Gray, Georgia, located in the Northern Sub Tropics at coordinates 33.0162, -83.5413, presents a moderately favorable location for year-round solar energy generation, though with notable seasonal variations in output.
Seasonal Solar Performance
The solar energy production at this location shows strong seasonal patterns. Summer delivers the highest output at 6.36 kWh per day per kW of installed capacity, closely followed by spring at 6.12 kWh per day. These warmer months represent the ideal times for solar generation at Gray, Georgia, providing nearly identical peak performance levels. Autumn sees a moderate decline to 4.48 kWh per day, while winter represents the least productive season at 2.87 kWh per day per kW installed. This winter reduction to less than half of summer output is typical for locations at this latitude in the Northern Sub Tropics.Optimal Panel Configuration
For maximum year-round energy production at this Gray, Georgia location, solar panels should be installed at a fixed tilt angle of 29 degrees facing south. This angle has been calculated to optimize total annual output by accounting for the sun's varying elevation throughout the year and weighting these angles based on actual solar irradiance data.Local Factors Affecting Solar Production
Several environmental and weather factors in Gray, Georgia can significantly impact solar energy production:- High humidity and frequent thunderstorms - Georgia's subtropical climate brings regular afternoon and evening thunderstorms, particularly during summer months
- Hail potential - Severe weather systems can produce hail that may damage solar panels
- Heavy pollen seasons - Georgia's abundant vegetation creates substantial pollen loads, especially in spring
- Occasional ice storms - Winter weather can bring freezing rain and ice accumulation
Preventative Measures for Optimal Performance
To maximize solar energy production despite these challenges, several installation strategies should be considered. Panels should be mounted with adequate drainage and positioned to allow natural rainfall to help clean accumulated pollen and debris. Installing panels with impact-resistant glass and robust mounting systems helps protect against hail damage. Regular maintenance scheduling becomes particularly important during pollen season, when panels may require more frequent cleaning to maintain efficiency. Ensuring proper electrical grounding and surge protection systems will help protect the installation from lightning strikes during Georgia's frequent thunderstorms. The mounting system should be designed to handle occasional ice loads, and panels should be positioned to allow ice and snow to slide off naturally rather than accumulating on the surface.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 Gray, Georgia
Seasonal solar PV output for Latitude: 33.0162, Longitude: -83.5413 (Gray, Georgia, 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 29° South in Gray, Georgia, United States
To maximize your solar PV system's energy output in Gray, Georgia, United States (Lat/Long 33.0162, -83.5413) throughout the year, you should tilt your panels at an angle of 29° 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 Gray, Georgia, 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 Gray, Georgia, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 29° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 17° South in Summer | 38° South in Autumn | 48° South in Winter | 25° 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 Gray, Georgia, 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 Gray, Georgia, 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 Gray, Georgia, United States
Topographical Features Around Gray, Georgia
Gray sits in the heart of central Georgia's Piedmont region, characterized by gently rolling hills and relatively modest elevation changes. The terrain around this area features a mix of agricultural land, forested sections, and developed areas, with elevations typically ranging from about 400 to 600 feet above sea level. The landscape consists of undulating farmland interspersed with patches of pine and hardwood forests, creating a varied but generally manageable topography for development projects.
The region benefits from well-drained soils and relatively stable geological conditions, with the underlying bedrock consisting primarily of metamorphic rocks typical of the Piedmont province. Small creeks and streams meander through the area, creating minor valleys and ridgelines that add subtle variation to the otherwise moderate terrain. The agricultural heritage of the region means that much of the land has been cleared and maintained as open fields, which can be advantageous for large-scale development projects.
Optimal Areas for Large-Scale Solar Development
The most suitable locations for extensive solar photovoltaic installations around Gray would be the broad, open agricultural fields that stretch across the gently sloping hillsides. These areas offer several key advantages including minimal tree cover, relatively flat to gently sloping terrain that requires minimal grading, and existing cleared land that reduces environmental impact concerns. The south-facing slopes throughout the region would be particularly well-suited, as they naturally optimize solar panel orientation.
Areas immediately southeast and southwest of Gray present excellent opportunities, where large tracts of farmland extend across rolling hills with minimal obstructions. These locations typically feature good road access for construction and maintenance, proximity to existing electrical infrastructure, and terrain that naturally drains well to prevent water accumulation issues. The moderate elevation changes in these areas can actually be beneficial, as they allow for natural drainage while maintaining optimal solar exposure.
Former agricultural land that has transitioned out of active farming would represent ideal candidates for solar development, as these areas maintain the cleared, open characteristics necessary for large installations while potentially facing fewer land-use conflicts. The relatively stable geology of the Piedmont region also provides a solid foundation for mounting systems and reduces concerns about ground movement or settling that might affect solar panel arrays over their operational lifespan.
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: Friday 8th of August 2025
Last Updated: Friday 8th 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.




