Homewood, Illinois presents a moderately favorable location for solar energy generation, though it faces typical challenges common to the Northern Temperate Zone climate. The seasonal variation in solar output is quite pronounced at this location.
Seasonal Solar Performance
Summer provides the strongest solar generation potential, producing 6.25 kWh per day for each kilowatt of installed solar capacity. This represents the peak production season when solar panels operate at their highest efficiency. Spring follows as the second-best season with 5.26 kWh per day per kilowatt, making it another excellent time for solar energy generation. Autumn sees a notable decline in production to 3.32 kWh per day per kilowatt as daylight hours decrease and the sun's angle becomes less favorable. Winter presents the most challenging conditions, dropping to just 2.01 kWh per day per kilowatt, representing roughly one-third of summer production levels.Optimal Panel Installation
For fixed solar panel installations at Homewood, the ideal tilt angle is 36 degrees facing south to maximize total year-round energy production. This angle is calculated to capture the most solar energy across all seasons by accounting for the sun's varying position throughout the year and weighting for optimal solar irradiance conditions.Environmental and Weather Challenges
Several local factors can significantly impact solar production in Homewood, Illinois:- Snow accumulation - Winter snowfall can cover panels completely, blocking all solar production until cleared
- Ice formation - Freezing conditions can create ice buildup that reduces panel efficiency
- Cloud cover - The region experiences frequent overcast conditions, particularly during autumn and winter months
- Atmospheric moisture - High humidity and precipitation can reduce solar irradiance reaching the panels
Preventative Installation Measures
To maximize energy production despite these challenges, several installation strategies prove effective:- Steeper tilt angles - While 36 degrees is optimal for year-round production, slightly steeper angles can help snow slide off more easily
- Quality mounting systems - Robust mounting that can handle snow loads and ice expansion prevents structural damage
- Anti-reflective coatings - Specialized panel coatings can improve performance during cloudy conditions
- Strategic placement - Positioning panels away from trees or structures that might hold snow and create additional shading
- Easy access design - Installing panels where they can be safely cleared of snow when necessary
Note: The Northern Temperate Zone extends from 35° latitude North up to 66.5° latitude.
So far, we have conducted calculations to evaluate the solar photovoltaic (PV) potential in 4253 locations across the United States. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in the United States by location
Solar output per kW of installed solar PV by season in Homewood
Seasonal solar PV output for Latitude: 41.5548, Longitude: -87.6593 (Homewood, United States), based on our analysis of 8760 hourly intervals of solar and meteorological data (one whole year) retrieved for that set of coordinates/location from NASA POWER (The Prediction of Worldwide Energy Resources) API:
 
Ideally tilt fixed solar panels 36° South in Homewood, United States
To maximize your solar PV system's energy output in Homewood, United States (Lat/Long 41.5548, -87.6593) throughout the year, you should tilt your panels at an angle of 36° South for fixed panel installations.
As the Earth revolves around the Sun each year, the maximum angle of elevation of the Sun varies by +/- 23.45 degrees from its equinox elevation angle for a particular latitude. Finding the exact optimal angle to maximise solar PV production throughout the year can be challenging, but with careful consideration of historical solar energy and meteorological data for a certain location, it can be done precisely.
We use our own calculation, which incorporates NASA solar and meteorological data for the exact Lat/Long coordinates, to determine the ideal tilt angle of a solar panel that will yield maximum annual solar output. We calculate the optimal angle for each day of the year, taking into account its contribution to the yearly total PV potential at that specific location.
Seasonally adjusted solar panel tilt angles for Homewood, United States
If you can adjust the tilt angle of your solar PV panels, please refer to the seasonal tilt angles below for optimal solar energy production in Homewood, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 36° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 26° South in Summer | 45° South in Autumn | 56° South in Winter | 34° South in Spring |
Our recommendations take into account more than just latitude and Earth's position in its elliptical orbit around the Sun. We also incorporate historical solar and meteorological data from NASA's Prediction of Worldwide Energy Resources (POWER) API to assign a weight to each ideal angle for each day based on its historical contribution to overall solar PV potential during a specific season.
This approach allows us to provide much more accurate recommendations than relying solely on latitude, as it considers unique weather conditions in different locations sharing the same latitude worldwide.
Calculate solar panel row spacing in Homewood, United States
We've added a feature to calculate minimum solar panel row spacing by location. Enter your panel size and orientation below to get the minimum spacing in Homewood, United States.
Our calculation method
- Solar Position:
We determine the Sun's position on the Winter solstice using the location's latitude and solar declination. - Shadow Projection:
We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle. - Minimum Spacing:
We add the shadow length to the horizontal space occupied by tilted panels.
This approach ensures maximum space efficiency while avoiding shading during critical times, as the Winter solstice represents the worst-case scenario for shadow length.
Topography for solar PV around Homewood, United States
Topography Around Homewood
Homewood sits in the relatively flat terrain characteristic of the greater Chicago metropolitan area, positioned approximately 25 miles south of downtown Chicago. The landscape here is part of the broader Great Lakes Plain, which was shaped by glacial activity thousands of years ago. This glacial influence created a gently rolling topography with minimal elevation changes, making the area generally conducive to development and infrastructure projects.
The elevation in and around Homewood typically ranges from about 650 to 750 feet above sea level, with most of the community sitting at approximately 700 feet. The terrain slopes very gradually toward the northeast, following the general drainage pattern toward Lake Michigan. Small creeks and drainage channels cut through the landscape, creating minor variations in the otherwise smooth topography.
The soil composition consists primarily of glacial till and outwash deposits, with areas of clay, silt, and sand. These soils are generally stable and well-suited for construction, though some areas may experience seasonal moisture variations. The flat to gently rolling nature of the land means that most locations receive relatively unobstructed exposure to sunlight throughout the day, with few natural barriers such as hills or ridges to create significant shading.
Optimal Areas for Large-Scale Solar Development
The agricultural and undeveloped lands stretching south and west of Homewood present the most promising opportunities for large-scale solar installations. These areas, extending into Will County and beyond, feature expansive flat fields with minimal tree cover and few obstructions. The agricultural parcels in this region are typically large enough to accommodate utility-scale solar arrays while maintaining adequate setbacks from residential areas.
The industrial corridors along major transportation routes, particularly near Interstate 57 and Interstate 80, offer additional potential for solar development. These areas often contain large, underutilized parcels with existing electrical infrastructure nearby, which can reduce interconnection costs. The flat terrain in these industrial zones requires minimal grading or site preparation, making development more economical.
Former agricultural lands that have transitioned to light industrial or commercial use also present opportunities, particularly those with large parking areas or warehouse facilities that could support rooftop or ground-mounted installations. The relatively open landscape means that even smaller installations can achieve good solar access without significant shading concerns from neighboring structures.
Areas to the east, closer to the Indiana border, maintain the same favorable flat topography while offering larger contiguous parcels that remain undeveloped. These locations benefit from the same glacial plain characteristics as Homewood itself, with stable soils and minimal grading requirements for solar installations.
United States solar PV Stats as a country
United States ranks 2nd in the world for cumulative solar PV capacity, with 95,209 total MW's of solar PV installed. This means that 3.40% of United States's total energy as a country comes from solar PV (that's 26th in the world). Each year United States is generating 289 Watts from solar PV per capita (United States ranks 15th in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in United States?
Yes, there are several incentives for businesses wanting to install solar energy in the United States. These include federal tax credits, state and local rebates, net metering policies, and renewable energy certificates (RECs). Additionally, many states have enacted legislation that requires utilities to purchase a certain amount of electricity from renewable sources such as solar.
Do you have more up to date information than this on incentives towards solar PV projects in United States? Please reach out to us and help us keep this information current. Thanks!
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Tuesday 22nd of July 2025
Last Updated: Thursday 7th of August 2025
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Compare this location to others worldwide for solar PV potential
The solar PV analyses available on our website, including this one, are offered as a free service to the global community. Our aim is to provide education and aid informed decision-making regarding solar PV installations.
However, please note that these analyses are general guidance and may not meet specific project requirements. For in-depth, tailored forecasts and analysis crucial for feasibility studies or when pursuing maximum ROI from your solar projects, feel free to contact us; we offer comprehensive consulting services expressly for this purpose.
Helping you assess viability of solar PV for your site
Calculate Your Optimal Solar Panel Tilt Angle: A Comprehensive Guide
Enhance your solar panel's performance with our in-depth guide. Determine the best tilt angle using hard data, debunk common misunderstandings, and gain insight into how your specific location affects solar energy production.




