Madisonville, Louisiana, situated in the Northern Sub Tropics at coordinates 30.4044, -90.157, offers a generally favorable location for solar PV energy generation throughout the year. The region experiences substantial sunlight, particularly during the spring and summer months, making it a promising site for solar power installations.
Seasonal Solar Performance
Solar energy production in Madisonville varies across the seasons. Summer stands out as the peak period, with an impressive daily output of 5.96 kWh per kW of installed solar capacity. Spring follows closely behind, generating 5.54 kWh/day. Autumn maintains a respectable production level at 4.70 kWh/day. Winter, while less productive, still contributes a noteworthy 3.15 kWh/day.
The most ideal times for solar energy generation in Madisonville are from late spring through early fall. During these months, longer daylight hours and more direct sunlight contribute to increased energy production. However, the relatively consistent output across seasons indicates that solar PV systems can provide significant energy year-round in this location.
Optimal Panel Installation
For fixed panel installations in Madisonville, the ideal tilt angle to maximize year-round solar production is 27 degrees facing South. This angle optimizes the panels' exposure to sunlight throughout the year, accounting for the location's latitude and the Earth's orbit.
Environmental and Weather Considerations
While Madisonville's climate is generally conducive to solar energy production, there are some factors that could potentially impact solar panel efficiency:
- Hurricanes and tropical storms: The Gulf Coast location makes Madisonville vulnerable to these weather events, which can damage solar installations.
- High humidity: The area's humid subtropical climate may lead to increased dust and pollen accumulation on panels, potentially reducing efficiency.
To mitigate these risks, solar installations in Madisonville should incorporate robust mounting systems designed to withstand high winds. Regular cleaning and maintenance of panels can help combat efficiency loss due to humidity-related issues. Additionally, investing in high-quality, weather-resistant panels can ensure better performance and longevity in the face of challenging environmental conditions.
Overall, despite these considerations, Madisonville's location remains highly suitable for solar PV energy generation, with its ample sunlight and relatively mild climate providing a solid foundation for sustainable energy production throughout the year.
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 Madisonville
Seasonal solar PV output for Latitude: 30.4044, Longitude: -90.157 (Madisonville, 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 Madisonville, United States
To maximize your solar PV system's energy output in Madisonville, United States (Lat/Long 30.4044, -90.157) 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 Madisonville, 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 Madisonville, 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 | 36° South in Autumn | 46° 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 Madisonville, 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 Madisonville, 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 Madisonville, United States
The topography around Madisonville, Louisiana, located at 30.4044° N latitude and 90.157° W longitude, is characterized by its low-lying, flat terrain typical of the Gulf Coast region. This area is part of the Mississippi River Delta plain, with elevations generally ranging from just a few feet above sea level to around 30 feet at its highest points. The landscape is dominated by wetlands, marshes, and swamps, interspersed with small rivers and bayous that meander through the region. Madisonville sits on the north shore of Lake Pontchartrain, a large brackish estuary that significantly influences the local geography. The surrounding area features a mix of pine forests, hardwood bottomlands, and open grasslands, creating a diverse ecosystem. The Tchefuncte River flows near the town, adding to the network of waterways that crisscross the region.
Potential for Large-Scale Solar PV
When considering areas nearby that would be most suited for large-scale solar photovoltaic (PV) installations, several factors come into play. The flat terrain of the region is generally favorable for solar farms, as it reduces the need for extensive land preparation. However, the abundance of wetlands and flood-prone areas presents challenges for development. The most suitable locations for large-scale solar PV in the vicinity of Madisonville would likely be found on higher ground, away from flood zones and protected wetlands. Areas to the north and northeast of Madisonville, where the land gradually rises and becomes less swampy, could offer potential sites. These locations might include cleared agricultural lands or former timber plantations that provide the necessary open space for solar arrays. It's important to note that while the region receives ample sunlight, the humid subtropical climate can pose challenges for solar energy production. Frequent cloud cover and the potential for severe weather events, including hurricanes, must be taken into account when planning large-scale solar installations in this area. Any development of solar farms in the region would need to carefully consider environmental impacts, particularly on sensitive wetland ecosystems. Additionally, proper drainage and flood mitigation measures would be crucial to protect the solar infrastructure in this low-lying coastal area.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 26th of November 2024
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.




