The location at Charleroi, Wallonia, Belgium is somewhat ideal for generating energy via solar PV, but with some caveats. The amount of electricity a solar panel can produce varies throughout the year due to seasonal changes in sunlight intensity and duration.
In summer (the most ideal time), you can expect each kilowatt of installed solar to generate about 5.25kWh per day. In spring, the output drops slightly to around 4.63kWh/day per kW of installed solar power. However, during autumn and winter (less ideal times), the output decreases significantly - down to 2.46 kWh/day in autumn and as low as 1.18kWh/day in winter.
To maximize total energy production all year round from your panels at this location, it's best to tilt them at an angle of approximately 43 degrees facing south.
However, there are several local factors that could potentially hinder solar production here:
1) Belgium has a temperate maritime climate characterized by relatively mild winters and cool summers which means frequent overcast skies especially during late autumn through early spring months which reduces sunlight availability.
2) Snowfall during winter may cover the panels reducing their efficiency unless cleared regularly.
3) Dust or debris accumulation on panels can also reduce their efficiency over time if not cleaned regularly.
Here are some preventative measures that could be taken when installing your solar system:
1) Install a snow guard or similar device above the panels to prevent snow from accumulating on them.
2) Regularly clean your panels to remove any dust or debris that could block sunlight.
3) Consider installing a tracking system for your panels so they move with the sun throughout the day maximizing exposure.
Remember though these extra measures would add initial costs but might improve overall performance long term depending upon specific local conditions such as frequency & depth of snowfall etc.. Always consult with an experienced local installer who knows well about specific local conditions and can advise accordingly.
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 Charleroi
Seasonal solar PV output for Latitude: 50.4102, Longitude: 4.4472 (Charleroi, 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 Charleroi, Belgium
To maximize your solar PV system's energy output in Charleroi, Belgium (Lat/Long 50.4102, 4.4472) 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 Charleroi, 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 Charleroi, 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 Charleroi, 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 Charleroi, 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 Charleroi, Belgium
Charleroi, Belgium is located in the Walloon Region of Belgium. The topography around Charleroi is characterized by a mix of flat plains and gently rolling hills. The city itself lies on the Sambre River and is surrounded by agricultural land, forests, and urban areas.
Solar PV installations require large open spaces with minimal shade for maximum efficiency. Therefore, the most suitable locations near Charleroi for large-scale solar PV would likely be the flat agricultural lands surrounding the city or potentially repurposed industrial sites within it.
However, several other factors need to be considered before choosing a site for solar energy development such as access to transmission lines, local weather patterns (Belgium tends to have cloudy weather which could impact solar power generation), local regulations regarding land use and renewable energy projects etc.
It's also worth noting that rooftop installations on commercial or residential buildings can also contribute significantly to renewable energy generation without requiring additional land resources.
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: Sunday 23rd of June 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.




