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Flag of GermanySolar PV Analysis of Hemau, Germany

Graph of hourly avg kWh electricity output per kW of Solar PV installed in Hemau, Germany (by season)

Hemau, Bavaria, Germany presents a moderately favorable location for solar photovoltaic energy generation, though with significant seasonal variations typical of its Northern Temperate Zone position at coordinates 49.0388°N, 11.8462°E.

Seasonal Solar Performance

The solar energy output at Hemau varies dramatically throughout the year. Summer delivers the strongest performance at 5.59 kWh per day per kW of installed capacity, making it the peak season for solar generation. Spring follows as the second-best period with 4.38 kWh per day per kW, offering substantial energy production as daylight hours increase and solar angles improve. Autumn sees a notable decline to 2.54 kWh per day per kW as the sun's path becomes lower and weather conditions typically deteriorate. Winter presents the most challenging conditions with only 1.23 kWh per day per kW, representing less than a quarter of summer's output.

Optimal Installation Configuration

For maximum year-round energy production at Hemau, solar panels should be installed at a fixed tilt angle of 41 degrees facing south. This angle has been calculated to optimize total annual output by accounting for the sun's varying elevation throughout the year and weighting these angles against actual solar irradiance data.

Local Environmental Challenges

Several environmental and weather factors in the Bavarian region can significantly impact solar energy production:
  • Heavy snow accumulation during winter months can completely block solar panels
  • Frequent cloud cover and fog, particularly during autumn and winter seasons
  • Potential hail damage from severe thunderstorms during summer months
  • Dust and pollen accumulation, especially during spring

Preventative Measures for Enhanced Performance

To maximize solar energy production despite these challenges, several installation strategies should be implemented. Installing panels at the recommended 41-degree tilt angle not only optimizes sun exposure but also helps snow slide off more easily, reducing winter blockages. Regular cleaning schedules become essential, particularly during spring pollen season and after dust storms. Installing monitoring systems allows for quick identification of performance drops that might indicate snow coverage or debris accumulation. For hail protection, choosing panels with tempered glass rated for impact resistance provides crucial protection during Bavaria's occasional severe weather events. Additionally, ensuring adequate spacing between panel rows prevents shading issues and allows for maintenance access. The dramatic seasonal variation means that Hemau works best for solar installations when combined with grid connectivity or substantial battery storage systems to compensate for the nearly five-fold difference between summer and winter production levels.

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 Hemau

Seasonal solar PV output for Latitude: 49.0388, Longitude: 11.8462 (Hemau, 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:

Summer
Average 5.59kWh/day in Summer.
Autumn
Average 2.54kWh/day in Autumn.
Winter
Average 1.23kWh/day in Winter.
Spring
Average 4.38kWh/day in Spring.

 

Ideally tilt fixed solar panels 41° South in Hemau, Germany

To maximize your solar PV system's energy output in Hemau, Germany (Lat/Long 49.0388, 11.8462) 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.

The sun
At Latitude: 49.0388, Longitude: 11.8462, the ideal angle to tilt panels is 41° South

Seasonally adjusted solar panel tilt angles for Hemau, 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 Hemau, 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

Assuming you can modify the tilt angle of your solar PV panels throughout the year, you can optimize your solar generation in Hemau, Germany as follows: In Summer, set the angle of your panels to 32° facing South. In Autumn, tilt panels to 51° facing South for maximum generation. During Winter, adjust your solar panels to a 62° angle towards the South for optimal energy production. Lastly, in Spring, position your panels at a 41° angle facing South to capture the most solar energy in Hemau, Germany.

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 Hemau, 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 Hemau, 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.






Please enter information above to calculate panel spacing.

Topography for solar PV around Hemau, Germany

Topographical Features Around Hemau

Hemau sits in the Upper Palatinate region of Bavaria, positioned within the gently undulating landscape characteristic of the Bavarian Jura foothills. The terrain around this small town features a mix of rolling hills, shallow valleys, and relatively flat agricultural plains that extend across much of the surrounding countryside. The elevation in the immediate vicinity ranges from approximately 350 to 450 meters above sea level, creating a moderately varied but generally accessible landscape.

The area is dominated by agricultural land use, with extensive fields of crops and pastures spread across the gentler slopes and valley floors. Scattered woodlands and small forests occupy some of the steeper hillsides and ridge tops, while numerous small streams and tributaries create shallow valley systems that drain toward larger waterways in the region. The underlying geology consists primarily of limestone and other sedimentary rocks typical of the Franconian Jura, which has resulted in well-drained soils and relatively stable ground conditions.

The settlement pattern around Hemau includes the town itself along with several smaller villages and isolated farmsteads distributed across the landscape. Road networks connect these communities through the rolling terrain, generally following natural contours and valley systems where possible.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations around Hemau would be found on the extensive agricultural plains and gently sloping hillsides that characterize much of the surrounding landscape. These areas offer several key advantages including relatively flat to moderately sloping terrain that minimizes construction complexity and reduces shading issues between solar panel arrays.

The open agricultural fields south and east of Hemau present particularly favorable conditions, as they typically feature unobstructed southern exposures with minimal interference from trees or buildings. These areas benefit from good accessibility via existing rural road networks, which would facilitate construction and ongoing maintenance activities. The well-drained soils common throughout the region provide stable foundation conditions for mounting systems.

Gentle south-facing slopes throughout the area would be especially well-suited for solar development, as they naturally optimize panel orientation while maintaining reasonable construction costs. The agricultural nature of much of the surrounding land means that large contiguous areas could potentially be made available for solar projects, either through land conversion or agrivoltaic arrangements that combine farming with solar generation.

Areas to avoid would include the steeper hillsides, particularly those with northern exposures, as well as the forested regions that provide important ecological habitat. The numerous small valleys and drainage areas should also be avoided due to potential shading issues and the risk of seasonal flooding or moisture accumulation.

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

Article: Solar PV Analysis of Hemau, Germany
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Tuesday 12th of August 2025
Last Updated: Tuesday 12th of August 2025

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