Flat Iron Building

1579 N. Milwaukee Avenue, Chicago IL, 60622 Find on Google Maps

Chicago Building ID: 156500

⚠️ Anomaly Detected - Likely Not Gas Free

This building did not report fossil gas use in the most recent year, but has used gas in the past, which may be a reporting error. Take a look at how this building has used energy over time under "Extra Technical & Historic Info".

🕰️ Out Of Date Data

This building did not report full data in 2023, so top-level stats are from 2021, the latest full year reported.

Building Info

Square Footage: 92,168 sqft
0.7x median
124,364 sqft
1/3 median Office
231,240 sqft
Built: 1913
Primary Property Type: Office
Community Area: West Town
Ward: 1
Chicago Energy Rating: 4.0 / 4
Energy Star Score: 64 / 100
Owner

Warning - Data Discrepancies Detected

We detected some issues with this building's data, so these grades may not be reflective of the building's true performance.

2021 Report Card

Overall Grade

Emissions Intensity - 50%

Energy Mix - 40%

Consistent Reporting - 10%

Learn About Our Grading

Emissions & Energy Information for 2021

Greenhouse Gas Intensity B: 5.7 kg CO₂e / sqft
0.9x median
6.2 kg CO₂e / sqft
0.9x median Office
6.6 kg CO₂e / sqft
Total Greenhouse Gas Emissions: 522.3 tons CO₂e
0.6x median
841.4 tons CO₂e
1/3 median Office
1,647.9 tons CO₂e

Years Reported 7/9
A

2015
2016
2017
2018
2019
2020
2021
2022
2023

Energy Breakdown for Flat Iron Building

Fossil Gas Use (aka Natural Gas): 4,652,030 kBtu
Est. Gas Bill: $55,000 for 2021**
0.8x median
5,517,828 kBtu
0.9x median Office
4,958,713.7 kBtu
Electricity Use: 1,926,657 kBtu
Est. Electric Bill: $81,000 for 2021**
0.5x median
3,580,332.6 kBtu
1/5 median Office
9,303,318.1 kBtu

Energy Mix C

Total Energy Use: 6,578,688 kBTU

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https://electrifychicago.net/building/156500

View Extra Technical & Historic Info

Source Energy Usage Intensity: Not Reported
This data was not reported for this building this year, which likely means a value of zero for this field.
Site Energy Usage Intensity: Not Reported
This data was not reported for this building this year, which likely means a value of zero for this field.

Full Historical Data Table for Flat Iron Building

Year	Overall Grade	Emissions Intensity Sub-Grade	Energy Mix Sub-Grade	Reporting Mix Sub-Grade	GHG Intensity kg CO₂e / sqft	GHG Emissions metric tons CO₂e	Energy Mix	Electricity Use kBTU	Fossil Gas Use kBTU	Source EUI kBTU / sqft	Floor Area sqft	Chicago Energy Rating	Energy Star Score
2015	C	A	F	A	6.7	472	11%Electricity 89%Fossil Gas 0%Other	753,666	6,027,665	123.2	70,575	-	84.0
2016	C	B	F	A	6.7	475.3	15%Electricity 85%Fossil Gas 0%Other	994,243	5,497,736	126	70,575	-	83.0
2017	C	B	D	A	6.7	619.6	22%Electricity 78%Fossil Gas 0%Other	1,652,985	5,910,718	123.7	92,168	-	85.0
2018	C	D	C	A	9.6	883.4	29%Electricity 71%Fossil Gas 0%Other	2,969,133	7,332,615	173.7	92,168	1.5	21.0
2019	C	D	B	A	9.5	872.1	33%Electricity 67%Fossil Gas 0%Other	3,155,186	6,536,752	170.3	92,168	1.5	34.0
2020	C	C	C	A	6.5	601.3	34%Electricity 66%Fossil Gas 0%Other	2,309,426	4,535,472	121.8	92,168	3.5	58.0
2021	B	B	C	A	5.7	522.3	29%Electricity 71%Fossil Gas 0%Other	1,926,658	4,652,030	111.5	92,168	4.0	64.0
2022						-		-	-		92,168	-	-
2023						-		-	-		-	0.0	-

* Note on Rankings: Rankings and medians are among included buildings, which are those who reported under the Chicago Energy Benchmarking Ordinance for the year 2023, which only applies to buildings over 50,000 square feet.

** Note on Bill Estimates: Estimates for gas and electric bills are based on average electric and gas retail prices for Chicago in 2021 and are rounded. We expect large buildings would negotiate lower rates with utilities, but these estimates serve as an upper bound of cost and help understand the volume of energy a building is used by comparing it to your own energy bills! See our Chicago Gas & Electric Costs Source for the original statistics.

Data Source: Chicago Energy Benchmarking Data

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