Slidell, Louisiana, located in the Northern Sub Tropics, offers a promising location for solar energy generation throughout the year. The city's geographical position at latitude 30.2686 and longitude -89.729 provides favorable conditions for solar PV installations.
Seasonal Solar Performance
Solar energy production in Slidell varies across seasons, with summer being the most productive period. During summer months, solar panels can generate an average of 5.99 kWh per day for each kilowatt of installed capacity. Spring follows closely, with an average daily output of 5.77 kWh/kW. Autumn sees a moderate decrease in production, yielding 4.78 kWh/day per kW installed. Winter experiences the lowest output, with 3.27 kWh/day per kW, but still maintains a respectable level of energy generation.Optimal Panel Angle
For fixed-panel installations in Slidell, 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 seasonal variations in the sun's position.Peak Production Periods
The most favorable times for solar energy generation in Slidell are from late spring through early fall. During these months, longer daylight hours and higher sun angles contribute to increased solar panel efficiency and output.Environmental Considerations
While Slidell's climate is generally conducive to solar energy production, there are some environmental factors to consider: 1. Hurricane risk: Slidell's proximity to the Gulf Coast makes it vulnerable to hurricanes and tropical storms. To mitigate this risk, solar installations should use robust mounting systems and high-quality, wind-resistant panels. 2. High humidity: The area's humid subtropical climate can lead to moisture-related issues. Proper sealing and ventilation of solar equipment can help prevent corrosion and electrical problems. 3. Occasional cloudy days: While not a significant impediment, Slidell experiences some cloudy weather throughout the year. Using high-efficiency panels and considering battery storage can help maintain consistent energy production. By addressing these factors during installation and maintenance, solar energy systems in Slidell can achieve optimal performance and longevity, making the most of the area's solar potential 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 Slidell
Seasonal solar PV output for Latitude: 30.2686, Longitude: -89.729 (Slidell, 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 Slidell, United States
To maximize your solar PV system's energy output in Slidell, United States (Lat/Long 30.2686, -89.729) 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 Slidell, 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 Slidell, 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 Slidell, 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 Slidell, 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 Slidell, United States
The topography around Slidell, Louisiana, is characterized by its low-lying, flat terrain typical of the Gulf Coast region. Slidell is situated in an area where the land gradually transitions from coastal marshes to slightly higher ground. The elevation in and around Slidell is generally very low, with most of the area being only a few feet above sea level.
The landscape surrounding Slidell is dominated by wetlands, bayous, and small rivers. To the south and east, you'll find extensive marshlands that eventually give way to Lake Pontchartrain, a large brackish estuary. To the north and west, the land becomes slightly more elevated, with some gently rolling hills and pine forests as you move further inland.
Regarding areas nearby that would be most suited for large-scale solar PV (photovoltaic) installations, there are a few factors to consider:
The ideal locations for solar PV would be on slightly higher ground to avoid potential flooding issues. Areas to the north and northwest of Slidell, where the land begins to rise slightly, might be more suitable. These areas often have more open spaces and fewer wetlands, which is advantageous for solar installations.
Large, flat agricultural fields or cleared areas that are not prone to flooding would be prime candidates for solar farms. Such areas can often be found as you move away from the immediate coast and wetlands, perhaps 10-20 miles inland from Slidell.
It's important to note that while the region receives ample sunlight, which is beneficial for solar energy production, the high humidity and potential for severe weather (including hurricanes) in this area could pose challenges for large-scale solar installations. Any solar projects would need to be engineered to withstand these environmental factors.
Additionally, care must be taken to avoid ecologically sensitive areas such as wetlands or protected habitats. The most suitable locations would balance the need for open, stable land with environmental considerations and proximity to existing power 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: Tuesday 30th of July 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.




