The location at Rebecq, Wallonia, Belgium is moderately suitable for generating energy via solar photovoltaic (PV) systems throughout the year. During the summer and spring seasons, the output of electricity per kilowatt of installed solar is higher compared to autumn and winter. Specifically, in summer you can expect around 5.25kWh/day and in spring about 4.63kWh/day per kW of installed solar power.
However, during autumn and winter, this production drops significantly to around 2.46kWh/day and 1.18kWh/day respectively due to shorter daylight hours and less intense sunlight during these seasons.
To maximize total year-round production from a fixed panel installation at this location, it would be best to tilt your panels at an angle of approximately 43 degrees towards the south.
There could be some local factors that might affect solar production at this location such as weather conditions like heavy snowfall or overcast skies which are common in Belgium especially during winter months; these can reduce sunlight exposure on your panels thus lowering their productivity.
To counteract these potential issues when installing your solar PV system:
1) Consider using a tracking system that follows the sun's path across the sky - this way even if there's less direct sunlight due to seasonal changes or cloudy weather conditions, your panels will still get maximum possible exposure.
2) Ensure regular maintenance checks especially before winter season begins: clean off any accumulated dust or debris on panels; check for any damages that need repair; also consider installing devices that help melt snow off your panels quickly so they don't stay covered up for too long.
3) You may want to have a backup energy source (like batteries charged by your PV system or grid connection), just in case there are extended periods with low sun exposure due to weather conditions so you won't experience power shortage.
So while Rebecq isn't perfect for year-round high-output solar energy production due to its seasonal weather variations, with the right installation angle and regular maintenance, you can still harness a good amount of solar power especially during spring and summer months.
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 Rebecq
Seasonal solar PV output for Latitude: 50.6652, Longitude: 4.1265 (Rebecq, 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 Rebecq, Belgium
To maximize your solar PV system's energy output in Rebecq, Belgium (Lat/Long 50.6652, 4.1265) 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 Rebecq, 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 Rebecq, 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 |
|---|---|---|---|
| 34° South in Summer | 53° 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 Rebecq, 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 Rebecq, 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 Rebecq, Belgium
Rebecq is a small town in the Walloon region of Belgium, located in the province of Walloon Brabant. The topography around Rebecq is relatively flat with gentle rolling hills, as it's situated on the Belgian Plateau. This region includes areas of farmland and forests.
For large-scale solar PV installations, suitable locations would include open and flat areas that receive plenty of sunlight throughout the year. In this context, farmlands or other open spaces could be potential sites for such installations. However, it's important to consider factors such as land use regulations and environmental impact before deciding on a location.
Moreover, rooftops of large buildings or industrial complexes can also be used for installing solar panels. Given Belgium's commitment to renewable energy sources and reducing carbon emissions, there may already exist incentives for solar power generation in these types of locations.
It should be noted though that although Belgium does not have an extremely high level of sunshine (it has less sun than countries like Spain or Italy), modern solar panels are efficient enough to generate electricity even under less optimal conditions.
Ultimately, a detailed feasibility study including aspects like local climate conditions (solar irradiation levels), grid connection possibilities and economic considerations would provide more specific answers regarding the best places for large-scale solar PV near Rebecq.
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!
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Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Sunday 7th of July 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.




