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Flag of United StatesSolar PV Analysis of Eighty Four, United States

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

Eighty Four, Pennsylvania, located at 40.1817° North, -80.1331° West in the Northern Temperate Zone, offers varying potential for solar energy generation throughout the year. This location experiences significant seasonal fluctuations in solar electricity production.

Seasonal Solar Production

Solar panels in Eighty Four demonstrate strong performance during summer months, generating approximately 6.08 kWh per day for each kilowatt of installed capacity. Spring follows as the second most productive season, yielding about 5.32 kWh daily per kilowatt. Production drops considerably in autumn to 3.40 kWh per day, while winter sees the lowest output at just 1.78 kWh daily per kilowatt of installed capacity.

The substantial difference between summer and winter production (more than three times higher in summer) indicates that this location experiences typical seasonal solar variations for the northern United States. Peak generation occurs from late spring through early fall, with May through September being particularly favorable months for solar energy harvesting.

Optimal Panel Installation

For fixed solar panel installations in Eighty Four, the ideal tilt angle to maximize year-round energy production is 34 degrees facing South. This angle optimizes the annual solar capture by balancing seasonal variations in the sun's position throughout the year.

Environmental Considerations

Several environmental factors could potentially impact solar production at this location:

  • Snow accumulation during winter months can significantly reduce output by covering panels and blocking sunlight. Installing panels at the recommended 34-degree tilt helps with natural snow shedding, while periodic snow removal may be necessary during heavy snowfall events.
  • Western Pennsylvania experiences approximately 160 cloudy days annually, which can reduce solar efficiency. Using high-efficiency panels designed for diffuse light conditions can help mitigate this challenge.
  • Tree coverage in this largely rural area may cast shadows on panels. A thorough site assessment to identify potential shading issues and strategic panel placement or selective trimming can prevent production losses.
  • Dust and pollen accumulation, particularly during spring and summer, may gradually reduce panel efficiency. Implementing a regular cleaning schedule can maintain optimal performance.

Despite these challenges, with proper installation at the optimal angle and appropriate maintenance, solar PV systems in Eighty Four can provide reliable renewable energy, particularly during the productive spring and summer months when energy production is more than three times higher than winter levels.

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 Eighty Four

Seasonal solar PV output for Latitude: 40.1817, Longitude: -80.1331 (Eighty Four, 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 6.08kWh/day in Summer.
Autumn
Average 3.40kWh/day in Autumn.
Winter
Average 1.78kWh/day in Winter.
Spring
Average 5.32kWh/day in Spring.

 

Ideally tilt fixed solar panels 34° South in Eighty Four, United States

To maximize your solar PV system's energy output in Eighty Four, United States (Lat/Long 40.1817, -80.1331) throughout the year, you should tilt your panels at an angle of 34° 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: 40.1817, Longitude: -80.1331, the ideal angle to tilt panels is 34° South

Seasonally adjusted solar panel tilt angles for Eighty Four, 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 Eighty Four, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 34° South tilt angle throughout the year.

Overall Best Summer Angle Overall Best Autumn Angle Overall Best Winter Angle Overall Best Spring Angle
24° South in Summer 44° South in Autumn 55° South in Winter 33° 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 Eighty Four, United States as follows: In Summer, set the angle of your panels to 24° facing South. In Autumn, tilt panels to 44° facing South for maximum generation. During Winter, adjust your solar panels to a 55° angle towards the South for optimal energy production. Lastly, in Spring, position your panels at a 33° angle facing South to capture the most solar energy in Eighty Four, 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 Eighty Four, 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 Eighty Four, 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 Eighty Four, United States

The landscape surrounding Eighty Four, Pennsylvania presents a varied topographical profile characteristic of southwestern Pennsylvania's portion of the Appalachian Plateau. Located in Washington County approximately 25 miles southwest of Pittsburgh, Eighty Four sits within a region defined by rolling hills, shallow valleys, and moderate elevation changes. The terrain features numerous small streams and creeks that have carved gentle depressions throughout the area, creating a patchwork of ridges and valleys. The elevation around Eighty Four generally ranges between 1,000 and 1,300 feet above sea level, with gradual transitions between higher and lower points rather than dramatic cliffs or steep mountainsides. This undulating landscape was shaped primarily by glacial activity and subsequent erosion patterns over thousands of years. The soil composition tends toward clay and silt loams, with underlying bedrock of sedimentary origin including sandstone, shale, and limestone.

Solar PV Potential Areas

For large-scale solar photovoltaic installations, several nearby areas offer promising characteristics. The most suitable locations would be found on south-facing slopes and ridgetops that receive consistent sunlight exposure throughout the day. These elevated positions typically experience less shadowing from surrounding terrain features and vegetation. Specifically, the more open agricultural lands to the south and southwest of Eighty Four present favorable conditions for solar development. These areas feature gentler slopes, fewer forested sections, and existing land use patterns that might more readily accommodate large installations. The relatively flat plateaus along some of the higher elevations provide natural clearings where solar arrays could be positioned with minimal grading requirements. The northeastern sections of Washington County also contain several reclaimed mining sites and brownfields that could be repurposed for solar energy production. These previously disturbed lands often have reduced ecological value and fewer competing land uses, making them potentially ideal for renewable energy development. While the region doesn't feature vast, entirely flat expanses like those found in America's desert southwest or Great Plains, the moderate hills around Eighty Four can still support significant solar installations when properly engineered. Modern mounting systems can be adapted to various slope conditions, and the relatively stable soil conditions throughout much of the area would support the necessary infrastructure with standard foundation techniques. The network of rural roads and proximity to electrical transmission infrastructure further enhances the viability of certain locations, particularly those closer to existing substations and high-voltage lines that could accept and distribute the generated power with minimal new construction requirements.

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 Eighty Four, United States
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Tuesday 22nd of April 2025
Last Updated: Wednesday 3rd of September 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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