Girard, Ohio, United States presents a moderately challenging location for year-round solar energy generation, with significant seasonal variations that are typical of its Northern Temperate Zone climate.
Seasonal Solar Performance
The solar energy output at this location shows dramatic seasonal swings. Summer delivers the strongest performance at 6.00 kWh per day per kW of installed capacity, making it an excellent time for solar generation. Spring follows as the second-best season with 5.30 kWh per day per kW, offering nearly comparable output to summer months. Autumn sees a notable decline to 3.24 kWh per day per kW, while winter presents the most challenging conditions with only 1.72 kWh per day per kW. This winter output represents less than 30% of the summer production, highlighting the significant seasonal challenge for consistent year-round energy generation.Optimal Installation Configuration
For maximum year-round production at this Girard, Ohio location, solar panels should be installed at a fixed tilt angle of 35 degrees 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 weighting for actual solar irradiance potential.Local Environmental and Weather Challenges
Several significant factors in the Girard, Ohio area can impede solar energy production and require careful consideration during installation:- Snow accumulation: Winter weather can cause snow to build up on panels, completely blocking energy production
- Ice formation: Freezing conditions can create ice layers that reduce panel efficiency
- Great Lakes weather patterns: Being relatively close to Lake Erie, the area experiences increased cloud cover and precipitation
- Industrial air quality: The region's industrial history may contribute to atmospheric particles that can reduce solar irradiance
Preventative Installation Measures
Several strategies can help maximize solar production despite these local challenges:- Steeper tilt angles: While 35 degrees is optimal for annual output, slightly steeper angles can help snow slide off more easily
- Quality mounting systems: Robust mounting that can handle snow loads and ice expansion
- Regular maintenance access: Design installations to allow safe cleaning and snow removal when necessary
- Panel selection: Choose panels with better low-light performance to handle cloudy conditions more effectively
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 Girard
Seasonal solar PV output for Latitude: 41.154, Longitude: -80.7015 (Girard, 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 Girard, United States
To maximize your solar PV system's energy output in Girard, United States (Lat/Long 41.154, -80.7015) 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 Girard, 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 Girard, 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 |
|---|---|---|---|
| 25° South in Summer | 44° South in Autumn | 55° 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 Girard, 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 Girard, 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 Girard, United States
Topographical Features Around Girard
Girard sits in northwestern Pennsylvania within Erie County, positioned in a region characterized by gently rolling terrain typical of the Great Lakes Plain. The landscape around this area features relatively modest elevation changes, with the terrain gradually sloping toward Lake Erie to the north. The topography consists primarily of low hills and shallow valleys, creating a moderately undulating surface that rises and falls within a fairly narrow elevation range.
The immediate vicinity of Girard displays characteristics common to glaciated landscapes, where ancient ice sheets carved and shaped the land thousands of years ago. This geological history left behind a terrain marked by gentle slopes, rounded hilltops, and broad, shallow depressions. The area lacks dramatic elevation changes or steep mountainous features, instead presenting a landscape that transitions smoothly between higher and lower elevations.
Agricultural fields dominate much of the surrounding countryside, interspersed with patches of deciduous and mixed forests. These farmlands typically occupy the flatter portions of the terrain, while wooded areas often cover the more rolling sections. Small streams and creeks wind through the landscape, creating minor valleys that add subtle variation to the overall topographical pattern.
Optimal Areas for Large-Scale Solar Development
The most suitable locations for large-scale solar photovoltaic installations around Girard would be the expansive agricultural fields that stretch across the flatter portions of the landscape. These areas offer several advantages for solar development, including minimal grading requirements, reduced installation costs, and fewer geographical obstacles to overcome during construction.
South-facing slopes throughout the region present particularly attractive opportunities for solar installations. The gentle gradients typical of this area mean that even sloped terrain remains manageable for large-scale solar arrays while potentially offering improved solar exposure compared to completely flat ground. The moderate nature of these slopes eliminates concerns about excessive steepness that might complicate installation or maintenance activities.
Areas currently used for row crop agriculture represent prime candidates for solar development, as these locations already feature cleared land with established access routes. The relatively open nature of the agricultural landscape also minimizes shading concerns from trees or other tall vegetation, which could otherwise reduce the effectiveness of solar installations.
The terrain's gentle undulations actually work in favor of solar development, as slight variations in elevation can help optimize panel positioning and reduce the visual impact of large installations. Unlike regions with extreme topographical features, the moderate landscape around Girard allows for efficient use of available land while maintaining reasonable construction and maintenance costs for solar projects.
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: Tuesday 12th of August 2025
Last Updated: Tuesday 12th 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.




