The location at Louvain-la-Neuve, Wallonia, Belgium is a decent spot for generating solar energy year-round, though it's not the most ideal. For each kilowatt of installed solar power, you can expect to generate about 5.25 kilowatt-hours per day in the summer, 4.63 in spring, 2.46 in autumn and just 1.18 in winter.
This means that your solar panels will be most effective during the longer daylight hours of spring and summer when they can soak up more sun. Autumn and winter days are shorter with less sunlight so your panels won't produce as much electricity during these seasons.
In order to get the most out of your solar installation throughout the year at this location, you should tilt your panels at an angle of 43 degrees facing southwards - this is considered optimal for capturing sunlight over all four seasons.
However, there might be some local factors that could interfere with how much energy you're able to produce from your solar installation here:
1) Weather: Belgium has a temperate maritime climate which means it gets plenty of rain and cloudy days throughout the year which could reduce how much sunlight reaches your panels especially during autumn and winter months.
Prevention: To combat this issue consider installing a larger number of panels or higher efficiency models that can make better use of limited light conditions.
2) Building & Vegetation Shadows: If there are tall buildings or trees nearby these could cast shadows on your solar panel setup reducing their exposure to direct sunlight.
Prevention: Try placing them where they'll have an unobstructed view of the sky or trim back any foliage that may grow to block their access to light over time.
3) Dust & Debris: Over time dust particles or other debris like fallen leaves might accumulate on top of your panels blocking some sunlight from reaching them effectively reducing their output.
Prevention: Regular cleaning/maintenance can help ensure your panels are always working at peak efficiency.
Remember, while there may be some challenges to overcome, solar power is a sustainable and renewable energy source that can significantly cut down on your electricity bills and carbon footprint.
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 Louvain-la-Neuve
Seasonal solar PV output for Latitude: 50.6672, Longitude: 4.6068 (Louvain-la-Neuve, 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 Louvain-la-Neuve, Belgium
To maximize your solar PV system's energy output in Louvain-la-Neuve, Belgium (Lat/Long 50.6672, 4.6068) 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 Louvain-la-Neuve, 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 Louvain-la-Neuve, 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 Louvain-la-Neuve, 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 Louvain-la-Neuve, 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 Louvain-la-Neuve, Belgium
Louvain-la-Neuve is located in the central part of Belgium, in the Walloon Brabant province. The topography around this area is relatively flat to gently undulating with some low hills. It's a mix of urban areas, farmland, and forests.
The region receives moderate sunlight throughout the year, which makes it suitable for solar PV installations to some extent. However, Belgium isn't known for its high levels of sunshine compared to other parts of Europe like Spain or Italy.
For large-scale solar PV installations near Louvain-la-Neuve, open spaces such as farmlands or unused lands would be ideal due to their availability and exposure to sunlight. These areas could include regions towards the south-east or north-west from Louvain-la-Neuve where there are less densely populated areas and more available land.
However, before proceeding with any large-scale installation project it would be necessary to conduct a detailed feasibility study including aspects like local weather patterns (especially sun hours), land use restrictions and potential environmental impacts among others.
It's also worth noting that rooftops in urban environments like Louvain-la-Neuve itself can provide significant opportunities for smaller scale distributed solar PV systems. This approach has been widely adopted across Belgium due to government incentives encouraging renewable energy generation at household level.
In terms of infrastructure support for such projects - proximity to existing power grids is another important factor when considering locations for large scale solar farms; as building new transmission lines can significantly add up costs on these projects.
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: Monday 13th of May 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.




