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Flag of United StatesSolar PV Analysis of Mount Washington, United States

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

Mount Washington, Kentucky, located in the Northern Temperate Zone at coordinates 38.0463, -85.5608, presents a moderately favorable location for year-round solar energy generation, though with significant seasonal variations that potential solar installers should carefully consider.

Seasonal Solar Performance

The location shows strong seasonal differences in solar energy production. Summer delivers the highest output at 6.22 kWh per day per kW of installed solar capacity, making it the peak production season. Spring follows as the second-best performing season with 5.51 kWh per day per kW, offering nearly comparable energy generation to summer months. Autumn production drops considerably to 3.86 kWh per day per kW, while winter presents the most challenging conditions with only 2.19 kWh per day per kW of installed capacity. This represents nearly a three-fold difference between peak summer and winter production levels.

Optimal Installation Configuration

For fixed panel installations at this Mount Washington location, the ideal angle to tilt solar panels is 33 degrees facing south to maximize total year-round energy production. This angle is calculated by analyzing daily solar elevation angles throughout the year, determining optimal panel positioning, and weighting these calculations using solar irradiance data while accounting for Earth's elliptical orbit.

Local Environmental and Weather Challenges

Several environmental and weather factors in the Mount Washington, Kentucky area can significantly impact solar energy production:
  • High humidity and frequent cloud cover, particularly during summer months when thunderstorms are common
  • Ice and snow accumulation during winter months that can block panels
  • Seasonal haze and air quality issues that can reduce solar irradiance
  • Potential for severe weather including hail storms and high winds

Preventative Measures for Enhanced Production

To maximize solar energy output despite these local challenges, several installation strategies should be considered:
  • Install panels with adequate spacing and ventilation to prevent moisture buildup and allow for natural cleaning by rain
  • Use mounting systems that allow panels to be positioned at steeper angles to facilitate snow and ice shedding
  • Select high-quality panels with anti-reflective coatings and superior low-light performance
  • Implement robust mounting systems designed to withstand local wind loads and potential hail damage
  • Consider micro-inverters or power optimizers to minimize impact when individual panels are partially shaded or soiled
Regular maintenance becomes particularly important in this climate, including periodic cleaning to remove accumulated dust, pollen, and organic matter that can reduce panel efficiency. The significant winter production decrease means that battery storage or grid-tie systems become especially valuable for maintaining consistent energy availability year-round.

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 Washington

Seasonal solar PV output for Latitude: 38.0463, Longitude: -85.5608 (Mount Washington, 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 6.22kWh/day in Summer.
Autumn
Average 3.86kWh/day in Autumn.
Winter
Average 2.19kWh/day in Winter.
Spring
Average 5.51kWh/day in Spring.

 

Ideally tilt fixed solar panels 33° South in Mount Washington, United States

To maximize your solar PV system's energy output in Mount Washington, United States (Lat/Long 38.0463, -85.5608) 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.

The sun
At Latitude: 38.0463, Longitude: -85.5608, the ideal angle to tilt panels is 33° South

Seasonally adjusted solar panel tilt angles for Mount Washington, 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 Washington, 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
22° South in Summer 42° South in Autumn 53° South in Winter 31° 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 Mount Washington, United States as follows: In Summer, set the angle of your panels to 22° facing South. In Autumn, tilt panels to 42° facing South for maximum generation. During Winter, adjust your solar panels to a 53° angle towards the South for optimal energy production. Lastly, in Spring, position your panels at a 31° angle facing South to capture the most solar energy in Mount Washington, 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 Mount Washington, 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 Washington, 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 Mount Washington, United States

Topographical Features of the Mount Washington Area

Mount Washington in Kentucky sits within the distinctive rolling hills and karst landscape characteristic of the Bluegrass State. The terrain around this location features gently undulating topography with elevations that vary moderately across the region. The area is part of the broader Louisville metropolitan region, where the landscape transitions from the flatter Ohio River valley to the more pronounced hills of central Kentucky. The immediate vicinity displays typical Kentucky karst topography, with limestone bedrock creating a landscape dotted with sinkholes, small ridges, and shallow valleys. These geological features result in a terrain that rolls and dips in relatively gentle patterns, though some areas can show more pronounced elevation changes. The region's topography has been shaped by centuries of water erosion working on the underlying limestone, creating the characteristic undulating surface that defines much of central Kentucky.

Drainage Patterns and Water Features

The area's drainage patterns follow the natural contours of the rolling terrain, with numerous small creeks and tributaries flowing toward larger waterways. These waterways have carved modest valleys and hollows throughout the region, creating a network of drainage channels that influence the local topography. The presence of karst geology means that some water features may disappear underground through sinkholes and reappear elsewhere, adding complexity to the surface water patterns.

Optimal Areas for Large-Scale Solar Development

For large-scale solar photovoltaic installations, the most suitable areas around Mount Washington would be the broader, flatter ridge tops and gently sloping hillsides with southern exposure. These elevated areas typically offer the best combination of relatively level ground and favorable solar orientation. The rolling nature of the terrain provides numerous south-facing slopes that could accommodate solar arrays while minimizing the need for extensive grading. The wider valleys and gentler hillsides present the most practical locations for utility-scale solar development. These areas offer sufficient contiguous space for large installations while avoiding the steeper slopes and more irregular terrain found in some parts of the region. Agricultural land on the broader ridges and in the wider valleys would be particularly well-suited for solar development, as these areas typically have fewer trees and obstacles. Areas to avoid for large-scale solar would include the steeper hillsides, narrow valleys, and locations with significant karst features like large sinkholes. The heavily forested sections, which are common throughout the region, would require extensive clearing and might be better preserved for their ecological value. The lowest-lying areas near creeks and drainage channels should also be avoided due to potential flooding concerns and the likelihood of encountering wetland restrictions. The ideal solar sites would be those offering gentle southern slopes with gradients suitable for standard mounting systems, adequate road access for construction and maintenance, and proximity to electrical infrastructure for grid connection. The rolling topography actually provides advantages over completely flat terrain by offering natural drainage and the ability to optimize panel orientation on south-facing slopes.

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 Mount Washington, United States
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Thursday 31st of July 2025
Last Updated: Friday 8th of August 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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