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Flag of United StatesSolar PV Analysis of Cadiz, United States

Graph of hourly avg kWh electricity output per kW of Solar PV installed in Cadiz, United States (by season)

Cadiz, Kentucky, United States offers varying potential for solar PV energy generation throughout the year. This location in the Northern Temperate Zone experiences significant seasonal fluctuations in solar electricity production.

Seasonal Solar Performance

Solar panels in Cadiz produce their highest output during summer months, generating approximately 6.48kWh per day for each kilowatt of installed capacity. Spring follows as the second most productive season with 5.64kWh/day per installed kilowatt. Production decreases considerably in autumn (4.09kWh/day) and reaches its lowest point in winter, dropping to just 2.47kWh/day per kilowatt of installed capacity.

The substantial difference between summer and winter production (a reduction of approximately 62% from peak to lowest output) indicates that while Cadiz receives good solar radiation for part of the year, the location is not ideal for consistent year-round solar generation.

Optimal Panel Installation

For fixed solar panel installations in Cadiz, the ideal tilt angle to maximize year-round energy production is 32 degrees facing South. This angle represents the mathematically optimal position to capture the most solar energy across all seasons, accounting for the Earth's elliptical orbit and the specific latitude of this location.

Environmental and Weather Considerations

Several factors could potentially impact solar production in Cadiz:

  • Seasonal precipitation and cloud cover, particularly during winter months, may further reduce the already diminished winter production
  • Occasional severe weather events including thunderstorms, hail, and potential tornado activity in the region could pose physical risks to installations
  • Deciduous tree coverage common in Kentucky could create seasonal shading issues
  • Dust and pollen accumulation, especially during spring and summer, may reduce panel efficiency

Preventative Measures

To maximize solar production despite these challenges, consider implementing these protective strategies:

  • Install panels with durable tempered glass and sturdy mounting systems rated for local wind conditions
  • Implement regular cleaning schedules, particularly after pollen season and during dry, dusty periods
  • Ensure proper tree management to prevent shading, especially for winter sun angles when production is already at its lowest
  • Consider micro-inverters or power optimizers to minimize the impact of partial shading on overall system performance
  • Plan for adequate system sizing to compensate for the significant winter production decrease

While Cadiz doesn't offer ideal year-round solar conditions, proper system design and maintenance can still make solar PV a viable energy option, particularly when designed to maximize production during the highly productive summer and spring months.

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 Cadiz

Seasonal solar PV output for Latitude: 36.865, Longitude: -87.8353 (Cadiz, 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:

Summer
Average 6.48kWh/day in Summer.
Autumn
Average 4.09kWh/day in Autumn.
Winter
Average 2.47kWh/day in Winter.
Spring
Average 5.64kWh/day in Spring.

 

Ideally tilt fixed solar panels 32° South in Cadiz, United States

To maximize your solar PV system's energy output in Cadiz, United States (Lat/Long 36.865, -87.8353) throughout the year, you should tilt your panels at an angle of 32° 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.

The sun
At Latitude: 36.865, Longitude: -87.8353, the ideal angle to tilt panels is 32° South

Seasonally adjusted solar panel tilt angles for Cadiz, 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 Cadiz, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 32° 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 52° South in Winter 29° South in Spring

Assuming you can modify the tilt angle of your solar PV panels throughout the year, you can optimize your solar generation in Cadiz, United States as follows: In Summer, set the angle of your panels to 20° facing South. In Autumn, tilt panels to 41° facing South for maximum generation. During Winter, adjust your solar panels to a 52° angle towards the South for optimal energy production. Lastly, in Spring, position your panels at a 29° angle facing South to capture the most solar energy in Cadiz, United States.

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 Cadiz, 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 Cadiz, 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.






Please enter information above to calculate panel spacing.

Topography for solar PV around Cadiz, United States

The topography around Cadiz, Kentucky, located in Trigg County in the western part of the state, is characterized by gently rolling hills and modest elevation changes typical of the Pennyroyal Plateau region. This area sits between the flat Mississippi floodplains to the west and the more rugged terrain of central Kentucky to the east. The landscape features a mix of agricultural fields, scattered woodlands, and numerous small streams and creeks that feed into nearby Lake Barkley and Kentucky Lake, both of which are major recreational water bodies in the region. The elevation around Cadiz generally ranges between 400 and 600 feet above sea level, with gradual slopes rather than steep inclines dominating the terrain. The area has been shaped by years of erosion, creating a somewhat undulating landscape. The soil composition tends toward clay and loam, with limestone bedrock underlying much of the region—a common geological feature in western Kentucky.

Optimal Areas for Solar PV Development

For large-scale solar photovoltaic (PV) installations, the most suitable locations near Cadiz would be the relatively flat, open agricultural lands that surround the town. Specifically, the areas to the south and west of Cadiz offer advantageous conditions for solar development due to several factors: The southern portions of Trigg County feature more extensive flat terrain with fewer tree stands, providing unobstructed exposure to sunlight throughout the day. These agricultural plateaus offer the necessary space for large arrays while requiring minimal grading and site preparation. Areas along major roadways such as Interstate 24, which runs just east of Cadiz, present practical advantages for solar development. These locations combine favorable topography with existing infrastructure access, making construction and grid connection potentially more economical. The lands between Cadiz and Lake Barkley to the west also present opportunities, where gently sloping fields face predominantly southern exposures—ideal for maximizing solar collection throughout the year. These areas typically have good drainage characteristics, which helps minimize flooding risks to solar infrastructure. It's worth noting that while the entire region receives ample sunlight for solar power generation, the specific micrositing of installations would need to account for local variations in slope aspect, potential shading from tree lines, and proximity to existing electrical transmission infrastructure. The region's modest topographical relief generally means that shading from surrounding terrain is minimal, making the primary considerations for site selection related to land availability, grid connection possibilities, and avoiding areas prone to seasonal flooding along the tributaries that feed into the nearby lakes.

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

Article: Solar PV Analysis of Cadiz, United States
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Wednesday 25th of June 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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