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Flag of GermanySolar PV Analysis of Hesse, Germany

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

The location in Hesse, Germany, situated at coordinates 50.5531, 8.9959, presents moderate potential for solar PV energy generation throughout the year. Located in the Northern Temperate Zone, this site experiences significant seasonal variations in solar energy production.

Seasonal Solar Production

Solar energy generation at this Hesse location follows predictable seasonal patterns. Summer offers the highest production at 5.20kWh per day for each kilowatt of installed capacity. Spring follows as the second most productive season with 4.23kWh/day. Energy generation drops considerably during autumn to 2.28kWh/day, while winter experiences the lowest output at just 1.07kWh/day per kilowatt installed.

This pattern creates a substantial difference between summer and winter production, with summer generating nearly five times more energy than winter months. The spring and autumn seasons serve as transitional periods, with spring performance being notably stronger than autumn.

Optimal Panel Installation

For fixed solar panel installations at this Hesse location, the ideal tilt angle to maximize year-round energy production is 43 degrees facing South. This angle has been calculated to optimize annual solar capture across all seasons, accounting for the Earth's elliptical orbit and the site's specific latitude.

Environmental Considerations

Several environmental factors could potentially impact solar production at this location. The most significant is the region's cloud cover pattern, particularly during autumn and winter months when overcast conditions are common in Hesse. Additionally, fog can be prevalent in valley areas during colder months.

Snowfall in winter presents another challenge, as snow accumulation on panels can significantly reduce or completely block solar production during the already low-yield winter season.

The region may also experience occasional hailstorms during summer thunderstorms, which could potentially damage solar installations if severe.

Preventative Measures

  • Install panels with self-cleaning hydrophobic surfaces to minimize dirt and snow accumulation
  • Consider snow guards or slightly steeper installation angles in areas prone to heavy snowfall
  • Use hail-resistant panels with tempered glass that meets local weather condition requirements
  • Implement monitoring systems to detect performance drops and address issues promptly
  • Regular maintenance schedule, particularly before winter and after winter seasons

With proper installation and maintenance practices addressing these environmental factors, a solar PV system at this Hesse location can provide reliable renewable energy, with peak production occurring during the longer, sunnier days of spring and summer.

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 Hesse

Seasonal solar PV output for Latitude: 50.5531, Longitude: 8.9959 (Hesse, 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 5.20kWh/day in Summer.
Autumn
Average 2.28kWh/day in Autumn.
Winter
Average 1.07kWh/day in Winter.
Spring
Average 4.23kWh/day in Spring.

 

Ideally tilt fixed solar panels 43° South in Hesse, Germany

To maximize your solar PV system's energy output in Hesse, Germany (Lat/Long 50.5531, 8.9959) 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.

The sun
At Latitude: 50.5531, Longitude: 8.9959, the ideal angle to tilt panels is 43° South

Seasonally adjusted solar panel tilt angles for Hesse, 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 Hesse, 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 53° South in Autumn 63° South in Winter 43° 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 Hesse, Germany as follows: In Summer, set the angle of your panels to 34° facing South. In Autumn, tilt panels to 53° facing South for maximum generation. During Winter, adjust your solar panels to a 63° angle towards the South for optimal energy production. Lastly, in Spring, position your panels at a 43° angle facing South to capture the most solar energy in Hesse, 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 Hesse, 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 Hesse, 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 Hesse, Germany

The landscape around Hesse, Germany, particularly near the coordinates 50.5531, 8.9959, presents a diverse topographical profile characterized by rolling hills, river valleys, and forested areas. This central German state features elevations that generally range from about 100 meters above sea level in the river valleys to approximately 950 meters at its highest points in the mountainous regions.

Regional Topography

The specified coordinates place us in central Hesse, in an area where several distinct geographical features converge. To the west lie the Taunus mountains, a range that forms part of the Rhenish Slate Mountains with elevations reaching up to 880 meters. The eastern part of Hesse includes the Vogelsberg, a large extinct volcano with gentle slopes and a high plateau. The Rhön mountains can be found to the southeast, while the Westerwald extends to the west and northwest. River valleys cut through these elevated regions, most notably the Lahn River valley which runs through central Hesse. These valleys typically have flatter terrain and have historically been centers of settlement and agriculture. The Main River forms part of the southern boundary of Hesse, creating another significant valley system. Forests cover approximately 42% of Hesse's total area, with mixed deciduous and coniferous woodlands dominating the higher elevations. The lower elevations and valleys feature more agricultural land and urban development.

Solar PV Potential Areas

When considering areas suitable for large-scale solar photovoltaic installations near this region, several factors become important: slope orientation, land availability, existing infrastructure, and environmental considerations. The southern-facing slopes of the valleys and hills throughout central and southern Hesse offer promising locations for solar PV development. These areas benefit from favorable sun angles and reduced shadowing effects. Particularly promising are the gentler southern slopes of the Taunus and the southern portions of the Vogelsberg region. Former agricultural lands or brownfield sites in the broader valleys of the Lahn and Main rivers present opportunities for larger-scale installations without significant topographical challenges. These relatively flat areas allow for easier construction and maintenance of extensive solar arrays. The plateaus of the Vogelsberg region, despite their higher elevation, offer relatively flat terrain that could accommodate larger installations. While this area experiences somewhat cooler temperatures due to elevation, the open landscape with minimal shadowing from mountains makes it a consideration for solar development. Areas to potentially avoid would include the densely forested northern slopes of the mountain ranges, which receive less direct sunlight and would require forest clearing. Similarly, the steepest portions of the various mountain ranges present construction challenges that might make solar development economically unfeasible. The agricultural regions between Frankfurt and Darmstadt in southern Hesse, with their flatter topography and proximity to population centers, represent another area of potential. This region benefits from generally favorable solar conditions combined with proximity to existing electrical infrastructure and demand centers.

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 Hesse, Germany
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Monday 28th of April 2025
Last Updated: Saturday 13th of September 2025

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Compare this location to others worldwide for solar PV potential

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