Warrenton, Missouri presents a moderately favorable location for year-round solar energy generation, though with significant seasonal variations typical of the Northern Temperate Zone climate.
Seasonal Solar Performance
The solar energy output at this location shows a clear seasonal pattern that reflects Missouri's continental climate. Summer provides the highest energy production at 6.63 kWh per day per kW of installed solar capacity, making it the peak season for solar generation. Spring follows as the second-best season with 5.26 kWh per day per kW, offering excellent solar conditions as daylight hours increase and weather clears. Autumn production drops to 4.01 kWh per day per kW as the sun angle decreases and cloud cover typically increases. Winter presents the most challenging conditions with only 2.38 kWh per day per kW, representing roughly one-third of summer production levels.Optimal Installation Configuration
For maximum year-round energy production at Warrenton, solar panels should be installed at a fixed tilt angle of 34 degrees facing south. This angle has been calculated to optimize total annual output by accounting for the sun's changing position throughout the year and weighting for actual solar irradiance conditions at this latitude.Local Factors Affecting Solar Production
Several environmental and weather factors in the Warrenton area can impact solar energy generation:- Ice storms and freezing rain: Missouri's winter weather can coat panels with ice, completely blocking solar production
- Severe thunderstorms and hail: The region experiences frequent severe weather during spring and summer that can damage panels
- High humidity and morning fog: Common in Missouri's climate, reducing solar efficiency during peak morning hours
- Tornado activity: The area lies within tornado alley, posing risks to solar installations
Preventative Measures for Enhanced Performance
To maximize solar production despite these challenges, several installation strategies should be considered:- Impact-resistant panels: Use panels rated for large hail impacts common in Missouri storms
- Proper mounting systems: Install robust racking systems designed for high wind loads and potential tornado conditions
- Strategic placement: Position panels to minimize morning shade and allow natural air circulation to reduce humidity effects
- Regular maintenance scheduling: Plan for post-storm inspections and ice removal during winter 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 Warrenton, Missouri
Seasonal solar PV output for Latitude: 38.8156, Longitude: -91.1292 (Warrenton, Missouri, 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 34° South in Warrenton, Missouri, United States
To maximize your solar PV system's energy output in Warrenton, Missouri, United States (Lat/Long 38.8156, -91.1292) throughout the year, you should tilt your panels at an angle of 34° 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 Warrenton, Missouri, 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 Warrenton, Missouri, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 34° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 23° South in Summer | 43° South in Autumn | 54° South in Winter | 32° 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 Warrenton, Missouri, 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 Warrenton, Missouri, 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 Warrenton, Missouri, United States
Topographical Features Around Warrenton
The landscape surrounding Warrenton, Missouri presents a gently rolling terrain characteristic of the eastern Missouri region. This area sits within the transition zone between the Great Plains to the west and the more rugged Ozark highlands to the south. The topography consists primarily of undulating hills with modest elevation changes, creating a series of broad ridges and shallow valleys that extend across the countryside. The terrain around Warrenton features relatively gentle slopes and wide, open areas that have been shaped by centuries of agricultural use. The elevation varies gradually across the region, with most areas experiencing only moderate changes in height over considerable distances. This creates expansive stretches of land with favorable gradients that avoid the steep inclines found in more mountainous regions. The local watershed includes several small creeks and tributaries that have carved subtle valleys through the landscape. These waterways have created natural drainage patterns that leave the higher ground well-drained and suitable for various land uses. The soil composition in much of the area reflects its agricultural heritage, with deep, fertile layers that have developed over glacial deposits from ancient ice ages.Optimal Areas for Large-Scale Solar Development
The most promising locations for extensive solar photovoltaic installations around Warrenton would be the elevated plateaus and broad ridge tops that dominate the local landscape. These higher elevation areas typically offer the best combination of favorable terrain characteristics needed for large solar arrays. The gentle slopes found on these elevated sites provide natural drainage while maintaining accessibility for construction and maintenance equipment. Agricultural fields on the rolling hills south and west of Warrenton present particularly attractive opportunities for solar development. These areas feature relatively flat to gently sloping terrain that requires minimal grading or site preparation. The existing agricultural infrastructure, including access roads and utility connections, makes these locations especially practical for large-scale installations. The broad valleys between the ridges, while generally flat, may be less suitable due to potential drainage concerns and morning fog formation that can occur in low-lying areas. However, the elevated edges of these valleys, where the land begins to rise toward the surrounding hills, could offer excellent sites that combine the benefits of good drainage with manageable terrain. Areas northwest of Warrenton toward the Missouri River valley present mixed opportunities. While some sections offer suitable topography, the closer proximity to the river creates more variable microclimates and potential flooding concerns in certain locations. The slightly higher ground moving inland from the river corridor provides better conditions for solar installations. The terrain east of Warrenton includes several promising locations where agricultural land meets gently rolling hills. These areas benefit from good southern exposure on north-facing slopes while maintaining the relatively gentle gradients that make construction and maintenance feasible for large-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: Monday 14th of July 2025
Last Updated: Wednesday 6th of August 2025
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.




