Mount Juliet, Tennessee, located in the Northern Temperate Zone at coordinates 36.1868, -86.5067, offers a relatively favorable environment for solar PV energy generation throughout the year. The location experiences distinct seasonal variations in solar energy production, with peak performance during the summer months.
Seasonal Solar Performance
Solar panels in Mount Juliet can expect to generate an average of 6.43 kWh per day for each kW of installed capacity during summer. This output decreases to 4.00 kWh/day in autumn, reaches its lowest point at 2.45 kWh/day in winter, and then rebounds to 5.61 kWh/day in spring. These figures indicate that while solar energy production is viable year-round, there is a significant difference between peak summer and low winter outputs.
Optimal Times for Solar Generation
The most ideal period for solar energy production in Mount Juliet is from late spring through early fall. During these months, longer daylight hours and higher sun angles contribute to increased solar panel efficiency. However, even during the less productive winter months, the panels continue to generate a meaningful amount of electricity, making year-round solar installation worthwhile.
Panel Tilt Optimization
For fixed-panel installations in Mount Juliet, the ideal tilt angle to maximize year-round solar production is 31 degrees facing south. This angle optimizes the panels' exposure to sunlight throughout the year, accounting for seasonal changes in the sun's position and the Earth's elliptical orbit.
Environmental and Weather Considerations
While Mount Juliet's climate is generally conducive to solar energy production, there are some factors that could potentially impact solar panel efficiency:
- Occasional severe weather events, including thunderstorms and tornadoes, which may cause temporary disruptions or potential damage to solar installations.
- Seasonal temperature fluctuations, with hot summers potentially reducing panel efficiency slightly due to heat buildup.
To mitigate these factors, solar installations in Mount Juliet should incorporate robust mounting systems to withstand severe weather, and consider including micro-inverters or power optimizers to minimize the impact of partial shading or panel-level issues. Additionally, ensuring proper ventilation behind the panels can help manage heat-related efficiency losses during the hottest months.
Overall, Mount Juliet's location provides a good balance of solar potential throughout the year, making it a suitable candidate for solar PV installations with appropriate design considerations.
Note: The Northern Temperate Zone extends from 35° latitude North up to 66.5° 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 Mount Juliet
Seasonal solar PV output for Latitude: 36.1868, Longitude: -86.5067 (Mount Juliet, 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 31° South in Mount Juliet, United States
To maximize your solar PV system's energy output in Mount Juliet, United States (Lat/Long 36.1868, -86.5067) throughout the year, you should tilt your panels at an angle of 31° 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 Mount Juliet, 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 Mount Juliet, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 31° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 20° South in Summer | 41° South in Autumn | 51° South in Winter | 29° 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 Mount Juliet, 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 Mount Juliet, 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 Mount Juliet, United States
Mount Juliet, located in Wilson County, Tennessee, is situated in a region characterized by gently rolling hills and shallow valleys typical of the Nashville Basin. The topography around Mount Juliet is relatively mild, with elevations ranging from about 450 to 600 feet above sea level. The landscape is a mix of open fields, wooded areas, and suburban developments. The area surrounding Mount Juliet features a network of small streams and creeks that flow into larger bodies of water, such as the Cumberland River to the north and Percy Priest Lake to the west. These waterways have carved subtle valleys and depressions in the landscape over time, creating a softly undulating terrain.
Potential for Solar PV Development
When considering areas nearby that would be most suited to large-scale solar PV installations, several factors come into play. The ideal locations would be relatively flat, open spaces with minimal shading from trees or structures. Based on the topography of the region, the most suitable areas for solar PV development would likely be found in the following locations: 1. Agricultural fields: The rural areas surrounding Mount Juliet contain numerous open farmlands and pastures. These flat, expansive spaces could potentially be repurposed or partially utilized for solar farms. 2. Cleared hilltops: Some of the higher elevations in the area, particularly those that have been cleared of trees, could offer good potential for solar installations. These sites might benefit from increased sun exposure due to their elevation. 3. Former industrial or commercial sites: Any large, flat areas that were previously used for industrial or commercial purposes but are now vacant could be ideal for solar PV development. These sites often already have the necessary infrastructure in place, such as access roads and proximity to power lines. 4. Areas adjacent to existing power infrastructure: Locations near substations or major power lines could be advantageous for large-scale solar projects, as they would minimize the cost and complexity of connecting to the grid. It's important to note that while the topography around Mount Juliet is generally favorable for solar PV development, other factors such as local zoning regulations, environmental considerations, and community acceptance would also play crucial roles in determining the feasibility of large-scale solar projects in the area.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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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Sunday 2nd of March 2025
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.
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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.




