White Oak, Texas, located in the Northern Sub Tropics at coordinates 32.5397, -94.8646, presents a moderately favorable location for year-round solar energy generation, though with notable seasonal variations in output.
Seasonal Solar Performance
The solar energy production at this location shows significant seasonal fluctuation. Summer delivers the strongest performance at 6.83 kWh per day per kW of installed solar capacity, making it the ideal time for solar generation. Spring follows as the second-best season with 5.32 kWh per day per kW, while autumn drops to 4.70 kWh per day per kW. Winter presents the most challenging conditions with only 2.75 kWh per day per kW of production. This seasonal pattern means that summer and spring are the optimal periods for solar energy generation in White Oak, producing more than double the energy compared to winter months. The substantial difference between peak summer and winter production indicates that solar installations here will need to account for significant seasonal variability in energy output. For maximum year-round energy production from a fixed panel installation at this location, solar panels should be tilted at 28 degrees facing south. This angle optimizes the total annual solar collection by balancing the sun's varying position throughout the seasons.Local Environmental and Weather Challenges
Several environmental and weather factors in East Texas can significantly impact solar energy production in White Oak:- High humidity and frequent cloud cover, particularly during summer months when thunderstorms are common
- Severe weather events including hail storms, tornadoes, and strong winds from Gulf weather systems
- Heavy pollen loads during spring months that can coat panels and reduce efficiency
- Occasional ice storms during winter that can damage equipment or block sunlight
Preventative Measures for Optimal Performance
To maximize solar energy production and protect equipment in White Oak's climate, several installation strategies should be considered: Regular maintenance scheduling is crucial, particularly during high-pollen spring months when panels require frequent cleaning to maintain efficiency. Installing panels with anti-reflective coatings and self-cleaning surfaces can help reduce the impact of pollen and dust accumulation. For weather protection, choosing panels and mounting systems rated for high wind loads and hail impact is essential given the area's exposure to severe weather. Proper grounding and surge protection systems become even more important due to the frequency of thunderstorms in the region. Adequate drainage around ground-mounted systems helps prevent water damage during the area's occasional heavy rainfall events. Additionally, selecting equipment designed to handle high humidity levels will ensure longer system lifespan and consistent performance throughout the year. Despite these challenges, White Oak's location still provides reasonable solar energy potential, particularly during the warmer months when energy demand for air conditioning typically peaks, making it a viable location for solar installations with proper planning and equipment selection.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 White Oak
Seasonal solar PV output for Latitude: 32.5397, Longitude: -94.8646 (White Oak, 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 White Oak, United States
To maximize your solar PV system's energy output in White Oak, United States (Lat/Long 32.5397, -94.8646) 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 White Oak, 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 White Oak, 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 |
|---|---|---|---|
| 17° South in Summer | 37° South in Autumn | 48° South in Winter | 26° 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 White Oak, 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 White Oak, 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 White Oak, United States
Topographical Features of White Oak, Texas
White Oak sits in the rolling hills of East Texas, positioned within Gregg County in a region characterized by gently undulating terrain typical of the East Texas Pine Forest ecoregion. The landscape around this small community features modest elevation changes, with hills rising and falling in gradual slopes rather than steep inclines. The area lies at an elevation of approximately 300 feet above sea level, with surrounding terrain varying between 250 and 400 feet in elevation.
The topography is dominated by mixed pine and hardwood forests, interspersed with cleared agricultural land and pastures. Small creeks and tributaries flow through the region, creating shallow valleys and drainage patterns that have shaped the local landscape over time. The soil composition consists primarily of sandy loams and clay deposits, which are common throughout East Texas. These geological features create a relatively stable foundation for development while maintaining the characteristic rolling appearance of the region.
The forested areas are dense in many locations, with tall pine trees and mixed hardwoods creating significant canopy cover. However, there are substantial cleared areas where farming and ranching activities have opened up the landscape, providing better access to direct sunlight throughout the day. The terrain is generally well-drained, with water naturally flowing toward the various creek systems that meander through the area.
Optimal Areas for Large-Scale Solar Development
The most suitable locations for large-scale solar photovoltaic installations around White Oak would be the cleared agricultural fields and pastureland that dot the landscape. These areas offer the dual advantages of minimal tree removal requirements and relatively flat to gently sloping terrain that can accommodate solar panel arrays without extensive grading or earthwork. The existing cleared farmland provides immediate access to open sky conditions necessary for effective solar energy capture.
South-facing slopes in the region present particularly attractive opportunities for solar development, as these natural orientations can enhance energy production throughout the day. The gentle nature of most slopes in the area means that solar installations can follow the natural contours of the land, reducing construction costs while maintaining optimal panel positioning. Areas with slopes between 5 and 15 degrees are especially well-suited for fixed-tilt solar installations.
The cleared pastureland scattered throughout the region offers another excellent option for solar development. These areas typically have minimal infrastructure conflicts and provide large, contiguous spaces that can accommodate utility-scale solar farms. The existing agricultural use of much of this land means that access roads and basic infrastructure may already be in place, potentially reducing development costs and complexity.
Areas near existing electrical transmission infrastructure would be particularly valuable for large-scale solar development, as connection to the electrical grid represents a significant consideration in project planning. The relatively flat to gently rolling terrain throughout much of the cleared land around White Oak provides flexibility in siting solar installations while maintaining reasonable construction and maintenance access.
Developers should focus on identifying the largest contiguous cleared areas with southern exposure and minimal shading from surrounding forest cover. The agricultural lands that have been maintained as open fields or grazing areas represent the most immediately viable locations, offering the combination of appropriate terrain, existing land use patterns, and favorable solar access conditions necessary for successful large-scale photovoltaic installations.
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: Tuesday 15th 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.




