Thomasville, Alabama, located in the Northern Sub Tropics, offers a moderately favorable environment for year-round solar energy generation, though with notable seasonal variations that potential solar installers should understand.
Seasonal Solar Performance
The location shows strong solar production during warmer months, with summer delivering 6.17 kWh per day per kW of installed solar capacity. Spring follows closely with 6.02 kWh per day, making these the prime seasons for solar energy generation. Autumn drops to 4.63 kWh per day, while winter shows the lowest output at 3.03 kWh per day per kW installed. This seasonal pattern means solar panels in Thomasville will generate roughly twice as much electricity in summer compared to winter. The location performs best from late spring through early fall, with peak production typically occurring during the summer months when longer days and higher sun angles combine for optimal conditions. For maximum year-round energy production, solar panels should be installed at a fixed tilt angle of 28 degrees facing south. This angle has been calculated to optimize total annual solar output by accounting for the sun's changing position throughout the year and weighting for the varying solar irradiance levels across seasons.Local Factors Affecting Solar Production
Several environmental and weather factors in Thomasville could impact solar panel performance:- High humidity and frequent thunderstorms - Alabama's subtropical climate brings regular afternoon thunderstorms, especially during summer months, which can temporarily reduce solar output
- Dust and pollen accumulation - The region's agricultural activity and abundant plant life can lead to significant dust and pollen buildup on panels
- Severe weather events - Occasional hurricanes, tornadoes, and hailstorms pose risks to solar installations
- Tree coverage and shading - Alabama's heavily forested landscape may create shading issues depending on installation site
Preventative Measures for Better Performance
To maximize solar energy production despite these challenges, several installation strategies prove effective: Regular cleaning schedules become essential, with panels needing washing every 4-6 weeks during high pollen seasons (typically spring) and after major dust events. Installing panels with adequate spacing allows for better air circulation and easier maintenance access. Choosing high-quality mounting systems rated for high wind speeds helps panels withstand severe weather. Micro-inverters or power optimizers can minimize the impact of partial shading from trees or passing clouds, ensuring that shaded panels don't reduce the output of the entire system. Proper site selection away from large trees and with southern exposure maximizes sun exposure throughout the day. Installing lightning protection systems provides additional security during the frequent thunderstorms common to the region. Despite these considerations, Thomasville's location still offers reasonable solar potential, particularly during the six-month period from spring through early fall when production levels remain consistently strong.Note: The Northern Sub Tropics extend from 23.5° latitude North up to 35° 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 Thomasville
Seasonal solar PV output for Latitude: 31.9135, Longitude: -87.7358 (Thomasville, 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 28° South in Thomasville, United States
To maximize your solar PV system's energy output in Thomasville, United States (Lat/Long 31.9135, -87.7358) throughout the year, you should tilt your panels at an angle of 28° 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 Thomasville, 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 Thomasville, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 28° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 16° South in Summer | 37° South in Autumn | 47° South in Winter | 24° 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 Thomasville, 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 Thomasville, 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 Thomasville, United States
Topographical Features Around Thomasville
The topography surrounding Thomasville, Alabama presents a gently rolling landscape characteristic of the southeastern United States coastal plain region. This area sits within the broader Gulf Coastal Plain, featuring relatively low elevations and subtle undulations across the terrain. The landscape consists primarily of gentle hills and shallow valleys, with elevations typically ranging from approximately 100 to 300 feet above sea level throughout the immediate vicinity. The terrain around Thomasville displays the classic features of the Black Belt region of Alabama, named for its distinctive dark, fertile soils. These soils developed over limestone and chalk formations, creating a somewhat flatter topography compared to the more mountainous regions found further north in the state. The rolling nature of the land is punctuated by numerous small creeks and tributaries that flow generally southward toward the Gulf of Mexico, creating modest drainage channels and occasional wetland areas.Vegetation and Land Use Patterns
The natural vegetation in this region consists primarily of mixed pine and hardwood forests, though much of the original forest cover has been converted to agricultural use or managed timber operations. Open agricultural fields, pastureland, and planted pine forests dominate much of the landscape, creating a patchwork of different land uses across the gently rolling terrain. The area experiences a humid subtropical climate that supports lush vegetation growth, meaning that any undeveloped land quickly becomes covered with dense vegetation if left unmanaged. This creates both opportunities and challenges for large-scale development projects, as cleared areas provide excellent building sites, but maintaining cleared areas requires ongoing vegetation management.Optimal Areas for Large-Scale Solar Development
The most suitable locations for large-scale solar photovoltaic installations around Thomasville would be the relatively flat to gently sloping agricultural fields and cleared pastureland that dot the landscape. These areas offer several advantages including existing cleared vegetation, established access roads, and proximity to existing electrical infrastructure that serves the rural agricultural community. The ideal sites would be those with southern-facing slopes of five degrees or less, which provide optimal panel positioning while minimizing grading and earthwork requirements. Many of the existing agricultural fields in the area already meet these criteria, having been cleared and leveled for farming operations over many decades. Areas to avoid would include the steeper hillsides, though these are relatively uncommon in the region, and the low-lying areas near creeks and streams that may experience seasonal flooding or have wetland characteristics requiring environmental protection. The numerous small drainage ways that crisscross the landscape would need to be carefully considered in any large-scale development planning. The existing transportation infrastructure, including county roads and state highways that serve the agricultural community, would generally provide adequate access for construction and maintenance of solar installations. The relatively stable soils derived from the underlying limestone and chalk formations would provide good foundation conditions for solar mounting systems, though site-specific geotechnical analysis would be necessary for any major installation.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: Thursday 31st of July 2025
Last Updated: Friday 8th 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.




