Cleghorn, Iowa, located in the United States, presents a mixed scenario for year-round solar energy generation via photovoltaic (PV) systems. Situated in the Northern Temperate Zone, this location experiences significant seasonal variations in solar energy production.
Seasonal Solar Performance
Summer stands out as the most productive season, with an impressive 7.01 kWh per day for each kilowatt of installed solar capacity. Spring follows as the second-best season, yielding 5.36 kWh/day. However, the colder months see a substantial drop in energy output, with autumn producing 3.61 kWh/day and winter falling to a mere 2.61 kWh/day.
These figures highlight the stark contrast between the warm and cold seasons, indicating that Cleghorn's solar potential is heavily skewed towards the summer months. This seasonal disparity suggests that while solar energy can be a valuable resource, it may require supplementary power sources or energy storage solutions to maintain consistent year-round energy supply.
Optimal Panel Installation
To maximize year-round solar energy production in Cleghorn, fixed solar panels should be installed at a tilt angle of 37 degrees facing south. This angle has been calculated to optimize the capture of solar radiation throughout the year, taking into account the location's latitude and the Earth's elliptical orbit.
Environmental Considerations
While Cleghorn doesn't face any extraordinary environmental challenges for solar production, there are some factors to consider:
- Snow accumulation in winter can temporarily reduce panel efficiency
- Occasional severe weather, including thunderstorms and tornadoes, may pose risks to solar installations
To mitigate these issues, consider installing panels at a steeper angle to promote snow shedding, use durable mounting systems to withstand high winds, and implement regular maintenance to ensure optimal performance. Additionally, a monitoring system can help detect and address any weather-related impacts promptly.
In conclusion, while Cleghorn's location is not ideal for year-round solar energy production due to significant seasonal variations, proper installation techniques and maintenance can still make solar PV a viable energy option, particularly during the spring and summer 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 Cleghorn
Seasonal solar PV output for Latitude: 42.8047, Longitude: -95.7137 (Cleghorn, 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 37° South in Cleghorn, United States
To maximize your solar PV system's energy output in Cleghorn, United States (Lat/Long 42.8047, -95.7137) throughout the year, you should tilt your panels at an angle of 37° 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 Cleghorn, 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 Cleghorn, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 37° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 26° South in Summer | 47° South in Autumn | 57° South in Winter | 36° 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 Cleghorn, 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 Cleghorn, 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 Cleghorn, United States
The topography around Cleghorn, United States, located at 42.8047 degrees north latitude and 95.7137 degrees west longitude, is characterized by gently rolling plains typical of the Midwestern United States. This area, situated in northwestern Iowa, features a predominantly flat to slightly undulating landscape with occasional low hills and shallow valleys. The terrain surrounding Cleghorn is part of the larger Prairie Pothole Region, which was shaped by glacial activity during the last ice age. As a result, the land is dotted with numerous small depressions or "potholes" that often fill with water, creating wetlands and small ponds. These features contribute to the subtle variations in the otherwise relatively uniform topography. The elevation in the Cleghorn area generally ranges from about 1,300 to 1,400 feet above sea level, with minimal dramatic changes in altitude. The landscape is primarily composed of rich, fertile soils that support extensive agricultural activities, including crop farming and livestock grazing. Fields of corn and soybeans dominate the visual landscape, interspersed with patches of grassland and scattered woodlots along waterways.
Suitability 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 Cleghorn offers some advantages for solar development: Firstly, the relatively flat topography provides ample space for the installation of large solar arrays without the need for significant land grading or terraforming. This can help reduce construction costs and minimize environmental impact. Secondly, the open agricultural lands in the region receive abundant sunlight throughout much of the year, which is crucial for solar energy production. The lack of major geographical features that could cast shadows or obstruct sunlight further enhances the area's potential for solar development. The most suitable locations for large-scale solar PV installations would likely be found on non-prime agricultural lands or areas with slightly higher elevations. These could include gently sloping hillsides facing south or southeast, which would maximize exposure to sunlight throughout the day. Additionally, areas near existing electrical infrastructure, such as power lines or substations, would be advantageous for connecting solar facilities to the grid. It's important to note that while the topography is generally favorable, other factors such as local zoning regulations, environmental considerations, and community acceptance would also play crucial roles in determining the most suitable sites for large-scale solar PV development in the vicinity of Cleghorn.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: Monday 3rd of February 2025
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.
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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.




