Solar Energy Data for Chicago, United States
Solar Overview
Chicago receives an average of 2443 sun hours annually, providing a moderate opportunity for solar energy generation. The city's solar potential rating is classified as average, which reflects its favorable conditions for solar projects, particularly during peak sun months.
Geographic Impact
Situated at a latitude of 41.8781°, Chicago's temperate climate brings distinct seasons, influencing solar energy potential throughout the year. With an average annual temperature of 12.36°C, the city experiences varying weather conditions that should be considered in solar energy system design.
Rating Methodology
Chicago's average solar potential rating indicates that, while solar energy can be harnessed effectively, it may not be as optimal as in cities with higher ratings. This suggests reasonable prospects for solar energy generation, particularly with suitable system configurations.
Understanding the Data
The data shows that Chicago's peak sun months are June, July, and August, when sunlight availability is highest, significantly boosting potential solar production. Understanding these months can help optimize energy capture for solar installations.
Cost & Savings Outlook
At the typical electricity price of $0.180/kWh, investing in solar can offset a meaningful share of electricity costs, creating opportunities for savings on utility bills over time based on solar energy generated.
How It Compares
Chicago's solar potential rating is average, similar to Boston. However, in comparison to Philadelphia, which has a good rating, Chicago may offer slightly less favorable conditions for solar energy generation.
Installation Considerations
Given Chicago's latitude, a tilt angle of 30 degrees is generally recommended for solar installations to maximize sun exposure throughout the year. Care should also be taken to account for seasonal variations in output as well as potential snow accumulation during winter months.
Local Incentives
Check local and national incentive programs, which vary by country and region, to maximize financial support for solar energy installations in Chicago.
Compare Solar Potential in United States
Seasonal variations in sunlight availability are notable in Chicago, with winter months typically experiencing less sunlight than summer. This fluctuation can impact the efficiency of solar systems and should be considered when determining energy needs and system size.
As temperatures average 12.36°C, solar panels in Chicago may perform well, though efficiency can decline in extremely high temperatures. Careful planning regarding panel orientation and tilt can enhance energy capture.
Frequently Asked Questions
How many sun hours does Chicago get annually?
Chicago receives an average of 2443 sun hours each year.
What is Chicago's average temperature?
The average temperature in Chicago is approximately 12.36°C.
What are the peak months for solar energy production in Chicago?
The peak sun months in Chicago are June, July, and August, when sunlight availability is highest.
How does Chicago's solar potential compare to other cities?
Chicago has an average solar potential rating, similar to Boston, but lower than Philadelphia, which has a good rating.
What is the typical electricity price in Chicago?
The typical electricity price in Chicago is $0.180/kWh.
What tilt angle is recommended for solar panels in Chicago?
A tilt angle of approximately 30 degrees is generally recommended for solar installations in Chicago.
Solar Resource & Estimated Production
Irradiance data for Chicago hasn't been processed yet — check back soon.
Recommended Panel Orientation
Tilt angle: 42° from horizontal
Azimuth: 180° (true South)
Standard year-round heuristic based on latitude — a professional installer can optimize further for your roof.
Monthly Daylight Hours
Jan
9.3h
Feb
10.4h
Mar
11.7h
Apr
13.1h
May
14.4h
Jun
15h
Jul
14.8h
Aug
13.7h
Sep
12.3h
Oct
10.8h
Nov
9.6h
Dec
9h
Location Map
How Chicago Compares
| City | Sun Hours/Year | Irradiance (kWh/m²/day) | Rating |
|---|---|---|---|
| Chicago (this city) | 2,443 | N/A | — |
| Boston | 2,352 | N/A | Average |
| Philadelphia | 2,480 | N/A | Good |
| Denver | 2,969 | N/A | Good |
| Washington, D.C. | 2,403 | N/A | Good |
| Portland | 2,284 | N/A | Average |
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