Harned, Kentucky offers moderate solar energy potential for year-round electricity generation through solar photovoltaic (PV) systems. Located in the Northern Temperate Zone, this area experiences significant seasonal variation in solar output that homeowners and businesses should understand when considering solar installation.

Seasonal Solar Performance

The solar energy production at Harned varies considerably throughout the year. Summer provides the strongest performance at 6.46 kWh per day per kW of installed solar capacity, making it nearly three times more productive than winter months. Spring follows as the second-best season with 5.55 kWh per day per kW, while autumn drops to 3.99 kWh per day per kW. Winter presents the most challenging period with only 2.28 kWh per day per kW. This seasonal pattern means that solar systems in Harned will generate most of their annual electricity during the warmer months from late spring through early fall. The dramatic difference between summer and winter production is typical for locations at this latitude and should factor into energy storage or grid-tie considerations.

Optimal Panel Installation

For maximum year-round energy production at this location, solar panels should be installed at a fixed tilt angle of 33 degrees facing south. This angle has been calculated to optimize total annual solar output by accounting for the sun's changing position throughout the year and weighting for the varying solar potential across seasons.

Local Factors Affecting Solar Production

Several environmental and weather factors in the Harned area can impact solar energy production:

• Humidity and haze: Kentucky's humid subtropical climate can create atmospheric haze that reduces solar irradiance reaching panels
• Frequent cloud cover: The region experiences regular cloud formations, particularly during spring and summer thunderstorm seasons
• Tree coverage: The heavily forested landscape of Kentucky means many properties may have significant shading from surrounding vegetation
• Snow and ice accumulation: Winter weather can temporarily block panels with snow or ice coverage

Preventative Measures for Better Performance

Several installation strategies can help maximize solar production despite these challenges:

• Strategic site selection: Choose installation locations with minimal tree shading, particularly avoiding shade during peak sun hours
• Regular cleaning: Establish a maintenance schedule to remove dust, pollen, and debris that accumulates more readily in humid climates
• Proper mounting: Install panels with adequate spacing for air circulation to prevent moisture buildup and improve cooling efficiency
• Snow management: Consider steeper mounting angles in areas prone to heavy snow, or install heating elements for critical applications

Despite the seasonal variations and local challenges, Harned's solar potential remains viable for reducing electricity costs and environmental impact, particularly when systems are properly designed and maintained to address regional conditions.

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 Harned

Seasonal solar PV output for Latitude: 37.7517, Longitude: -86.4136 (Harned, 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 33° South in Harned, United States

To maximize your solar PV system's energy output in Harned, United States (Lat/Long 37.7517, -86.4136) throughout the year, you should tilt your panels at an angle of 33° 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 Harned, 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 Harned, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 33° 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	53° South in Winter	30° 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 Harned, 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 Harned, 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 Harned, United States

Topographical Features of the Harned Region

The area surrounding Harned, Kentucky sits within the Western Kentucky Coal Field region, characterized by gently rolling hills and modest elevation changes typical of the Appalachian Plateau's western edge. The terrain features a mix of low ridges and shallow valleys, with elevations generally ranging from around 400 to 600 feet above sea level. This creates a landscape of moderate undulation rather than dramatic topographical extremes. The region displays the classic characteristics of dissected plateau topography, where streams and rivers have carved relatively shallow valleys through sedimentary rock layers over geological time. The Ohio River lies to the north, serving as a major geographical boundary and contributing to the area's drainage patterns. Smaller tributaries and creeks flow through the landscape, creating gentle valley systems that break up the otherwise rolling terrain. Agricultural land use dominates much of the surrounding countryside, with fields and pastures occupying both valley floors and hilltop areas. Forested sections remain scattered throughout the region, particularly along steeper slopes and creek beds where farming proves less practical. The soil composition reflects the underlying geology of sandstone, shale, and limestone formations common to this part of Kentucky.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations in the Harned vicinity would be the relatively flat to gently sloping agricultural areas that occupy the broader valley floors and plateau tops. These areas offer several advantages including minimal grading requirements, reduced installation costs, and easier access for construction and maintenance equipment. South-facing slopes with gradual inclines present particularly attractive opportunities, as they naturally optimize panel orientation while maintaining manageable terrain conditions. The agricultural fields that currently occupy these positions could potentially be converted or shared with solar installations through agrivoltaic approaches. Areas near existing electrical infrastructure would prove most economical for development, particularly locations with proximity to transmission lines or substations. The relatively open nature of much farmland in the region means fewer obstacles from existing structures or mature tree coverage that might create shading issues. Valley floor locations offer the advantage of larger contiguous areas suitable for utility-scale installations, while the gentle ridgetop areas provide good exposure and minimal interference from surrounding terrain features. The key consideration involves balancing optimal solar exposure with practical factors such as grid connectivity, land availability, and minimal environmental impact on the region's agricultural and natural systems.

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.