Stavelot, Wallonia, Belgium, is a location where you can generate energy using solar panels all year round. However, the amount of energy you can produce varies greatly depending on the season.
In simple terms, solar panels work best when they get a lot of sunlight. During summer and spring in Stavelot, Wallonia, each kilowatt of installed solar capacity can generate about 5.25 and 4.63 kilowatt-hours per day respectively. These are the ideal times for generating solar power as the days are longer and sunlight is more abundant.
On the other hand, during autumn and winter, each kilowatt of installed solar capacity generates less power - around 2.46 and 1.18 kilowatt-hours per day respectively - because there's less sunlight due to shorter days.
To make sure your solar panels work as efficiently as possible throughout the year in Stavelot, Wallonia, they should be tilted at an angle of 43 degrees facing southward for maximum exposure to sunlight.
When it comes to local factors that could affect how much energy your panels produce: Belgium is known for its cloudy weather which could reduce how much sun reaches your panels; its varied topography (hilly or mountainous areas) might also block some sunlight; trees or buildings could cast shadows over your installation too.
To overcome these challenges: Choose a clear spot without obstructions for installing your panel; trim any nearby trees that might cast shadows over it; consider using tracking systems that follow the sun’s path across sky for maximum exposure or use higher efficiency panels that perform better under cloudy conditions.
Remember though – while these measures will help increase production from your system – there will still be variation due to seasonal changes in daylight hours and weather conditions which we cannot control.
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 Stavelot
Seasonal solar PV output for Latitude: 50.3917, Longitude: 5.9275 (Stavelot, 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 Stavelot, Belgium
To maximize your solar PV system's energy output in Stavelot, Belgium (Lat/Long 50.3917, 5.9275) 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 Stavelot, 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 Stavelot, 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 | 63° 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 Stavelot, 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 Stavelot, 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 Stavelot, Belgium
Stavelot, Belgium is situated in the Walloon region of eastern Belgium. The topography is characterized by rolling hills and valleys, with a mix of forested and agricultural areas. It's part of the Ardennes region which is known for its hilly and forested landscapes.
The elevation ranges from 200 to 500 meters above sea level. The city itself sits in a valley along the Amblève River, surrounded by hills on all sides which may limit direct sunlight in certain areas.
For large-scale solar PV installations, flat or gently sloping areas are generally preferred as they require less groundwork and can accommodate more panels per unit area. Given this criterion, agricultural lands around Stavelot could be potential sites for solar PV deployment provided it does not conflict with local land use policies and farming activities.
However, it's also important to consider factors such as local climate (sunlight hours), grid connectivity, proximity to load centers etc when evaluating suitability for solar PV. As Belgium has relatively lower sunlight hours compared to more southern European countries, efficiency of solar panels might be somewhat lower but advancements in technology are making solar power feasible even in less sunny regions.
In addition to ground-mounted systems on open lands, rooftops of large buildings (like warehouses) could also serve as potential sites for installing solar panels within the city or industrial zones nearby.
It would ultimately require detailed site assessment including technical feasibility studies and environmental/social impact assessments before any definitive conclusion can be made about suitable locations for large-scale solar PV around Stavelot.
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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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Monday 8th of January 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.




