Horn Lake, Mississippi, located in the Northern Sub Tropics, presents a moderately favorable location for year-round solar energy generation, though with significant seasonal variations that potential solar installers should carefully consider.
Seasonal Solar Performance
The solar energy output at this location shows distinct seasonal patterns. Summer provides the strongest performance at 6.69 kWh per day per kW of installed solar capacity, making it the peak production season. Spring follows as the second-best period with 5.81 kWh per day per kW, offering nearly comparable output to summer months. Autumn sees a notable decline to 4.48 kWh per day per kW, while winter represents the challenging period with only 2.57 kWh per day per kW. This winter figure is less than 40% of summer production, highlighting the importance of proper system sizing to meet year-round energy needs.Optimal Installation Configuration
For maximum year-round energy production at Horn Lake, solar panels should be installed at a fixed tilt angle of 30 degrees facing south. This angle has been calculated to optimize total annual output by accounting for the sun's varying position throughout the year and weighting for solar irradiance potential.Local Environmental Challenges
Several environmental factors in the Mississippi region can impact solar energy production:- High humidity and frequent thunderstorms: The subtropical climate brings regular afternoon thunderstorms, particularly during summer months, which can temporarily reduce solar output and create maintenance challenges
- Severe weather potential: The location sits within a region prone to tornadoes, severe thunderstorms, and occasional ice storms in winter
- Heavy vegetation growth: The humid climate promotes rapid plant growth that can create shading issues if not properly managed
- Atmospheric haze: High humidity can create atmospheric conditions that slightly reduce solar irradiance
Preventative Installation Measures
To maximize solar production despite these challenges, several installation strategies prove beneficial: Proper mounting systems designed for high wind loads help panels withstand severe weather. Installing panels with adequate ground clearance and spacing allows for better air circulation, reducing heat buildup that can decrease efficiency in the humid climate. Regular vegetation management around the solar installation prevents shading from fast-growing plants. Choosing panels and inverters rated for high humidity and temperature fluctuations ensures better long-term performance. Installing a monitoring system helps identify performance issues quickly, particularly important given the potential for weather-related impacts. Proper grounding and surge protection become especially critical in an area with frequent thunderstorm activity. Overall, while Horn Lake offers decent solar potential, the significant winter production drop and regional weather challenges require careful planning and robust installation practices to achieve optimal results.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 Horn Lake
Seasonal solar PV output for Latitude: 34.9554, Longitude: -90.0348 (Horn Lake, 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 30° South in Horn Lake, United States
To maximize your solar PV system's energy output in Horn Lake, United States (Lat/Long 34.9554, -90.0348) throughout the year, you should tilt your panels at an angle of 30° 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 Horn Lake, 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 Horn Lake, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 30° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 19° South in Summer | 40° South in Autumn | 50° South in Winter | 28° 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 Horn Lake, 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 Horn Lake, 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 Horn Lake, United States
Topographical Features of the Horn Lake Region
The topography surrounding Horn Lake, Mississippi presents a relatively flat and gently rolling landscape characteristic of the Mississippi Delta region. This area sits within the broader Mississippi River floodplain, where centuries of sediment deposition have created an expansive, low-lying terrain with minimal elevation changes. The land gradually slopes toward the Mississippi River to the west, with elevations typically ranging from approximately 200 to 300 feet above sea level. The immediate vicinity of Horn Lake features predominantly agricultural land interspersed with suburban development. The terrain consists of fertile alluvial soils that have historically supported cotton farming and other agricultural activities. Small creeks and drainage channels meander through the landscape, creating subtle undulations in an otherwise flat topography. These waterways generally flow in a westward direction toward the Mississippi River, following the natural gradient of the land.Optimal Areas for Large-Scale Solar Development
The flat to gently rolling topography of the Horn Lake area presents excellent opportunities for large-scale solar photovoltaic installations. The most suitable locations would be the extensive agricultural fields that stretch across the region, particularly those situated on slightly elevated areas that provide good drainage while maintaining optimal solar exposure. Areas to the east and southeast of Horn Lake offer particularly promising conditions for solar development. These locations feature large, unobstructed parcels of relatively flat agricultural land with minimal shading from trees or structures. The gentle southward-facing slopes in these areas would be especially beneficial for solar panel positioning, as they naturally orient toward the sun's path across the sky. The agricultural fields along the major transportation corridors, including areas near Highway 51 and Interstate 55, present additional advantages for solar development. These locations combine suitable topography with existing infrastructure access, making them practical choices for large-scale installations. The proximity to existing electrical transmission lines and road networks would facilitate both construction and ongoing maintenance operations. Former agricultural areas that have transitioned out of active farming represent another category of prime solar development sites. These locations typically retain the flat, open characteristics ideal for solar installations while potentially being more readily available for alternative land uses. The established field boundaries and existing access roads in these areas could streamline the development process. Areas with slightly elevated positions relative to the surrounding landscape would be particularly advantageous, as they tend to have better natural drainage and reduced risk of flooding during severe weather events. These elevated agricultural parcels, while still maintaining the flat characteristics necessary for efficient solar panel installation, offer improved long-term operational reliability.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: Thursday 17th of July 2025
Last Updated: Wednesday 6th 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.




