Machesney Park, Illinois, located in the Northern Temperate Zone, presents a mixed opportunity for solar energy generation throughout the year. The location's potential for solar power production varies significantly across seasons, with peak performance during the summer months.
Seasonal Solar Performance
Summer stands out as the most productive season for solar energy in Machesney Park, with an impressive daily output of 6.31 kWh per kW of installed solar capacity. This high yield is due to longer daylight hours and more direct sunlight. Spring follows as the second-best season, generating 5.22 kWh per day per kW installed. This season offers a good balance of sunlight and moderate temperatures, making it an efficient time for solar production. Autumn sees a notable decrease in solar output, with 3.37 kWh per day per kW installed. The shorter days and increased cloud cover contribute to this reduction. Winter presents the biggest challenge for solar energy production in Machesney Park, with only 2.30 kWh per day per kW installed. The combination of shorter days, lower sun angle, and potential snow cover significantly impacts solar panel efficiency during this season.Optimal Panel Installation
To maximize year-round solar energy production in Machesney Park, fixed solar panels should be installed at a tilt angle of 37 degrees facing south. This angle is calculated to capture the most sunlight throughout the year, considering the location's latitude and seasonal sun positions.Environmental Factors and Mitigation
Several environmental factors can impact solar production in Machesney Park: 1. Snow accumulation in winter can significantly reduce panel efficiency. Regular snow removal or the installation of panels at a steeper angle can help mitigate this issue. 2. Cloud cover, particularly in autumn and winter, can decrease solar output. Using high-efficiency panels and ensuring proper spacing can help maximize energy capture even in less-than-ideal conditions. 3. Potential shading from nearby trees or buildings should be considered during installation. Careful site assessment and strategic panel placement can minimize the impact of shading on overall system performance. By addressing these factors during the planning and installation phases, solar energy systems in Machesney Park can be optimized to deliver the best possible performance throughout the year, despite the seasonal variations in sunlight availability.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 Machesney Park
Seasonal solar PV output for Latitude: 42.3546, Longitude: -89.0435 (Machesney 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 37° South in Machesney Park, United States
To maximize your solar PV system's energy output in Machesney Park, United States (Lat/Long 42.3546, -89.0435) throughout the year, you should tilt your panels at an angle of 37° 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 Machesney 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 Machesney Park, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 37° 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 | 56° 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 Machesney 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 Machesney 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 Machesney Park, United States
Machesney Park, located in northern Illinois, is situated in a region characterized by gently rolling terrain typical of the Midwest United States. The topography around this area is predominantly flat to slightly undulating, with subtle changes in elevation across the landscape. The nearby Rock River valley adds some variety to the otherwise level terrain, creating shallow bluffs and minor depressions along its course. The area surrounding Machesney Park features a mix of open farmland, scattered woodlands, and suburban developments. The land gradually rises from the Rock River towards the east and west, but the overall change in elevation is modest. This relatively uniform topography is a result of glacial activity during the last ice age, which smoothed out much of the landscape and deposited rich soils across the region.
Potential for Large-Scale Solar PV
When considering areas nearby that would be most suited to large-scale solar PV installations, several factors come into play. The flat to gently sloping terrain in the vicinity of Machesney Park offers favorable conditions for solar farm development. Areas to the east and west of the town, where open agricultural land is more prevalent, present the most promising opportunities for such projects. These locations benefit from minimal shading issues due to the lack of significant topographical features or dense forests. The open fields provide ample space for the arrangement of solar panels without the need for extensive land clearing or grading. Additionally, the existing road network in the area facilitates easier access for construction and maintenance of solar installations. It's worth noting that while the topography is generally suitable, other factors such as local zoning regulations, proximity to electrical infrastructure, and environmental considerations would also need to be taken into account when determining the most appropriate sites for large-scale solar PV development in the region around Machesney Park.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: Wednesday 9th of April 2025
Last Updated: Sunday 27th 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
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.




