 24 | -1 | 155.7 kBtu/ft² | 3,100 tCO₂e |
| 2016 | 25 | 154.6 kBtu/ft² | 3,126 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
- 1301 N State Parkway
- City
- Chicago
- State
- Illinois
- ZIP
- 60610
- Coordinates
- 41.88935, -87.62410
Within ~1 km
Nearby benchmarked buildings
- Chase Tower Chicagoscore —
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- 71215A State Stscore 45
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- 680 North Lake Shore Drivescore 87
Multifamily Housing · 1,647,872 sq ft
- 311 S. Wackerscore 81
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- The Field Museumscore —
Mixed Use Property · 1,280,537 sq ft
See also: most efficient in Chicago · biggest emitters
How does Ambassador Hotel compare with other hotel buildings in Chicago?
The latest disclosures cover 88 hotel buildings in Chicago, out of 3,852 buildings citywide. Ambassador Hotel's ENERGY STAR score of 53 compares with an average of 51 across the 77 that report a score; it scores higher than 48% of them and lower than 49%. Its site EUI of 92.6 kBtu/ft² is about 16% below the average of 110.1 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 9.1 kgCO₂e/ft² is roughly in line with the group average of 10.1 kgCO₂e/ft².
At 188,600 sq ft, it is about half of the average floor area of 343,808 sq ft for those buildings. It was built in 1928, 51 years earlier than the group's average year built (1979). Across all 24 jurisdictions BuildingCensus covers, the 3,812 hotel buildings average an ENERGY STAR score of 65 and a site EUI of 77.8 kBtu/ft².
How has Ambassador Hotel's energy performance changed over time?
BuildingCensus holds 8 Chicago disclosures for Ambassador Hotel, covering report years 2016–2023. Its ENERGY STAR score went from 25 in 2016 to 53 in 2023 (+28 points); its best year on file was 2020, at 92. Site EUI moved from 154.6 kBtu/ft² (2016) to 92.6 kBtu/ft² (2023), a 40% decrease. Reported emissions went from 3,126 tCO₂e to 1,708 tCO₂e over the same span (down 45%).
What does an ENERGY STAR score of 53 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 53 means the building performs better than about 53% of its national peers. BuildingCensus bands the score into report-card grades; 53 falls in band D — lowest band (1–54). It sits 22 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. Ambassador Hotel's 92.6 kBtu/ft² across 188,600 sq ft works out to about 17.5 billion Btu (5,118 MWh-equivalent) in 2023. Its source EUI of 180.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,634,110 kWh of electricity and 84,788 therms of natural gas for the year.
Which law requires Ambassador Hotel to report its energy use?
Ambassador Hotel 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:173702:2023). Covered buildings that fail to benchmark and report face fines of up to $100 plus $25 per day of violation under the ordinance.
More hotel buildings in Chicago
- Hotel Zachary· 184,703 sq ft · score 4 (D)
- Club Ouarters East Wacker Drive· 178,845 sq ft · score 49 (D)
- 1259 - Sonesta ES Suites Chicago Downtown 201 East Walton Place - SVC· 177,137 sq ft · score 64 (C)
- Hampton Inn & Suites Chicago - Downtown· 160,000 sq ft · score 42 (D)
- SpringHill Suites O'Hare· 160,000 sq ft · score 9 (D)
- The Hoxton· 153,000 sq ft · score 46 (D)
- Hotel buildings in Chicago· 88 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 Ambassador Hotel's energy grade?
Ambassador Hotel scores 53 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 Ambassador Hotel use?
Its 2023 site energy-use intensity was 92.6 kBtu/ft² (180.6 kBtu/ft² source) across 188,600 sq ft, including 2,634,110 kWh of electricity and 84,788 therms of natural gas.
What are Ambassador Hotel's carbon emissions?
Ambassador Hotel reported 1,708 tCO₂e of greenhouse-gas emissions (9.1 kgCO₂e/ft²) for 2023.
Where is Ambassador Hotel?
Ambassador Hotel is at 1301 N State Parkway, in Chicago, Illinois 60610. Its coordinates are 41.88935, -87.62410 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is Ambassador Hotel and when was it built?
Ambassador Hotel has 188,600 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1928 as its year built. It is classed as hotel.
Is Ambassador Hotel 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, “Ambassador Hotel, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/ambassador-hotel-73ba4a63 (data as of October 2, 2026).