Solar PV Analysis of Viernheim, Germany
The location at Viernheim, Hesse, Germany is fairly good for generating energy via solar PV all year round. However, it's not perfect due to the seasonal variations in sunlight.
In simple terms, the amount of electricity a solar panel can produce depends on how much sunlight it receives. At this location in Germany, the amount of sunlight changes significantly throughout the year. In summer and spring, there's quite a lot of sunlight (5.55kWh/day and 4.57kWh/day respectively), so you'll get more electricity from your solar panels during these seasons.
On the other hand, during autumn and winter when days are shorter and less sunny (2.59kWh/day and 1.24kWh/day), your panels will generate less electricity.
If you're installing fixed solar panels at this location to maximize total production across all four seasons combined then ideally they should be tilted at an angle of 42 degrees towards South direction.
As for local factors that could potentially impede solar production at this site: Viernheim is located in a temperate climate zone with moderate rainfall throughout the year which could occasionally obscure sunrays hitting directly onto your panels thereby reducing their output slightly but not significantly enough to deter installation altogether.
To mitigate against such weather conditions affecting power generation from your installed PV system; consider implementing measures like equipping them with automatic cleaning systems or protective coatings that repel water & dust particles hence maintaining optimum exposure to direct sunlight as much as possible even under adverse weather conditions - ensuring greater energy production overall despite any environmental challenges faced by this particular locale situated within Northern Temperate Zone lat/long coordinates being 49.5443N /8.5782E respectively.
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 Viernheim
Seasonal solar PV output for Latitude: 49.5443, Longitude: 8.5782 (Viernheim, 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 42° South in Viernheim, Germany
To maximize your solar PV system's energy output in Viernheim, Germany (Lat/Long 49.5443, 8.5782) throughout the year, you should tilt your panels at an angle of 42° 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 Viernheim, 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 Viernheim, Germany. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 42° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 33° South in Summer | 52° South in Autumn | 63° South in Winter | 42° 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 Viernheim, 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 Viernheim, 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 Viernheim, Germany
Viernheim is located in the Rhine-Neckar Metropolitan Region of southwestern Germany. The topography around Viernheim is relatively flat, as it's situated in the Upper Rhine Plain, which is ideal for installing solar panels.
The region experiences a temperate seasonal climate with moderate to heavy rainfall year-round. Despite this, Germany has been successful in implementing solar power nationwide and it remains one of the leading countries for photovoltaic installed capacity.
Large-scale solar PV installations require large areas of open land that are not shaded and have good exposure to sunlight. In the vicinity of Viernheim, such areas could include agricultural lands or other open spaces that are not used for residential or natural conservation purposes.
However, before any installation can be considered, thorough studies including environmental impact assessments would need to be carried out to ensure minimal disruption to local ecosystems and communities.
Additionally, rooftop installations on commercial or industrial buildings could also be an option for solar PV within urban areas if ground space is limited.
Lastly, it should also be noted that while geographical position and topography play a role in determining suitability for solar PV installations, other factors such as local regulations and policies as well as grid connectivity are equally important considerations.
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: Tuesday 11th of June 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.
