Leichlingen, located in North Rhine-Westphalia, Germany, offers moderate potential for solar PV energy generation throughout the year. This location in the Northern Temperate Zone experiences significant seasonal variations in solar energy production, with peak performance during summer months and substantially reduced output during winter.
Seasonal Solar Production
The solar energy output at this location varies dramatically across seasons. Summer is the most productive period, generating an average of 5.16kWh per day for each kilowatt of installed capacity. Spring follows as the second most productive season with 4.27kWh/day. Production drops considerably during autumn to 2.25kWh/day, while winter sees the lowest output at just 1.09kWh/day per installed kilowatt.
This seasonal pattern means that a solar installation in Leichlingen will produce nearly five times more energy in summer than in winter. The substantial difference highlights the importance of proper system sizing to meet year-round energy needs, especially during the less productive winter months.
Optimal Installation Angle
For fixed solar panel installations in Leichlingen, the ideal tilt angle to maximize year-round energy production is 43 degrees facing South. This specific angle has been calculated to optimize annual solar capture based on the location's latitude and seasonal solar patterns, accounting for Earth's elliptical orbit.
Environmental and Weather Challenges
Several environmental factors could impact solar production in Leichlingen. The region's terrain features gentle hills, small valleys, and undulating landscapes that may create shadowing effects at certain times of day. The elevation variation from 50-100 meters in western areas to 200-250 meters in eastern sections means some locations will have better solar exposure than others.
The area experiences typical Central European weather patterns with frequent cloud cover, especially during winter months. North Rhine-Westphalia has a moderate oceanic climate with rainfall distributed throughout the year, which can temporarily reduce solar efficiency.
- Snow accumulation during winter months can cover panels and reduce output
- Morning fog, particularly in river valleys, may delay peak production hours
- Tree coverage and forested areas could cast shadows on potential installation sites
- Industrial pollution from nearby Ruhr area might create atmospheric haze
Recommended Preventative Measures
To maximize solar production in Leichlingen, several installation strategies are advisable. Selecting elevated sites away from river valleys can minimize fog exposure. Installing panels with self-cleaning surfaces or implementing regular cleaning schedules will help maintain efficiency, especially after snowfall or during pollen seasons.
Using microinverters or power optimizers can mitigate partial shading issues caused by the region's undulating terrain. For properties with space limitations, tracking systems that adjust panel angles throughout the day could increase energy capture, particularly during spring and autumn when the sun's path is lower in the sky.
South-facing hillsides offer optimal positioning, while avoiding north-facing slopes is essential. Careful site assessment for potential shadow sources (trees, buildings, terrain features) should be conducted prior to installation to ensure maximum year-round performance.
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 919 locations across Germany. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Germany by location
Solar output per kW of installed solar PV by season in Leichlingen
Seasonal solar PV output for Latitude: 51.106, Longitude: 7.0128 (Leichlingen, Germany), 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 43° South in Leichlingen, Germany
To maximize your solar PV system's energy output in Leichlingen, Germany (Lat/Long 51.106, 7.0128) throughout the year, you should tilt your panels at an angle of 43° 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 Leichlingen, Germany
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 Leichlingen, Germany. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 43° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 34° South in Summer | 54° South in Autumn | 64° South in Winter | 43° 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 Leichlingen, Germany
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 Leichlingen, Germany.
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 Leichlingen, Germany
Leichlingen, Germany, situated at latitude 51.106 and longitude 7.0128, features a varied topography that reflects the transitional landscape between the Rhine Valley and the Bergisches Land. The terrain around Leichlingen is characterized by gentle hills, small valleys, and undulating landscapes that gradually rise toward the east. The western portions of Leichlingen lie in the relatively flat areas approaching the Rhine Valley, with elevations typically between 50-100 meters above sea level. As one moves eastward, the landscape becomes more pronounced with rolling hills that form part of the western foothills of the Bergisches Land region. These elevations gradually increase to approximately 200-250 meters in the eastern sections.
Waterways and Valleys
The Wupper River flows through Leichlingen, carving a valley that influences the local topography. This river valley creates natural depressions in the landscape, with steeper slopes along certain sections of its banks. Several smaller streams and tributaries further segment the terrain, creating a network of minor valleys throughout the area.Forest and Open Areas
The landscape around Leichlingen includes a mixture of forested areas, particularly on steeper slopes and hilltops, interspersed with agricultural fields and meadows in flatter regions. This mosaic of land use reflects both the natural topography and centuries of human modification.Potential Areas for Solar PV Development
For large-scale solar photovoltaic installations, the most suitable areas near Leichlingen would be the gently sloping south-facing hillsides and plateaus, particularly in the western and southwestern portions where the terrain flattens toward the Rhine Valley. These areas benefit from favorable orientation toward the sun's path and have less shadowing from topographical features. The agricultural plains west of Leichlingen, extending toward Langenfeld and Leverkusen, offer relatively flat terrain that would minimize installation complexity and maximize exposure to sunlight. These areas typically have fewer forests and natural obstacles that would otherwise create shadowing issues. Areas to avoid would include the steeper eastern hillsides, densely forested regions, and the immediate vicinity of the Wupper Valley where morning and evening shadowing from surrounding hills could significantly reduce energy generation potential. North-facing slopes throughout the region would also be suboptimal for solar energy capture. The moderately elevated plateaus between Leichlingen and Burscheid, where they feature south or southwest aspects, represent a good compromise between land availability and optimal solar exposure. These areas typically have sufficient elevation to avoid morning fog that sometimes settles in the river valleys, potentially increasing overall generation efficiency.Germany solar PV Stats as a country
Germany ranks 4th in the world for cumulative solar PV capacity, with 58,461 total MW's of solar PV installed. This means that 9.70% of Germany's total energy as a country comes from solar PV (that's 3rd in the world). Each year Germany is generating 702 Watts from solar PV per capita (Germany ranks 3rd in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Germany?
Yes, there are a few incentives for businesses wanting to install solar energy in Germany. These include feed-in tariffs, which guarantee businesses a price per kilowatt hour of electricity produced from their solar system; tax incentives such as the reduction of corporate income taxes; and subsidies from regional governments or utilities. Additionally, Germany's Renewable Energy Sources Act (EEG) provides additional support for projects that involve renewable energies.
Do you have more up to date information than this on incentives towards solar PV projects in Germany? 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 1st of May 2025
Last Updated: Sunday 21st of September 2025
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Compare this location to others worldwide for solar PV potential
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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.




