University Park, Illinois, located in the Northern Temperate Zone, offers a variable environment for solar energy generation throughout the year. The expected electricity output shows significant seasonal fluctuations, with production ranging from robust summer yields to more modest winter returns.
The solar performance data reveals that a 1 kilowatt (kW) solar installation in University Park produces its highest output during summer months, generating approximately 6.25 kilowatt-hours (kWh) per day. Spring follows as the second most productive season with 5.26 kWh daily. Production decreases substantially in autumn to 3.32 kWh per day, and reaches its lowest point in winter with just 1.99 kWh daily output.
For residents considering solar installation, this seasonal pattern means that approximately 68% of annual energy production occurs during the spring and summer months combined. This makes the April through September period particularly valuable for solar energy harvesting in this location.
Optimal Panel Installation
For fixed solar panel installations in University Park, the ideal tilt angle to maximize year-round energy production is 36 degrees facing South. This specific angle has been calculated by analyzing daily solar elevation patterns at this latitude, weighted according to the solar potential throughout the year.
Environmental and Weather Considerations
Several environmental factors in University Park can affect solar production efficiency:
- Snow accumulation during winter months can temporarily reduce output by covering panels, contributing to the already lower winter production rates
- The region experiences approximately 38 inches of annual precipitation, with some as snow, requiring consideration during installation planning
- Seasonal tree shading may impact some installations, particularly as deciduous trees leaf out in spring
To mitigate these challenges, solar installations in University Park should incorporate several preventative measures. Panels can be installed with a slightly steeper angle than the optimal 36 degrees if winter production is particularly important, as this promotes snow shedding. Regular panel cleaning and maintenance schedules should account for seasonal debris, particularly following autumn leaf fall and winter storms.
Additionally, microinverters or power optimizers can help minimize production losses when partial shading occurs, ensuring that shaded panels don't reduce the output of the entire system.
Overall, while University Park isn't ideal for solar production year-round due to its significant seasonal variation, thoughtful system design can still yield satisfactory energy returns, particularly when optimized to capitalize on the highly productive spring and summer months.
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 University Park
Seasonal solar PV output for Latitude: 41.443, Longitude: -87.6836 (University Park, 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 University Park, United States
To maximize your solar PV system's energy output in University Park, United States (Lat/Long 41.443, -87.6836) 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 University Park, 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 University Park, 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 |
|---|---|---|---|
| 25° 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 University Park, 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 University Park, 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 University Park, United States
University Park, located in Illinois, United States, sits within a region characterized by relatively flat topography typical of the Midwest. The area around University Park features gently rolling terrain with minimal elevation changes, generally ranging between 700 and 750 feet above sea level. This location is part of the larger Chicago metropolitan area and sits on what geologists refer to as the Valparaiso Moraine, a ridge of glacial deposits that formed during the last ice age. The landscape surrounding University Park consists primarily of prairie lands that have been converted to suburban development, agricultural fields, and scattered woodlands. To the east, the terrain gradually slopes toward Lake Michigan, while to the west, the land remains predominantly flat with occasional shallow depressions and subtle rises. Several small creeks and drainage features cross the area, including Thorn Creek and its tributaries, which have carved minimal valleys into the otherwise level landscape.
Solar PV Potential in the Surrounding Region
Given the topographical characteristics of the University Park region, several nearby areas present favorable conditions for large-scale solar PV installations. The flat terrain minimizes construction challenges and reduces costs associated with land preparation. Additionally, the open character of the landscape means fewer natural obstructions that might cast shadows on solar arrays. The agricultural lands to the south and southwest of University Park offer particularly promising locations for solar development. These areas feature extensive open spaces with minimal tree cover and good access to existing infrastructure, including roads and transmission lines. Former industrial sites and brownfields in the broader southern Chicago metropolitan region could also be repurposed for solar installations, providing environmental remediation benefits alongside renewable energy generation. Areas along the Interstate 57 corridor, which runs near University Park, combine favorable topography with excellent access to transportation infrastructure, making them logistically attractive for solar development. The relatively flat terrain throughout Will County and southern Cook County presents few obstacles to solar construction while offering sufficient land area for commercial-scale projects. While the region experiences seasonal weather variations, including winter snow and occasional overcast conditions, the flat topography ensures consistent exposure to available sunlight across potential solar installation sites. This geographical uniformity is advantageous for predictable energy production throughout the year.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: Thursday 1st of May 2025
Last Updated: Monday 22nd of September 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.




