Dillon, South Carolina, located in the Northern Sub Tropics at coordinates 34.4125, -79.3805, presents a moderately favorable location for year-round solar energy generation, though with notable seasonal variations that potential solar installers should carefully consider.

Seasonal Solar Production Patterns

The solar energy output at this location shows significant seasonal fluctuations. Summer delivers the highest production at 6.49 kWh per day per kW of installed solar capacity, making it the peak generation season. Spring follows closely with strong performance at 6.11 kWh per day per kW, representing nearly 94% of summer output levels. Autumn production drops considerably to 4.46 kWh per day per kW, while winter presents the greatest challenge with only 2.81 kWh per day per kW of installed capacity. This winter figure represents less than half of the summer production, highlighting the substantial seasonal variation that characterizes this location. The ideal times for solar generation at Dillon are clearly the warmer months, with the period from spring through summer offering the most consistent and highest energy yields. The spring and summer seasons combined provide approximately 75% more daily energy production compared to the autumn and winter months.

Optimal Panel Configuration

For maximum year-round solar production at this Dillon location, fixed solar panels should be tilted at 30 degrees facing south. This optimal angle is calculated by analyzing daily solar elevation angles throughout the year, determining optimal panel tilts for each day, and then weighting these angles based on actual solar irradiance data while accounting for Earth's elliptical orbit around the sun.

Environmental and Weather Factors

Several significant local factors can impede solar production in Dillon, South Carolina, and require careful consideration during installation planning. Humidity and Moisture: The subtropical climate brings high humidity levels, particularly during summer months when solar production peaks. This persistent moisture can lead to more frequent soiling of solar panels and potentially reduce light transmission. Additionally, high humidity creates ideal conditions for organic growth such as algae, moss, or lichen on panel surfaces. Severe Weather Events: Dillon's location makes it vulnerable to tropical storms and hurricanes, particularly during late summer and early autumn. These weather systems can bring damaging winds, hail, and debris that pose risks to solar installations. Seasonal Storm Patterns: The region experiences frequent thunderstorms during summer months, often accompanied by heavy rainfall, strong winds, and occasional hail. While brief, these storms can temporarily reduce production and potentially cause damage.

Preventative Measures for Enhanced Production

Several installation strategies can help mitigate these environmental challenges and maximize energy production:

• Enhanced mounting systems: Install reinforced mounting hardware rated for high wind loads to withstand tropical storm conditions
• Regular cleaning schedules: Implement more frequent panel cleaning routines during humid months to prevent buildup of organic matter and maintain optimal light transmission
• Improved drainage: Design installations with proper drainage to prevent water pooling around mounting structures
• Storm-resistant design: Consider panels and mounting systems specifically rated for hurricane-force winds common to the southeastern United States
• Preventive maintenance: Schedule regular inspections before and after storm seasons to identify and address potential issues

Despite these environmental challenges, Dillon's strong spring and summer solar production potential makes it a viable location for solar energy generation, provided that installations account for the region's subtropical climate conditions and severe weather risks.

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 Dillon

Seasonal solar PV output for Latitude: 34.4125, Longitude: -79.3805 (Dillon, 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 Dillon, United States

To maximize your solar PV system's energy output in Dillon, United States (Lat/Long 34.4125, -79.3805) 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 Dillon, 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 Dillon, 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	39° 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 Dillon, 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 Dillon, United States.

Our calculation method

1. Solar Position:
   We determine the Sun's position on the Winter solstice using the location's latitude and solar declination.
2. Shadow Projection:
   We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle.
3. 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 Dillon, United States

Topography Around Dillon, South Carolina

The landscape surrounding Dillon, South Carolina is characterized by gently rolling terrain typical of the South Carolina Coastal Plain region. This area sits at a relatively low elevation, approximately 150 feet above sea level, creating a predominantly flat to mildly undulating topography that extends in all directions from the city center. The terrain features subtle elevation changes with gentle slopes and occasional low ridges interspersed with small valleys and drainage areas. The land gradually slopes toward the southeast, following the natural drainage patterns that eventually lead to the Atlantic Ocean. Most of the surrounding countryside consists of agricultural fields, pine forests, and mixed hardwood areas that have been shaped by centuries of farming and forestry activities. Several small creeks and tributaries meander through the landscape, creating narrow floodplains and slightly lower-lying areas. These waterways include branches of the Little Pee Dee River system, which flows roughly parallel to the area before eventually joining the larger Pee Dee River further southeast.

Optimal Areas for Large-Scale Solar Development

The relatively flat terrain throughout much of the Dillon area presents excellent opportunities for large-scale solar photovoltaic installations. The most suitable locations would be the cleared agricultural lands and former farmland that dot the landscape, particularly those areas with minimal slope and good access to existing infrastructure. Areas to the north and west of Dillon appear particularly well-suited for solar development, where the terrain is especially level and consists primarily of open fields with few obstructions. These locations offer the advantage of minimal grading requirements and reduced installation costs due to the naturally flat conditions. The slightly elevated ridgelines scattered throughout the region could also serve as prime solar sites, as they tend to have good drainage characteristics and are often already cleared of vegetation. These higher areas typically receive excellent exposure while avoiding the potential drainage issues associated with lower-lying locations near creek beds and floodplains. Former agricultural areas that have been taken out of active production represent another category of ideal solar sites. These locations typically have existing road access, cleared land, and established property boundaries that can facilitate development while avoiding conflicts with active farming operations or sensitive environmental areas.

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!

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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.