The location at Uccle, Brussels Capital, Belgium is somewhat suitable for generating energy via solar PV year-round. The amount of electricity you can produce from a kilowatt of installed solar varies throughout the year. In summer, it's quite good - about 5.25 kWh per day. Spring isn't far behind with an average output of 4.63 kWh per day.
However, production drops significantly in Autumn and Winter to just 2.46 kWh and 1.18 kWh per day respectively due to shorter daylight hours and less intense sunlight.
Therefore, if you're considering installing solar panels in Uccle, Brussels Capital, the ideal times for power generation would be during Spring and Summer when the sun is more directly overhead and shines for longer periods each day.
To maximize your total yearly production from your solar PV system at this location, you should tilt your panels at an angle of 43 degrees facing South. This will ensure they receive as much sunlight as possible over the course of a year.
As for potential environmental or weather factors that could impede solar production in Uccle - it's important to note that Belgium has a temperate maritime climate characterized by mild summers and cool winters with frequent cloud cover which could reduce potential electricity output from your panels.
Preventative measures that can be taken when installing your system include choosing high-quality panels designed to perform well under cloudy conditions; also consider using tracking systems which follow the sun’s path across the sky maximizing exposure time
Regular maintenance like cleaning off any accumulated dirt or snow on your panels will also help ensure maximum efficiency.
In conclusion: while not optimal compared to more sunny locations closer to the equator; with careful planning and maintenance one could still generate considerable amounts of power through Solar PV technology in Uccle, Brussels Capital, Belgium especially during spring & 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 Uccle
Seasonal solar PV output for Latitude: 50.8028, Longitude: 4.3423 (Uccle, 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 Uccle, Belgium
To maximize your solar PV system's energy output in Uccle, Belgium (Lat/Long 50.8028, 4.3423) 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 Uccle, 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 Uccle, 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 | 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 Uccle, 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 Uccle, 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 Uccle, Belgium
Uccle, Belgium is located in the central part of the country and is characterized by a relatively flat terrain interspersed with gentle hills. The area forms part of the Brussels-Capital Region, which means it's largely urbanized.
When considering areas for large-scale solar photovoltaic (PV) installations, factors such as available sunlight, land availability, proximity to power grids and minimal environmental impact should be considered. Given Uccle's urban character, rooftop solar installations on buildings can be an effective way of implementing large-scale PV systems without requiring additional land resources.
However, for ground-mounted solar farms which require larger expanses of land, less densely populated areas nearby might be more suitable. These could include agricultural lands or unused industrial sites where there is ample space and fewer obstructions to sunlight. It's also important to consider local regulations regarding renewable energy projects.
Belgium has a moderate level of sunlight compared to other European countries like Spain or Italy but still receives enough sun for solar power generation to be viable. Therefore while topography plays a role in determining suitable locations for solar PVs; climate conditions such as cloud cover and hours of sunshine are equally crucial considerations when planning large-scale solar installations in this region.
Please note that any decision on setting up large scale Solar PV would need detailed feasibility study taking into account multiple factors including potential yield based on local irradiance data (amount of sun), grid connection possibilities etc., along with environmental impact assessments before proceeding further.
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: Wednesday 24th of April 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.




