Libertyville, Illinois presents a moderately favorable location for solar energy generation, though it faces typical challenges common to the Midwest United States. The area experiences significant seasonal variation in solar production, with summer months delivering the strongest performance and winter months showing considerably reduced output.
Seasonal Solar Performance
The solar energy potential at this location varies dramatically throughout the year. Summer provides the peak generation period, producing 6.22 kWh per day for each kilowatt of installed solar capacity. Spring follows as the second-best season with 5.15 kWh per day per kW, making it another excellent time for solar energy production. Autumn shows a notable decline to 3.11 kWh per day per kW, while winter presents the most challenging conditions with only 1.76 kWh per day per kW. This represents more than a three-fold difference between peak summer and winter production levels. For optimal year-round energy capture, solar panels should be installed at a fixed tilt angle of 36 degrees facing south. This angle maximizes total annual production by accounting for the sun's changing position throughout the seasons and the varying solar irradiance levels at this latitude.Environmental and Weather Challenges
Several local factors can significantly impact solar energy production in Libertyville. The region experiences frequent cloud cover, particularly during autumn and winter months, which directly reduces solar irradiance reaching the panels. Snow accumulation during winter months can completely block solar panels, eliminating energy production until the snow melts or is removed. Ice formation presents another challenge, as it can create safety hazards for maintenance and may damage panels if not properly addressed. The area also experiences occasional severe weather events, including hailstorms and high winds, which can potentially damage solar installations.Preventative Measures for Enhanced Production
Several strategies can help maximize solar energy production despite these challenges:- Install panels with adequate spacing and proper drainage to prevent snow and ice buildup
- Use mounting systems designed to withstand high wind loads and severe weather conditions
- Consider panels with anti-reflective coatings and improved low-light performance
- Implement regular maintenance schedules for snow removal and system cleaning
- Install monitoring systems to quickly identify and address performance issues
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 Libertyville
Seasonal solar PV output for Latitude: 42.2853, Longitude: -87.9532 (Libertyville, 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 Libertyville, United States
To maximize your solar PV system's energy output in Libertyville, United States (Lat/Long 42.2853, -87.9532) 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 Libertyville, 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 Libertyville, 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 | 46° South in Autumn | 57° South in Winter | 35° 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 Libertyville, 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 Libertyville, 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 Libertyville, United States
Topographical Features Around Libertyville
Libertyville sits in the northern suburbs of Chicago, nestled within the gently rolling landscape characteristic of northeastern Illinois. The terrain around this area was shaped by glacial activity thousands of years ago, resulting in relatively modest elevation changes and a mixture of flat to gently undulating topography. The region features numerous small lakes, wetlands, and prairie remnants interspersed with developed areas and agricultural land.
The immediate vicinity of Libertyville includes several notable water bodies, including lakes and small rivers that create minor variations in the otherwise fairly level landscape. These water features, along with scattered woodlands and preserved natural areas, contribute to a topography that is generally favorable for development while maintaining pockets of natural beauty. The elevation changes throughout the area are gradual rather than dramatic, with most slopes being gentle enough to accommodate various types of infrastructure.
Moving outward from Libertyville, the surrounding Lake County region continues this pattern of modest topographical variation. The landscape includes a mix of suburban development, agricultural fields, forest preserves, and wetland areas. The terrain becomes slightly more varied as one moves toward the Wisconsin border to the north, while areas to the south and west maintain the characteristic flat to gently rolling prairie topography of the greater Chicago metropolitan region.
Optimal Areas for Large-Scale Solar Development
The most suitable locations for large-scale solar photovoltaic installations around Libertyville would be the expansive agricultural fields that stretch across much of the surrounding countryside. These areas offer several key advantages including relatively flat terrain that minimizes grading requirements, large contiguous parcels of land, and typically fewer obstacles such as trees or existing structures that could create shading issues.
Agricultural areas to the west and southwest of Libertyville present particularly promising opportunities for solar development. These regions feature extensive farmland with gentle slopes and good access to existing electrical infrastructure. The flat to slightly rolling terrain in these areas would require minimal site preparation while providing optimal conditions for solar panel installation and maintenance access.
Areas of former agricultural land that have transitioned to open space or are designated for future development also represent excellent candidates for solar installations. These locations often combine the topographical advantages of farmland with potentially fewer competing land use pressures. The gentle topography throughout much of the region means that most open areas could accommodate solar arrays with relatively straightforward engineering solutions.
Less suitable areas for large-scale solar development include the more heavily forested sections, particularly those designated as forest preserves or environmentally sensitive areas. Similarly, the immediate vicinity of lakes and wetlands would present both environmental and practical challenges for large solar installations. The more densely developed suburban areas, while topographically suitable, would face space constraints and higher land costs that make them less practical for utility-scale solar projects.
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 15th of July 2025
Last Updated: Wednesday 6th 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.




