Longville, Louisiana presents a moderately favorable location for year-round solar energy generation, though with significant seasonal variations that property owners should understand before investing in solar panels.
Seasonal Solar Performance
The solar energy output at this Northern Sub Tropical location varies considerably throughout the year. Summer provides the strongest performance at 6.33 kWh per day per kW of installed solar capacity, making it the ideal season for solar generation. Spring follows as the second-best performing season with 5.19 kWh per day per kW, while autumn drops to 4.65 kWh per day per kW. Winter presents the most challenging conditions with only 3.04 kWh per day per kW of production. This seasonal pattern means that summer and spring are the optimal times for solar energy generation at Longville, producing more than double the winter output during peak summer months.Optimal Panel Installation
For fixed panel installations at this location, the ideal tilt angle to maximize total year-round solar production is 27 degrees facing south. This angle has been calculated to optimize energy capture across all seasons by accounting for the sun's changing position throughout the year and weighting for daily solar potential.Local Environmental Challenges
Several significant environmental and weather factors in Longville, Louisiana can impede solar panel performance:- High Humidity and Heat: The subtropical climate creates consistently high humidity levels that can reduce panel efficiency and accelerate equipment degradation
- Frequent Thunderstorms: Louisiana experiences regular severe thunderstorms, particularly during summer months, which can damage panels and create extended periods of cloud cover
- Hurricane Risk: The Gulf Coast location makes this area vulnerable to hurricanes and tropical storms that can cause catastrophic damage to solar installations
- Heavy Rainfall: While rain can help clean panels, excessive rainfall reduces solar production and can cause flooding issues
- Salt Air Corrosion: Proximity to the Gulf of Mexico means salt-laden air can accelerate corrosion of metal components
Protective Installation Measures
To maximize solar energy production despite these challenges, several preventative measures should be implemented:- Hurricane-Rated Mounting: Install panels with reinforced mounting systems designed to withstand high winds and meet local building codes for hurricane zones
- Corrosion-Resistant Materials: Choose panels and mounting hardware with marine-grade coatings and materials specifically designed for coastal environments
- Enhanced Drainage: Ensure proper drainage around ground-mounted systems and adequate waterproofing for roof penetrations
- Regular Maintenance: Implement frequent cleaning and inspection schedules to remove salt buildup, debris, and check for storm damage
- Micro-Inverters or Power Optimizers: Use these technologies to minimize production losses when individual panels are shaded by storm clouds or debris
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 Longville
Seasonal solar PV output for Latitude: 30.6052, Longitude: -93.2318 (Longville, 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 Longville, United States
To maximize your solar PV system's energy output in Longville, United States (Lat/Long 30.6052, -93.2318) 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 Longville, 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 Longville, 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 |
|---|---|---|---|
| 15° South in Summer | 36° South in Autumn | 46° 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 Longville, 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 Longville, 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 Longville, United States
Topographical Features Around Longville
The topography surrounding Longville in southwestern Louisiana is characterized by relatively flat to gently rolling terrain typical of the Gulf Coastal Plain region. This area sits at a low elevation, generally ranging from sea level to approximately 50 feet above sea level, creating a landscape dominated by subtle undulations rather than dramatic elevation changes. The terrain consists primarily of alluvial deposits and coastal prairie, with numerous waterways including bayous, creeks, and small rivers threading through the landscape.
The region features extensive wetlands, marshes, and swampland interspersed with areas of higher ground that support agricultural activities and residential development. Much of the surrounding countryside is covered by pine forests, mixed hardwood stands, and open grasslands used for cattle ranching and farming. The soil composition varies from sandy loams on the higher ground to organic-rich soils in the lower-lying wetland areas.
Natural drainage patterns flow generally southward toward the Gulf of Mexico, creating a network of waterways that influence the local topography. These water features, combined with the region's proximity to the coast, contribute to the area's relatively humid subtropical climate and influence vegetation patterns across the landscape.
Optimal Areas for Large-Scale Solar Development
The most suitable locations for large-scale solar photovoltaic installations around Longville would be the elevated prairie areas and cleared agricultural lands that offer relatively flat, well-drained terrain. These areas provide the stable ground conditions necessary for mounting solar arrays while avoiding the complications associated with wetlands and flood-prone zones.
Former agricultural fields and pastureland present excellent opportunities for solar development, as they typically feature minimal vegetation, good drainage, and existing road access for construction and maintenance activities. The gently rolling hills found throughout the region can be advantageous for solar installations when properly oriented, as they may provide natural drainage while maintaining suitable angles for panel placement.
Areas with sandy or sandy-loam soils would be preferable over locations with heavy clay or organic soils, as they provide better foundation stability and drainage characteristics. Sites positioned away from major waterways and wetlands would avoid environmental restrictions and reduce the risk of flooding or ground instability that could affect solar infrastructure.
The existing network of rural roads and proximity to electrical transmission infrastructure in the region would support the development of utility-scale solar facilities. Open areas that have been previously cleared for agriculture or timber harvesting would require minimal site preparation compared to forested locations, making them more economically viable for large solar 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: Sunday 20th of July 2025
Last Updated: Thursday 7th of August 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.




