Grafenau, located in Baden-Wurttemberg, Germany, presents a moderately favorable location for solar PV energy generation throughout the year. Situated in the Northern Temperate Zone, this area experiences distinct seasonal variations in solar energy output.

Seasonal Solar Performance

Summer stands out as the most productive season, with an impressive daily output of 5.55kWh per kW of installed solar capacity. Spring follows closely behind, generating 4.50kWh/day. These seasons offer excellent opportunities for maximizing solar energy production.

Autumn sees a significant decrease in output, dropping to 2.75kWh/day. Winter presents the greatest challenge, with a much lower daily output of 1.31kWh/day. This substantial seasonal variation highlights the importance of efficient energy storage and management systems to balance production throughout the year.

Optimal Panel Positioning

For fixed panel installations in Grafenau, the ideal tilt angle to maximize year-round solar PV production is 41 degrees facing South. This angle optimizes the panels' exposure to sunlight across all seasons, helping to mitigate some of the winter production losses.

Environmental Considerations

While Grafenau's location is generally suitable for solar energy production, there are some environmental factors to consider:

• Cloud cover: The region experiences frequent cloudy days, particularly in autumn and winter, which can reduce solar efficiency.
• Snow accumulation: Winter snowfall can temporarily cover panels, impeding energy production.

To address these challenges, consider implementing these preventative measures:

• Use high-efficiency panels designed to perform well in low-light conditions.
• Install panels at a steeper angle to promote snow sliding off.
• Implement a regular cleaning schedule, especially during winter months.
• Consider a tracking system to maximize sun exposure throughout the day.

By addressing these factors and optimizing panel placement, Grafenau can effectively harness solar energy, particularly during the productive spring and summer months, while mitigating the challenges posed by the less favorable autumn and winter seasons.

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 Grafenau

Seasonal solar PV output for Latitude: 48.7109, Longitude: 8.9186 (Grafenau, 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 41° South in Grafenau, Germany

To maximize your solar PV system's energy output in Grafenau, Germany (Lat/Long 48.7109, 8.9186) throughout the year, you should tilt your panels at an angle of 41° 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 Grafenau, 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 Grafenau, Germany. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 41° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
32° South in Summer	51° South in Autumn	62° South in Winter	41° 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 Grafenau, 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 Grafenau, Germany.

Our calculation method

1. Solar Position:
   We determine the Sun's position on the Winter solstice using the location's latitude and solar declination.
2. Shadow Projection:
   We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle.
3. 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 Grafenau, Germany

The area surrounding Grafenau, Germany, located at coordinates 48.7109°N, 8.9186°E, is characterized by a diverse and picturesque topography typical of the northern Black Forest region. This landscape is a blend of rolling hills, dense forests, and gentle valleys, creating a visually striking and ecologically rich environment. The terrain in and around Grafenau is predominantly hilly, with elevations ranging from approximately 300 to 600 meters above sea level. The town itself is nestled in a valley, with higher elevations rising to the west and south. These hills are part of the larger Black Forest mountain range, which dominates the region's geography. Forests cover a significant portion of the land, with coniferous trees being particularly prevalent. These wooded areas are interspersed with clearings and meadows, creating a patchwork of green spaces. Small streams and creeks wind their way through the valleys, contributing to the area's natural beauty and ecological diversity.

Potential 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 hilly terrain presents both challenges and opportunities for solar energy development. The most suitable areas for large-scale solar PV would likely be found in the more open, south-facing slopes of the hills surrounding Grafenau. These locations would receive more direct sunlight throughout the day, maximizing energy production. However, care must be taken to avoid areas with dense forest cover, as clearing large swaths of trees would be environmentally detrimental. Valley floors and wider meadows could also be potential sites for solar farms, provided they receive adequate sunlight and are not prone to flooding. These flatter areas would require less earthwork for installation, potentially reducing costs and environmental impact. It's important to note that while the region's beauty and ecological significance make it attractive for renewable energy projects, any large-scale solar development would need to be carefully planned to balance energy production with environmental conservation and preservation of the area's natural charm. Local regulations and community preferences would also play a crucial role in determining the feasibility and location of such projects.

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

Tell Us About Your Work

We love seeing how our research helps others! If you've cited this article in your work, we'd be delighted to hear about it. Drop us a line via our Contact Us page or on X, to share where you've used our information - we may feature a link to your work on our site. This helps create a network of valuable resources for others in the solar energy community and helps us understand how our research is contributing to the field. Plus, we occasionally highlight exceptional works that reference our research on our social media channels.

Feeling generous?

Share this with your friends!

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.