Simpsonville, South Carolina, located in the Northern Sub Tropics, offers a generally favorable environment for solar PV energy generation throughout the year. The location's latitude and longitude (34.6923, -82.2919) provide a good balance of sunlight exposure across seasons, making it a viable option for solar energy production.
Seasonal Solar Performance
Solar energy production in Simpsonville varies significantly across seasons. Summer stands out as the most productive period, with an average daily output of 6.58 kWh per kW of installed solar capacity. Spring follows closely behind at 6.15 kWh/day. Autumn sees a moderate decrease in production at 4.48 kWh/day, while winter experiences the lowest output at 2.93 kWh/day.
The substantial difference between summer and winter production highlights the impact of seasonal variations on solar energy generation in this region. However, the relatively strong performance during spring and autumn helps to balance out the annual energy production.
Optimal Panel Installation
For fixed panel installations in Simpsonville, the ideal tilt angle to maximize year-round solar production is 30 degrees facing South. This angle is calculated to optimize exposure to the sun's rays throughout the year, taking into account the location's latitude and the Earth's elliptical orbit.
Environmental Considerations
While Simpsonville's climate is generally conducive to solar energy production, there are some environmental factors to consider:
- Humidity: The region's subtropical climate can lead to high humidity levels, potentially affecting panel efficiency. Regular cleaning may be necessary to prevent moisture-related issues.
- Thunderstorms: Summer thunderstorms are common in the area, which could temporarily reduce solar output. Installing surge protectors can help safeguard the system during electrical storms.
To mitigate these factors, consider using high-quality, weather-resistant panels and implementing a robust maintenance schedule. Additionally, incorporating a battery storage system can help balance energy production during periods of reduced sunlight or inclement weather.
Overall, Simpsonville's location provides a good opportunity for solar PV energy generation, with strong performance during summer and spring, and moderate output during autumn and winter. With proper installation and maintenance, solar panels can be an effective source of renewable energy in this South Carolina city.
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 Simpsonville
Seasonal solar PV output for Latitude: 34.6923, Longitude: -82.2919 (Simpsonville, 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 Simpsonville, United States
To maximize your solar PV system's energy output in Simpsonville, United States (Lat/Long 34.6923, -82.2919) 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 Simpsonville, 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 Simpsonville, 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 |
|---|---|---|---|
| 18° South in Summer | 40° South in Autumn | 50° South in Winter | 27° 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 Simpsonville, 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 Simpsonville, 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 Simpsonville, United States
The topography around Simpsonville, South Carolina, in the United States, is characterized by gently rolling hills and valleys typical of the Piedmont region. This area sits at the transition between the flat coastal plains to the east and the more mountainous Appalachian region to the west. The landscape features a mix of open fields, wooded areas, and small streams that wind through the terrain.
Simpsonville itself has an average elevation of around 900 feet above sea level, with subtle variations in height throughout the surrounding area. The land gradually rises as you move northwest towards the Blue Ridge Mountains, while it becomes slightly flatter heading southeast towards the coast. This undulating landscape creates a patchwork of slopes and flat areas, with no dramatic cliffs or steep mountains in the immediate vicinity.
For large-scale solar PV installations, the most suitable areas nearby would likely be found in the more open, flatter regions to the south and east of Simpsonville. These areas tend to have fewer trees and more expansive fields, which are ideal for solar farms. The gently sloping terrain in these directions provides good sun exposure throughout the day, which is crucial for maximizing solar energy production.
Specific locations that might be well-suited for solar PV projects could include cleared agricultural lands or former industrial sites in neighboring counties like Laurens or Newberry. These areas often have the advantage of existing infrastructure, such as roads and power lines, which can make development easier and more cost-effective.
It's important to note that while the topography is generally favorable for solar development, other factors such as local zoning laws, environmental considerations, and proximity to the electrical grid would also play significant roles in determining the most suitable locations for large-scale solar PV installations in the region surrounding Simpsonville.
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: Wednesday 21st of August 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.




