Solar Energy Potential in Fentress, Texas
Fentress, Texas, located in the Northern Sub Tropics at coordinates 29.7579, -97.7799, offers a promising location for solar PV energy generation throughout the year. The seasonal electricity production varies significantly, with the highest output occurring during the summer months. Solar panels in this location can generate an average of 6.72 kWh per day for each kilowatt of installed capacity during summer. This drops to 5.11 kWh/day in autumn, reaches its lowest point at 3.31 kWh/day during winter, and rebounds to 5.42 kWh/day in spring.Optimal Panel Installation
For fixed panel installations in Fentress, the ideal angle to maximize year-round production is 26 degrees tilted toward the South. This specific angle has been calculated to capture the optimal amount of solar radiation throughout the year, accounting for the Earth's elliptical orbit and the location's specific latitude.Seasonal Variations and Production Patterns
The substantial difference between summer and winter production (more than double the output) indicates strong seasonal variations at this location. Summer clearly represents the peak production period, followed by spring, then autumn, with winter showing the lowest generation potential. This pattern suggests that Fentress has excellent solar potential for most of the year, with approximately 8-9 months of strong production potential, making it a generally favorable location for solar PV installations despite the winter reduction.Environmental and Weather Considerations
Several factors could potentially impact solar production in Fentress:- Occasional severe storms and hail events in this part of Texas could damage panels if not properly protected
- Summer heat can slightly reduce panel efficiency when temperatures become extreme
- Dust accumulation is possible in this semi-arid region, particularly during dry periods
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 Fentress
Seasonal solar PV output for Latitude: 29.7579, Longitude: -97.7799 (Fentress, 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 26° South in Fentress, United States
To maximize your solar PV system's energy output in Fentress, United States (Lat/Long 29.7579, -97.7799) throughout the year, you should tilt your panels at an angle of 26° 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 Fentress, 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 Fentress, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 26° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 14° South in Summer | 34° South in Autumn | 45° South in Winter | 23° 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 Fentress, 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 Fentress, 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 Fentress, United States
The topography surrounding Fentress, Texas presents a transitional landscape characteristic of the region where the Blackland Prairie meets the Texas Hill Country. Located in Caldwell County, this area features gently rolling terrain with modest elevation changes typically ranging between 400-600 feet above sea level. The San Marcos River flows through this region, creating a shallow valley with fertile alluvial soils along its banks. The landscape is predominantly characterized by open grasslands interspersed with stands of oak, mesquite, and other native trees, particularly along waterways and in riparian zones. The terrain around Fentress becomes gradually more level as one moves eastward toward the coastal plains, while to the west, the topography becomes more varied with increasing elevation and limestone outcroppings typical of the Hill Country. This transitional zone creates a diverse landscape with both flat expanses and subtle hills, providing different aspects and slopes throughout the region.
Solar PV Potential in the Region
Several areas near Fentress show promising characteristics for large-scale solar photovoltaic development. The most suitable locations would be the relatively flat, open expanses to the east and southeast of Fentress, where the terrain flattens considerably as it transitions toward the coastal plains. These areas benefit from minimal shading, good solar exposure, and generally level ground that reduces construction complexity and costs. Specifically, the agricultural lands between Fentress and Luling offer expansive, relatively unobstructed spaces with favorable topography for solar installations. These areas feature minimal slope, reducing the need for extensive grading and the associated environmental disruption and construction costs. The existing agricultural use suggests accessible road infrastructure and potentially available grid connections. Another promising zone lies in the open areas north of Fentress toward Prairie Lea, where the landscape features large, contiguous parcels of land with minimal topographical barriers. The gentle slopes in this direction actually provide a slight advantage for solar panel placement, as they can be oriented optimally toward the southern exposure. The western areas, while still viable, present more topographical challenges as the terrain becomes more characteristic of the Hill Country, with increased elevation changes and more wooded areas that could create shading issues. However, some of the elevated plateaus in this direction could still offer excellent solar exposure if carefully sited. The immediate river valley areas, while accessible, would generally be less suitable due to potential flooding concerns, higher humidity levels that can affect equipment longevity, and the ecological sensitivity of riparian zones.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: Saturday 19th of July 2025
Last Updated: Tuesday 22nd 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.
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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.




