Union City, Georgia, located in the Northern Sub Tropics at coordinates 33.5842, -84.5551, 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 Performance

The solar energy output at this location shows significant seasonal fluctuation. Summer delivers the strongest performance at 6.21 kWh per day per kW of installed solar capacity, making it the peak season for energy generation. Spring follows closely behind with 6.02 kWh per day per kW, creating an excellent six-month period from roughly March through August for maximum solar production. Autumn sees a notable decline to 4.49 kWh per day per kW, while winter represents the most challenging period with only 2.78 kWh per day per kW. This winter reduction to less than half of summer output is typical for locations at this latitude but requires careful consideration when sizing solar installations.

Optimal Installation Configuration

For fixed panel installations at Union City, the ideal tilt angle is 29 degrees facing south to maximize total year-round production. This angle represents the optimal compromise between capturing the high summer sun and the lower winter sun angles throughout the year.

Local Environmental and Weather Challenges

Several factors in the Union City area can significantly impact solar energy production:

• Humidity and atmospheric haze: Georgia's subtropical climate creates high humidity levels that can reduce solar irradiance and create atmospheric haze, particularly during summer months
• Frequent thunderstorms: The region experiences regular afternoon and evening thunderstorms, especially in summer, which can dramatically reduce daily solar output
• Tree coverage and pollen: The heavily forested Georgia landscape means significant shading issues, while spring pollen seasons can coat panels and reduce efficiency
• Ice storms: Winter ice storms, though infrequent, can damage panels or create temporary shading from ice accumulation

Preventative Measures for Optimal Performance

• Site selection: Choose locations with minimal tree shading, particularly avoiding shade during peak sun hours of 10 AM to 2 PM
• Regular cleaning schedule: Implement monthly panel cleaning during pollen season (March-May) and quarterly cleaning otherwise to remove accumulated dirt, pollen, and organic debris
• Robust mounting systems: Install heavy-duty mounting systems designed to withstand high winds from thunderstorms and potential ice loading
• Micro-inverters or power optimizers: Use these technologies to minimize the impact of partial shading from trees or storm debris on individual panels
• Proper drainage: Ensure installation sites have adequate drainage to prevent water pooling that could create humidity issues or pest problems

Union City's location offers decent solar potential, particularly during the warmer months, but requires thoughtful planning and maintenance to overcome the environmental challenges typical of Georgia's subtropical climate.

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 Union City, Georgia

Seasonal solar PV output for Latitude: 33.5842, Longitude: -84.5551 (Union City, 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 Union City, Georgia, United States

To maximize your solar PV system's energy output in Union City, Georgia, United States (Lat/Long 33.5842, -84.5551) 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 Union City, 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 Union City, 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	39° South in Autumn	49° South in Winter	26° 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 Union City, 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 Union City, Georgia, 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 Union City, Georgia, United States

Topographical Features of Union City, Georgia

Union City sits in the heart of the Georgia Piedmont region, characterized by gently rolling hills and relatively modest elevation changes. The area lies at approximately 1,000 feet above sea level, positioned within the broader Atlanta metropolitan region's southern corridor. This location places it in a transitional zone between the more mountainous terrain to the north and the flatter coastal plains that extend southward toward the Gulf of Mexico. The immediate landscape around Union City features a mixture of undulating terrain with gradual slopes and occasional steeper inclines. The topography has been shaped by millions of years of erosion, creating a series of ridges and valleys that run in a generally northeast-southwest direction. These formations are typical of the Piedmont province, where ancient crystalline rocks have been weathered into a landscape of moderate relief. Drainage patterns in the area follow the natural contours of the land, with several small creeks and tributaries flowing generally southward toward the Chattahoochee River system. The presence of these waterways has created narrow floodplains and slightly more level areas along their courses, though these represent a relatively small portion of the overall terrain.

Soil and Ground Conditions

The underlying geology consists primarily of weathered granite, gneiss, and schist, which have decomposed over time to create the characteristic red clay soils common throughout the Georgia Piedmont. These soils tend to be well-drained on slopes but can become quite dense and poorly permeable in flatter areas. The clay content can present challenges for construction and development, as it expands and contracts significantly with moisture changes. Mixed throughout the region are areas of sandy loam and other soil types that developed from different parent materials. These variations in soil composition often correspond to changes in elevation and drainage patterns, creating a mosaic of ground conditions across the landscape.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for extensive solar installations would be found on the broader, more gently sloping ridgetops and plateaus that characterize much of the area south and east of Union City. These elevated areas typically offer the most consistent terrain with gradual grades that can accommodate large arrays while minimizing grading requirements and construction costs. Areas with south-facing slopes of moderate grade would be particularly advantageous, as they provide natural orientation toward the sun while maintaining relatively stable ground conditions. The ridge systems that extend through Fulton and southern Clayton counties present numerous opportunities for development on appropriately oriented terrain. Former agricultural lands and cleared areas would be especially well-suited for solar development, as they often occupy the more level or gently rolling portions of the landscape. Many of these areas have already been cleared of forest cover and may have existing access roads and infrastructure that could support large-scale installations. The flatter areas near creek bottoms and drainage ways would generally be less suitable due to potential flooding concerns, environmental sensitivities, and the likelihood of encountering wetlands or other protected habitats. Additionally, these lower-lying areas may experience more frequent fog and atmospheric moisture that could impact system performance. Areas to the west and southwest of Union City, extending into Coweta and Fayette counties, offer some of the most promising topography for large installations. This region features extensive areas of gently rolling terrain with good drainage characteristics and relatively few significant obstacles to development.

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

Tell Us About Your Work

We love seeing how our research helps others! If you've cited this article in your work, we'd be delighted to hear about it. Drop us a line via our Contact Us page or on X, to share where you've used our information - we may feature a link to your work on our site. This helps create a network of valuable resources for others in the solar energy community and helps us understand how our research is contributing to the field. Plus, we occasionally highlight exceptional works that reference our research on our social media channels.

Feeling generous?

Share this with your friends!

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.