Spring Branch, Texas, located in the Northern Sub Tropics, offers a promising location for solar PV energy generation throughout the year. This area experiences varying levels of solar production across the seasons, with noticeable fluctuations that follow expected patterns for its latitude.
Seasonal Solar Production
The solar energy output at this location shows significant seasonal variation. Summer stands out as the most productive period, generating approximately 6.84kWh per day for each kilowatt of installed solar capacity. Spring follows as the second most productive season with 5.54kWh/day, while autumn yields 5.16kWh/day. Winter, as expected, produces the least energy at 3.41kWh/day per installed kilowatt.
These figures indicate that Spring Branch experiences strong solar potential overall, with summer months being particularly advantageous for solar energy harvesting. The substantial difference between summer and winter production (about 3.43kWh/day) highlights the seasonal nature of solar generation at this location.
Optimal Panel Installation
For fixed solar panel installations in Spring Branch, the ideal tilt angle to maximize year-round energy production is 27 degrees facing South. This specific angle has been calculated to optimize solar capture throughout the year, accounting for the Earth's elliptical orbit and the location's position in the Northern Sub Tropics.
Environmental Considerations
Several environmental factors could potentially affect solar production in Spring Branch:
- Summer thunderstorms and occasional severe weather events common to Central Texas may temporarily reduce production during otherwise peak months.
- Tree coverage and hill shading in parts of Spring Branch, which is located in the Texas Hill Country, could cast shadows on panels at certain times of day.
- Dust and pollen accumulation, particularly during spring when oak and cedar pollen counts are high in this region, can reduce panel efficiency if not addressed.
Preventative Measures
To maximize solar production despite these challenges, consider implementing these preventative measures:
- Install panels in open areas away from tall trees and structures that could cast shadows, especially during winter when the sun is lower in the sky.
- Implement a regular cleaning schedule, particularly after pollen season and during extended dry periods when dust accumulation is highest.
- Consider micro-inverters or power optimizers if partial shading is unavoidable, as these technologies can minimize production losses from partially shaded panels.
- Ensure proper panel spacing and mounting height to facilitate natural cleaning from rainfall and minimize debris accumulation.
With these considerations addressed, Spring Branch presents a viable location for solar PV installation, with particularly strong production potential from late spring through early fall.
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 Spring Branch
Seasonal solar PV output for Latitude: 29.8899, Longitude: -98.4253 (Spring Branch, 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 27° South in Spring Branch, United States
To maximize your solar PV system's energy output in Spring Branch, United States (Lat/Long 29.8899, -98.4253) throughout the year, you should tilt your panels at an angle of 27° 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 Spring Branch, 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 Spring Branch, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 27° 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 Spring Branch, 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 Spring Branch, 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 Spring Branch, United States
Spring Branch, situated in Comal County, Texas, presents a varied and interesting topography typical of the Texas Hill Country region. The terrain around Spring Branch is characterized by rolling hills, limestone outcroppings, and numerous small valleys. This area sits at the eastern edge of the Edwards Plateau, where the landscape transitions from the flatter coastal plains to the more rugged hill country. Elevations in the vicinity typically range from approximately 900 to 1300 feet above sea level, creating a gently undulating profile across the landscape. The area features several waterways, most notably the Guadalupe River which flows through the region, carving valleys and creating riparian corridors. Numerous smaller creeks and tributaries further dissect the landscape, creating natural drainage systems throughout the territory. These waterways have, over time, contributed to the erosion of the limestone bedrock, forming the characteristic hills and valleys that define the region. Vegetation in the area consists primarily of live oak, cedar (Ashe juniper), and various native grasses, with denser tree coverage typically found along waterways and in protected valleys. The hillsides often display exposed limestone and thinner soils, while valley bottoms tend to have deeper, more fertile soil deposits.
Solar PV Suitability in the Region
For large-scale solar photovoltaic (PV) installations, several areas near Spring Branch offer promising conditions. The most suitable locations would be the relatively flat plateaus and gently sloping areas that face south or southwest. These areas benefit from reduced shadowing effects and maximum sun exposure throughout the day. The elevated terrain approximately 3-5 miles northwest of Spring Branch presents particularly favorable conditions for solar development. These higher elevation areas typically experience less morning fog than the river valleys and have fewer tall trees to cast shadows. The flatter sections of these plateaus would require minimal grading, reducing installation costs and environmental impact. Areas to avoid would include the steeper slopes, especially those facing north or northeast, as these receive significantly less direct sunlight. Additionally, the riparian corridors along the Guadalupe River and its tributaries would be less suitable due to increased humidity, potential flooding concerns, and greater environmental sensitivity. The western portions of Comal County and neighboring Kendall County offer expansive areas of gently rolling terrain that would accommodate larger solar arrays. These areas typically have thinner tree coverage and more consistent sun exposure throughout the year. The higher elevations also benefit from slightly cooler temperatures, which can improve solar panel efficiency compared to installations in hotter lowland areas. Land approximately 7-10 miles west of Spring Branch features a combination of favorable topography, reduced development, and good access to existing road infrastructure, making it particularly suitable for large-scale solar development. These areas strike a balance between the need for relatively flat terrain and proximity to existing electrical transmission infrastructure.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 23rd of June 2025
Last Updated: Monday 21st 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.
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.




