Palos Park, Illinois, situated in the Northern Temperate Zone, offers varying conditions for solar PV energy generation throughout the year. This location experiences significant seasonal fluctuations in solar energy production, which is typical for areas in the northern United States.
Seasonal Solar Production
Solar panels in Palos Park generate their highest output during summer months, producing approximately 6.25kWh per day for each kilowatt installed. Spring follows as the second most productive season with 5.26kWh/day. Energy generation drops considerably during autumn to 3.32kWh/day, while winter sees the lowest production at just 1.99kWh/day per kilowatt of installed capacity.
This pattern creates a clear "high season" for solar production from late spring through early fall, with May through August likely being the peak months. The substantial difference between summer and winter production (more than three times higher in summer) highlights the seasonal nature of solar generation at this latitude.
Optimal Panel Installation
For fixed solar panel installations in Palos Park, the ideal tilt angle to maximize year-round energy production is 36 degrees facing South. This carefully calculated angle balances seasonal variations in the sun's position to capture the most energy across all seasons.
Environmental and Weather Considerations
Several factors in Palos Park may impact solar production:
- Snow accumulation during winter months can temporarily reduce output if panels become covered, requiring occasional clearing or the installation of panels at steeper angles to promote snow sliding
- The Chicago region experiences approximately 85 cloudy days annually, which temporarily reduces production
- Potential tree shading in this suburban area should be evaluated during site assessment
- Occasional hail storms in the region may pose a physical risk to panels
To mitigate these challenges, homeowners should consider high-efficiency panels with good low-light performance, ensure proper mounting systems that can withstand local wind conditions, and implement regular maintenance, especially snow removal in winter. Microinverters or power optimizers can help minimize production losses from partial shading.
Despite these seasonal variations, Palos Park receives sufficient solar radiation throughout the year to make solar PV systems viable, particularly when designed with the local conditions in mind.
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 Palos Park
Seasonal solar PV output for Latitude: 41.6673, Longitude: -87.8303 (Palos 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 Palos Park, United States
To maximize your solar PV system's energy output in Palos Park, United States (Lat/Long 41.6673, -87.8303) 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 Palos 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 Palos 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 |
|---|---|---|---|
| 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 Palos 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 Palos 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 Palos Park, United States
Palos Park, situated in Cook County, Illinois, is part of the Chicago metropolitan area. The topography of Palos Park and its surrounding region is characterized by gentle rolling hills and wooded areas, making it one of the more topographically diverse sections of the greater Chicago area. This area is part of what's known as the Valparaiso Moraine, a ridge of glacial deposits that formed during the Wisconsin Glaciation period approximately 14,000 years ago. The elevation in Palos Park varies, with hills reaching heights of about 100-150 feet above the surrounding terrain. The area features a mix of forested preserves, wetlands, and open spaces. The Palos Forest Preserve District, which encompasses much of the region, contains numerous ravines, small valleys, and waterways that contribute to the varied landscape.
Surrounding Water Features
Several small lakes and ponds dot the landscape around Palos Park, including Maple Lake, Saganashkee Slough, and Tampier Lake. The Cal-Sag Channel runs to the north of the area, providing a significant water boundary. These water features have influenced the topographical development of the region over time, creating natural drainage systems that have shaped the local terrain.Soil Composition
The soil in the Palos Park area is primarily composed of glacial till, a mixture of clay, sand, gravel, and boulders deposited by retreating glaciers. This composition varies throughout the region, with some areas having more clay-heavy soils while others feature sandier deposits. This variation in soil composition has implications for construction projects, including large-scale solar installations.Areas Suitable for Solar PV Development
When considering large-scale solar photovoltaic (PV) installations near Palos Park, several factors related to topography must be taken into account. The ideal areas would be: The relatively flat agricultural lands to the southwest of Palos Park, extending toward Lemont and Lockport, offer promising terrain for solar development. These areas provide the necessary space and suitable topography with minimal shading concerns. The land is generally level enough to minimize grading costs during installation. Former industrial sites and brownfields in the broader region, particularly to the east and northeast toward the more industrialized sections of Cook County, present opportunities for solar development. These areas often have the advantage of existing electrical infrastructure and minimal environmental conflicts. The open spaces along major transportation corridors, such as those adjacent to Interstate 355 and Interstate 80, could accommodate linear solar arrays. These areas typically feature cleared, relatively flat terrain with good access for construction and maintenance.Topographical Challenges
Despite these opportunities, certain topographical features around Palos Park present challenges for large-scale solar development. The wooded, hilly sections within the Palos Forest Preserves are generally unsuitable due to shading, slope considerations, and environmental protections. Additionally, the wetland areas throughout the region would require extensive mitigation measures if developed, making them less economically viable for solar installations. The urbanized sections immediately surrounding Palos Park proper have limited open space for large-scale installations, though smaller commercial or community solar projects might be feasible on available parcels.Geological Stability
The geological stability of the region is generally favorable for solar infrastructure. The glacial moraine provides a stable foundation with minimal risk of significant natural hazards such as earthquakes or landslides that might affect long-term solar operations. However, localized soil erosion can occur on steeper slopes, particularly after heavy rainfall events, which would need to be addressed through proper site engineering and stormwater management in any solar development plan.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!
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Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Thursday 29th of May 2025
Last Updated: Monday 21st of July 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
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