Hopkinsville, Kentucky offers moderately good conditions for solar energy generation throughout the year, though like most locations in the Northern Temperate Zone, it experiences significant seasonal variation in solar output.

Seasonal Solar Performance

Summer represents the peak solar generation period at this location, producing 6.47 kWh per day for each kilowatt of installed solar capacity. This high output reflects the longer days and more direct sunlight typical of the summer months. Spring follows as the second-best season with 5.65 kWh per day per kW, making it an excellent time for solar energy production. Autumn sees a notable decline to 4.09 kWh per day per kW as daylight hours shorten and the sun's angle becomes less favorable. Winter presents the most challenging conditions, dropping to just 2.48 kWh per day per kW, which is less than half the summer output. For anyone installing a fixed solar panel system at this location, the optimal tilt angle is 32 degrees facing south to maximize total year-round energy production.

Local Factors Affecting Solar Production

Several environmental and weather factors in the Hopkinsville area can impact solar energy generation:

• Frequent cloud cover and overcast skies, particularly during winter months
• High humidity levels that can reduce solar panel efficiency
• Severe weather events including thunderstorms, hail, and occasional ice storms
• Seasonal pollen and dust accumulation on panel surfaces
• Potential shading from deciduous trees during leaf-covered months

Preventative Measures for Better Performance

To maximize solar energy production despite these challenges, several installation strategies can help. Regular cleaning schedules become particularly important during pollen season and after dust storms to maintain optimal panel efficiency. Installing panels with adequate spacing allows for proper air circulation, which helps combat humidity-related efficiency losses. Choosing high-quality panels with good low-light performance can help maintain decent output during cloudy periods. Proper mounting systems designed to withstand severe weather, including reinforced frames and secure anchoring, protect against storm damage and hail. Strategic placement away from large deciduous trees or trimming nearby vegetation reduces shading issues. Installing monitoring systems allows for quick identification of performance problems, enabling prompt maintenance when needed. Overall, while Hopkinsville experiences typical challenges for solar installations in this climate zone, proper planning and maintenance can help ensure reliable solar energy production throughout the year.

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 Hopkinsville

Seasonal solar PV output for Latitude: 36.8633, Longitude: -87.4848 (Hopkinsville, 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 32° South in Hopkinsville, United States

To maximize your solar PV system's energy output in Hopkinsville, United States (Lat/Long 36.8633, -87.4848) 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.

Seasonally adjusted solar panel tilt angles for Hopkinsville, 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 Hopkinsville, 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
21° South in Summer	42° South in Autumn	52° 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 Hopkinsville, 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 Hopkinsville, 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 Hopkinsville, United States

Topographical Features of the Hopkinsville Region

The topography surrounding Hopkinsville, Kentucky is characterized by gently rolling hills and relatively flat agricultural plains that are typical of the Western Kentucky Coal Field region. This area sits within the broader Pennyrile region, which forms part of the larger Interior Low Plateaus physiographic province. The landscape features modest elevation changes, with most areas ranging from approximately 400 to 600 feet above sea level. The terrain around Hopkinsville consists primarily of undulating farmland interspersed with wooded areas and creek valleys. The Little River flows through the southern portion of the county, creating some minor topographical variation with its associated floodplains and gentle valley slopes. The overall landscape is dominated by sedimentary rock formations that have been weathered over time, creating the characteristic rolling topography that defines much of western Kentucky. Agricultural use has shaped much of the visible landscape, with large open fields of corn, soybeans, tobacco, and other crops creating expansive areas of relatively flat or gently sloping terrain. These agricultural areas are punctuated by farm buildings, rural residences, and patches of deciduous forest that tend to occupy the steeper slopes and less suitable farming areas.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations around Hopkinsville would be the extensive agricultural plains and gently rolling fields that characterize the region. These areas offer several advantages for solar development, including minimal slope variations that reduce installation complexity and costs, large contiguous parcels of land that can accommodate utility-scale projects, and relatively few obstructions such as tall trees or buildings. The flat to gently rolling agricultural areas to the north and east of Hopkinsville present particularly favorable conditions for solar development. These locations typically feature open exposure with minimal shading from topographical features, and the existing agricultural use means the land is already cleared and accessible. The gentle slopes in these areas, when they exist, can actually be beneficial for solar installations as they can improve drainage and optimize panel orientation. Areas near major transportation corridors would also be advantageous for solar development due to easier access for construction equipment and maintenance vehicles. The relatively stable soil conditions typical of the region's agricultural areas provide good foundation support for solar mounting systems, while the generally open terrain allows for efficient layout of solar arrays with minimal grading requirements. The creek valleys and more heavily wooded areas would be less suitable for large-scale solar development due to potential shading issues, irregular terrain, and the environmental considerations associated with clearing established forest areas. Similarly, areas with steeper slopes or significant elevation changes would present greater installation challenges and potentially reduced efficiency due to less optimal panel positioning.

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.