Bonheiden, Flanders, Belgium, situated at latitude 51.0143 and longitude 4.5415, presents a mixed picture for solar energy generation throughout the year. Located in the Northern Temperate Zone, this region experiences significant seasonal variations in solar output.
Seasonal Solar Performance
Summer stands out as the most productive season for solar energy in Bonheiden, Flanders, with an average daily output of 5.35 kWh per kW of installed solar capacity. Spring follows closely behind, generating 4.56 kWh/day. However, the performance drops considerably during autumn, with only 2.33 kWh/day, and reaches its lowest point in winter, producing a mere 1.17 kWh/day.
These figures highlight the stark contrast between the warm and cold seasons, with summer generating more than four times the energy of winter. This disparity underscores the importance of efficient energy storage solutions to balance out the seasonal fluctuations.
Optimal Panel Positioning
To maximize year-round solar energy production in Bonheiden, Flanders, fixed solar panels should be installed at a tilt angle of 43 degrees facing south. This angle has been calculated to optimize the capture of sunlight throughout the year, taking into account the Earth's elliptical orbit and the location's specific latitude.
Environmental Factors and Mitigation Strategies
The primary environmental factor affecting solar production in Bonheiden is the region's cloudy climate. Belgium is known for its frequent overcast conditions, which can significantly reduce solar panel efficiency. To mitigate this issue, consider the following strategies:
- Use high-efficiency solar panels designed to perform well in low-light conditions
- Implement a robust cleaning schedule to prevent dust and debris accumulation, which can further reduce efficiency in cloudy weather
Additionally, Bonheiden's location in a temperate zone means it experiences occasional snowfall in winter. While not a year-round concern, snow can temporarily reduce solar output. Installing panels at the recommended 43-degree angle helps facilitate natural snow shedding, minimizing the impact on energy production.
In conclusion, while Bonheiden's location is not ideal for year-round solar energy production due to significant seasonal variations and frequent cloud cover, implementing the right technologies and maintenance strategies can still make solar PV a viable renewable energy option for this Belgian town.
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 201 locations across Belgium. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Belgium by location
Solar output per kW of installed solar PV by season in Bonheiden
Seasonal solar PV output for Latitude: 51.0143, Longitude: 4.5415 (Bonheiden, Belgium), 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 Bonheiden, Belgium
To maximize your solar PV system's energy output in Bonheiden, Belgium (Lat/Long 51.0143, 4.5415) 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 Bonheiden, Belgium
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 Bonheiden, Belgium. 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 |
|---|---|---|---|
| 35° 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 Bonheiden, Belgium
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 Bonheiden, Belgium.
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 Bonheiden, Belgium
The topography around Bonheiden, Belgium is characterized by a relatively flat landscape typical of the Flemish region. This area is part of the Low Countries, which are known for their low-lying, gently rolling terrain. The elevation in and around Bonheiden is generally between 5 to 15 meters above sea level, with very little variation in height.
The surrounding landscape consists primarily of agricultural fields, small patches of woodland, and suburban developments. The region is crisscrossed by numerous small rivers and streams, including the Dijle River, which flows near Bonheiden. These waterways have shaped the local topography over time, creating subtle valleys and slightly elevated areas, but the overall impression remains one of a flat, open landscape.
Regarding areas nearby that would be most suited to large-scale solar PV (photovoltaic) installations, the flat terrain of the region generally offers good potential for solar energy development. However, several factors need to be considered:
The most suitable areas for large-scale solar PV would likely be found in the open agricultural lands surrounding Bonheiden and neighboring communities. These areas offer large, unobstructed spaces that receive consistent sunlight throughout the day. Farmland that is less productive or fallow could be ideal for solar installations, as it would minimize conflicts with food production.
It's important to note that while the topography is favorable, other factors such as local zoning regulations, grid connection availability, and environmental considerations would also play crucial roles in determining the most suitable locations for large-scale solar PV projects. Additionally, care should be taken to balance renewable energy development with the preservation of the region's cultural landscape and agricultural heritage.
Belgium solar PV Stats as a country
Belgium ranks 19th in the world for cumulative solar PV capacity, with 6,585 total MW's of solar PV installed. This means that 6.60% of Belgium's total energy as a country comes from solar PV (that's 10th in the world). Each year Belgium is generating 569 Watts from solar PV per capita (Belgium ranks 5th in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Belgium?
Yes, there are several incentives for businesses wanting to install solar energy in Belgium. The Belgian government offers a range of financial support measures for businesses that invest in renewable energy sources such as solar power. These include tax deductions, grants and subsidies, as well as access to low-interest loans. Additionally, the Flemish Energy Agency (VEA) provides free advice and guidance on how to make the most of these incentives.
Do you have more up to date information than this on incentives towards solar PV projects in Belgium? 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: Monday 16th of September 2024
Last Updated: Monday 21st of July 2025
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.




