Dixon, Illinois, located in the Northern Temperate Zone, presents a moderately favorable location for year-round solar photovoltaic energy generation, though with significant seasonal variations that potential solar installers should carefully consider.

Seasonal Solar Production Patterns

The solar energy output at this location shows typical patterns for the northern United States. Summer production reaches its peak at 6.33 kWh per day per kW of installed capacity, making it the most productive season for solar generation. Spring follows as the second-best season with 5.24 kWh per day per kW, offering strong production as daylight hours increase and temperatures remain moderate. Autumn production drops to 3.46 kWh per day per kW as daylight hours decrease and weather patterns become less favorable. Winter presents the most challenging conditions with only 2.52 kWh per day per kW, representing less than 40% of summer production levels.

Optimal Installation Configuration

For fixed panel installations at Dixon, Illinois, the ideal tilt angle is 37 degrees facing south to maximize total year-round solar production. This angle is calculated based on the location's latitude and weighted solar irradiance data throughout the year, accounting for Earth's elliptical orbit and seasonal sun angle variations.

Local Environmental and Weather Challenges

Several factors specific to Dixon's location and climate can significantly impact solar energy production:

• Snow accumulation: Illinois winters typically bring substantial snowfall that can completely block solar panels, eliminating production until cleared
• Ice formation: Freezing rain and ice storms can coat panels and reduce efficiency even after the weather clears
• Agricultural dust: Being in a farming region, seasonal dust from agricultural activities can accumulate on panels and reduce output
• Severe weather: The area experiences thunderstorms, high winds, and occasional tornadoes that can damage installations

Preventative Measures for Enhanced Production

To combat these challenges and maintain optimal energy production, several installation strategies prove effective: Installing panels at the recommended 37-degree tilt helps snow slide off naturally rather than accumulating. Choosing mounting systems with adequate clearance from the roof allows air circulation and easier snow removal access. Regular cleaning schedules, particularly during spring and fall agricultural seasons, help maintain panel efficiency. Anti-reflective coatings can reduce dust adhesion and make cleaning more effective. Proper electrical grounding and surge protection systems protect against lightning damage common in this region. Selecting panels and mounting hardware rated for high wind loads ensures system durability during severe weather events. Investing in monitoring systems allows quick identification of production drops due to soiling or weather damage, enabling prompt maintenance responses to restore full capacity.

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 Dixon, Illinois

Seasonal solar PV output for Latitude: 41.8446, Longitude: -89.4889 (Dixon, Illinois, 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 Dixon, Illinois, United States

To maximize your solar PV system's energy output in Dixon, Illinois, United States (Lat/Long 41.8446, -89.4889) 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 Dixon, Illinois, 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 Dixon, Illinois, 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 Dixon, Illinois, 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 Dixon, Illinois, United States.

Our calculation method

1. Solar Position:
   We determine the Sun's position on the Winter solstice using the location's latitude and solar declination.
2. Shadow Projection:
   We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle.
3. 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 Dixon, Illinois, United States

Topographical Features Around Dixon

Dixon, Illinois sits within the gently rolling landscape of north-central Illinois, characterized by relatively flat to mildly undulating terrain that was shaped by ancient glacial activity. The area lies within the Till Plains region, where glacial deposits created a predominantly level topography with subtle elevation changes. The Rock River flows through Dixon from northeast to southwest, creating a modest river valley that adds some variation to the otherwise uniform landscape.

The elevation around Dixon typically ranges from approximately 650 to 750 feet above sea level, with the highest points found on the glacial moraines and the lowest elevations along the Rock River corridor. The terrain consists mainly of fertile prairie soils deposited during the last ice age, creating expansive flat areas interrupted by gentle hills and shallow valleys. Agricultural fields dominate the landscape, stretching across vast open spaces with minimal tree coverage except along waterways and property boundaries.

Optimal Areas for Large-Scale Solar Development

The extensive flat agricultural lands surrounding Dixon present excellent opportunities for large-scale solar photovoltaic installations. The areas south and west of the city offer particularly suitable conditions, with large unobstructed fields that provide minimal topographical challenges for solar array construction. These locations benefit from the naturally level terrain that requires little to no grading for installation.

The gently sloping areas on the higher elevations north and east of Dixon also present favorable conditions for solar development. These slightly elevated locations avoid potential flooding concerns associated with the Rock River floodplain while maintaining the gentle gradients that work well for solar panel positioning. The agricultural nature of these lands means they typically lack significant tree coverage that would create shading issues.

Areas immediately adjacent to existing electrical infrastructure corridors would be particularly advantageous for solar development, as the flat terrain makes it relatively straightforward to connect large installations to the power grid. The minimal elevation changes throughout the region mean that most locations within a reasonable distance of Dixon would face similar topographical advantages for solar installations, with the primary considerations being land availability and proximity to transmission infrastructure rather than terrain challenges.

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

Tell Us About Your Work

We love seeing how our research helps others! If you've cited this article in your work, we'd be delighted to hear about it. Drop us a line via our Contact Us page or on X, to share where you've used our information - we may feature a link to your work on our site. This helps create a network of valuable resources for others in the solar energy community and helps us understand how our research is contributing to the field. Plus, we occasionally highlight exceptional works that reference our research on our social media channels.

Feeling generous?

Share this with your friends!

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.