Quarryville, Pennsylvania, located in the Northern Temperate Zone, offers a variable environment for solar energy generation throughout the year. This location experiences significant seasonal fluctuations in solar output, which impacts the overall efficiency of solar PV systems.
Seasonal Solar Performance
Summer stands out as the most productive season, with an impressive daily output of 6.43 kWh per kW of installed solar capacity. Spring follows closely behind, generating 5.64 kWh/day. However, the colder months see a notable decline in energy production. Autumn yields 3.77 kWh/day, while winter experiences the lowest output at 2.26 kWh/day.
These figures highlight that Quarryville's solar potential is strongest from late spring through early fall. During this period, longer days and higher sun angles contribute to increased energy production. Conversely, the shorter days and lower sun angles of late fall and winter result in reduced solar output.
Optimizing Solar Panel Installation
To maximize year-round solar energy production in Quarryville, fixed solar panels should be installed at a tilt angle of 35 degrees facing south. This optimal angle helps balance energy capture across seasons, compensating for the sun's changing position throughout the year.
Environmental Considerations
While Quarryville's location is generally favorable for solar energy, there are some environmental factors to consider:
- Snow accumulation in winter can temporarily reduce panel efficiency.
- Occasional cloudy or overcast days, particularly in winter and early spring, may impact production.
To mitigate these issues, consider installing panels at a steeper angle to encourage snow sliding off and using high-efficiency panels that perform better in low-light conditions. Regular maintenance, including snow removal and panel cleaning, can also help maintain optimal performance.
In conclusion, while Quarryville experiences seasonal variations in solar output, its overall solar potential remains good. With proper installation and maintenance, solar PV systems can provide a significant portion of energy needs throughout the year, with peak production during the warmer 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 Quarryville
Seasonal solar PV output for Latitude: 39.8819, Longitude: -76.1478 (Quarryville, 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 35° South in Quarryville, United States
To maximize your solar PV system's energy output in Quarryville, United States (Lat/Long 39.8819, -76.1478) throughout the year, you should tilt your panels at an angle of 35° 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 Quarryville, 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 Quarryville, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 35° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 23° South in Summer | 44° South in Autumn | 55° South in Winter | 33° 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 Quarryville, 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 Quarryville, United States.
Our calculation method
- Solar Position:
We determine the Sun's position on the Winter solstice using the location's latitude and solar declination. - Shadow Projection:
We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle. - 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 Quarryville, United States
The topography around Quarryville, Pennsylvania, is characterized by gently rolling hills and shallow valleys typical of the Piedmont region. This area, located in the southeastern part of the state, features a mix of farmland, wooded areas, and small streams. The landscape is generally undulating, with elevations ranging from about 400 to 700 feet above sea level. The terrain surrounding Quarryville is part of the larger Lancaster Valley, which is known for its fertile soil and agricultural productivity. The area's topography has been shaped over millions of years by the erosion of ancient rock formations, resulting in a landscape of low hills, broad valleys, and meandering waterways.
Potential for Large-Scale Solar PV
When considering areas nearby that would be most suited to large-scale solar photovoltaic (PV) installations, several factors come into play. The gently rolling terrain around Quarryville offers some advantages for solar development, as it provides opportunities for south-facing slopes that can maximize sun exposure throughout the day. Ideal locations for large-scale solar PV in this region would be open, relatively flat areas with minimal shading from trees or other obstructions. Former agricultural fields or pastures that are no longer in active use could be particularly well-suited for solar development. These areas often have the advantage of being already cleared and having good access to existing roads and infrastructure. Areas to the south and southeast of Quarryville may be especially promising for solar PV installations, as they tend to have slightly more open terrain and fewer forested areas. However, it's important to note that any specific site selection would require detailed analysis of factors such as local zoning regulations, proximity to electrical grid infrastructure, and environmental considerations. While the rolling topography of the region can be advantageous for solar energy capture, care must be taken to avoid areas with steep slopes or those prone to erosion. Additionally, the preservation of prime agricultural land is a consideration in this region, so solar developers would need to balance energy production goals with the community's agricultural heritage and current land use patterns.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
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Thursday 12th of December 2024
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.
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.




