Prosser HS
K-12 School in Chicago, IL · 2148 N Long Ave · 60639
At a glance
Prosser HS is a 209,971-square-foot K-12 school at 2148 N Long Ave in Chicago, Illinois, built in 1918. In its 2023 Chicago benchmarking disclosure it reported an ENERGY STAR score of 7 out of 100 (grade D), a site energy-use intensity of 116.9 kBtu/ft² and 2,230 tCO₂e of greenhouse-gas emissions. That score is higher than 4% of the 365 scored K-12 school buildings in Chicago.
Building Energy Use Benchmarking Ordinance · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 7 (band D) |
| Site EUI | 116.9 kBtu/ft² |
| Source EUI | 211.7 kBtu/ft² |
| GHG emissions | 2,230 tCO₂e |
| GHG intensity | 10.6 kgCO₂e/ft² |
| Electricity | 3,125,435 kWh |
| Natural gas | 138,913 therms |
| Gross floor area | 209,971 sq ft |
| Source record | chicago:251362:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 7 | -2 | 116.9 kBtu/ft² | 2,230 tCO₂e |
| 2022 | 9 | +2 | 123.9 kBtu/ft² | 2,238 tCO₂e |
| 2021 | 7 | -3 | 124.8 kBtu/ft² | 2,390 tCO₂e |
| 2020 | 10 | 112.9 kBtu/ft² | 2,346 tCO₂e | |
| 2019 | — | — | — | |
| 2018 | 9 | +1 | 133.0 kBtu/ft² | 2,923 tCO₂e |
| 2017 | 8 | -2 | 110.7 kBtu/ft² | 2,850 tCO₂e |
| 2016 | 10 | -15 | 109.8 kBtu/ft² | 2,851 tCO₂e |
| 2015 | 25 | 97.0 kBtu/ft² | 2,356 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
- 2148 N Long Ave
- City
- Chicago
- State
- Illinois
- ZIP
- 60639
- Coordinates
- 41.91000, -87.72639
Within ~1 km
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See also: most efficient in Chicago · biggest emitters
How does Prosser HS compare with other K-12 school buildings in Chicago?
The latest disclosures cover 543 K-12 school buildings in Chicago, out of 3,852 buildings citywide. Prosser HS's ENERGY STAR score of 7 compares with an average of 45 across the 365 that report a score; it scores higher than 4% of them and lower than 94%. Its site EUI of 116.9 kBtu/ft² is about 61% above the average of 72.7 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 10.6 kgCO₂e/ft² is about 71% above the group average of 6.2 kgCO₂e/ft².
At 209,971 sq ft, it is about 72% above the average floor area of 121,824 sq ft for those buildings. It was built in 1918, 25 years earlier than the group's average year built (1943). Across all 24 jurisdictions BuildingCensus covers, the 6,548 K-12 school buildings average an ENERGY STAR score of 64 and a site EUI of 52.7 kBtu/ft².
How has Prosser HS's energy performance changed over time?
BuildingCensus holds 9 Chicago disclosures for Prosser HS, covering report years 2015–2023. Its ENERGY STAR score went from 25 in 2015 to 7 in 2023 (-18 points); its best year on file was 2015, at 25. Site EUI moved from 97.0 kBtu/ft² (2015) to 116.9 kBtu/ft² (2023), an 21% increase. Reported emissions went from 2,356 tCO₂e to 2,230 tCO₂e over the same span (down 5%).
What does an ENERGY STAR score of 7 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 7 means the building performs better than about 7% of its national peers. BuildingCensus bands the score into report-card grades; 7 falls in band D — lowest band (1–54). It sits 68 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. Prosser HS's 116.9 kBtu/ft² across 209,971 sq ft works out to about 24.5 billion Btu (7,194 MWh-equivalent) in 2023. Its source EUI of 211.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 3,125,435 kWh of electricity and 138,913 therms of natural gas for the year.
Which law requires Prosser HS to report its energy use?
Prosser HS 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:251362:2023). Covered buildings that fail to benchmark and report face fines of up to $100 plus $25 per day of violation under the ordinance.
More K-12 school buildings in Chicago
- SouthLoopBrn-CPS· 209,160 sq ft · score 100 (A)
- Goode HS· 208,200 sq ft · score 42 (D)
- Irving Park Middle -CPS· 207,520 sq ft · score 95 (A)
- 1450 N. Larabee· 207,325 sq ft
- North-Grand HS· 205,094 sq ft · score 19 (D)
- Acero Schools - Cruz - Rogers Park· 204,041 sq ft · score 68 (C)
- K-12 School buildings in Chicago· 543 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 Prosser HS's energy grade?
Prosser HS scores 7 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 Prosser HS use?
Its 2023 site energy-use intensity was 116.9 kBtu/ft² (211.7 kBtu/ft² source) across 209,971 sq ft, including 3,125,435 kWh of electricity and 138,913 therms of natural gas.
What are Prosser HS's carbon emissions?
Prosser HS reported 2,230 tCO₂e of greenhouse-gas emissions (10.6 kgCO₂e/ft²) for 2023.
Where is Prosser HS?
Prosser HS is at 2148 N Long Ave, in Chicago, Illinois 60639. Its coordinates are 41.91000, -87.72639 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is Prosser HS and when was it built?
Prosser HS has 209,971 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1918 as its year built. It is classed as K-12 school.
Is Prosser HS 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, “Prosser HS, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/prosser-hs-7397be89 (data as of October 2, 2026).