Ellwood City, Pennsylvania presents a moderately suitable location for solar energy generation, though it faces typical challenges associated with its Northern Temperate Zone climate and geographic position at latitude 40.8617, longitude -80.2865.
Seasonal Solar Production Performance
The solar energy output at this location varies significantly throughout the year, reflecting the natural patterns of sunlight availability in Pennsylvania's climate. Summer provides the strongest performance at 6.09 kWh per day per kW of installed solar capacity, making it the peak season for energy generation. Spring follows as the second-best performing season with 5.32 kWh per day per kW, offering nearly comparable output to summer months. Autumn shows a notable decline in production at 3.39 kWh per day per kW, while winter presents the most challenging conditions with only 1.80 kWh per day per kW of installed capacity. This dramatic seasonal variation means that summer produces more than three times the energy output of winter months.Optimal Installation Configuration
For maximum year-round solar energy production at Ellwood City, fixed solar panels should be installed at a 35-degree tilt angle facing south. This angle has been calculated to optimize total annual energy output by accounting for the sun's changing position throughout the year and the area's specific latitude.Environmental and Weather Challenges
Several local factors can significantly impact solar production in Ellwood City and require careful consideration during installation:- Snow accumulation: Pennsylvania winters bring substantial snowfall that can completely block solar panels, eliminating energy production until cleared
- Cloud cover and precipitation: The region experiences frequent overcast conditions, particularly during autumn and winter months
- Atmospheric haze: Industrial activity in western Pennsylvania can create air quality issues that reduce solar irradiance
- Tree coverage: The area's abundant deciduous and evergreen forests can create shading issues for residential installations
Preventative Installation Measures
To maximize energy production despite these challenges, several installation strategies prove effective. Panels should be mounted at steeper angles when possible, as the recommended 35-degree tilt helps snow slide off more readily than flatter installations. Adequate spacing between panel rows prevents snow buildup from one row shading another. Careful site selection becomes crucial, requiring thorough shade analysis throughout different seasons to account for both evergreen trees and the varying sun angles. Installing panels higher off the ground improves air circulation and reduces the impact of ground-level snow reflection and accumulation. Regular maintenance scheduling proves essential, particularly during winter months when snow removal may be necessary to restore production. Anti-reflective coatings on panels can help maximize energy capture during periods of reduced sunlight, while micro-inverters or power optimizers can minimize the impact when individual panels become shaded or snow-covered. The location's moderate solar potential means that while year-round solar generation is certainly viable in Ellwood City, property owners should expect significant seasonal variations in energy output and plan accordingly for reduced winter production.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 Ellwood City
Seasonal solar PV output for Latitude: 40.8617, Longitude: -80.2865 (Ellwood City, 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 Ellwood City, United States
To maximize your solar PV system's energy output in Ellwood City, United States (Lat/Long 40.8617, -80.2865) 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 Ellwood City, 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 Ellwood City, 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 |
|---|---|---|---|
| 24° South in Summer | 45° South in Autumn | 56° South in Winter | 34° 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 Ellwood City, 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 Ellwood City, 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 Ellwood City, United States
Topographical Features of Ellwood City and Surrounding Region
Ellwood City sits in the gently rolling landscape of western Pennsylvania, positioned along the banks of the Connoquenessing Creek in Lawrence County. The terrain around this small borough is characterized by moderate elevation changes typical of the Appalachian Plateau region, with the land gradually rising and falling in undulating hills that rarely exceed steep gradients. The immediate area features a mix of river valleys, low ridges, and relatively flat agricultural fields that have been shaped by both glacial activity and centuries of water erosion. The Connoquenessing Creek valley creates the most significant topographical feature in the immediate vicinity, carving a shallow but distinct channel through the landscape as it flows northward toward the Beaver River. This creek valley provides some of the flattest terrain in the area, though much of this low-lying land is subject to occasional flooding and may not be ideal for large infrastructure projects. The surrounding hillsides rise gently from the valley floor, typically gaining elevation at gradual slopes that make them accessible for development while still providing good drainage. Moving outward from Ellwood City, the topography becomes more varied but remains relatively gentle compared to the steeper terrain found further east in Pennsylvania. The region features a patchwork of agricultural fields, wooded areas, and former industrial sites, many of which occupy relatively level ground or gentle slopes. The soil composition varies from rich alluvial deposits near waterways to clay and shale-based soils on higher ground, reflecting the area's geological history as part of the ancient Appalachian mountain-building process.Optimal Areas for Large-Scale Solar Development
The most promising locations for substantial solar photovoltaic installations around Ellwood City would be the expansive agricultural fields that stretch across the gently sloping hillsides to the south and west of the borough. These areas offer several advantages including relatively flat to gently sloping terrain that faces favorable directions, minimal shading from trees or structures, and existing access roads that could support construction and maintenance activities. Many of these agricultural parcels span dozens of acres in continuous blocks, providing the space necessary for utility-scale solar farms. The elevated plateaus and broad ridgetops found within a few miles of Ellwood City present another excellent opportunity for solar development. These areas typically feature consistent elevation with minimal variation, good natural drainage, and fewer conflicts with existing residential development. The higher elevation also means less potential for fog accumulation and better air circulation, which can improve panel performance. Several of these ridgetop areas are currently used for agriculture or remain undeveloped, making them potentially available for energy projects. Former industrial sites and brownfields in the broader region could also serve as valuable locations for solar installations. The legacy of steel production and manufacturing in western Pennsylvania has left behind numerous large, relatively flat parcels that may be well-suited for renewable energy development. These sites often have existing electrical infrastructure nearby and may face fewer regulatory hurdles for conversion to energy production use. Areas to avoid would include the steeper hillsides with northern exposures, heavily forested regions where tree clearing would be environmentally problematic, and the flood-prone bottomlands near the Connoquenessing Creek and other waterways. The rolling nature of much of the terrain means that careful site selection will be important to avoid locations where hills or tree lines might create significant shading issues during certain times of the year.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: Wednesday 30th 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.
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.




