Based on the data provided, Kapellen in Belgium can be considered a decent location for generating solar energy throughout the year. However, it's not perfect due to seasonal variability.
During summer, you can expect to generate around 5.35 kilowatt-hours (kWh) of electricity per day for each kilowatt (kW) of installed solar power capacity. This is the best time of year for solar production because days are longer and sunlight is more intense.
In spring, you can still get quite a lot of energy - about 4.56 kWh/day per kW installed. That's less than in summer but still substantial.
Autumn sees a significant drop to about 2.33 kWh/day per kW installed as days become shorter and sunlight becomes less intense.
Winter is the least productive season with only about 1.17 kWh/day generated per kW installed due to short daylight hours and often overcast skies.
To maximize your total annual solar power production at this location, you should tilt your panels at an angle of 44 degrees facing south if they're fixed installations.
As for local factors that could affect your solar output in Kapellen:
Belgium typically has cloudy or overcast weather conditions which might reduce your system’s productivity especially during autumn and winter months when there’s already limited sunshine available. It also rains fairly frequently which could potentially limit panel efficiency if they're not cleaned regularly since dirt or debris might accumulate on them reducing their ability to capture sunlight effectively.
To counter these issues:
- You could consider installing tracking systems that follow the sun across the sky instead of fixed panels; this increases overall efficiency but also installation costs.
- Regular maintenance including cleaning panels after heavy rainfalls would ensure optimal performance.
- Also consider using high-efficiency modules designed specifically for low-light conditions.
Remember though that even with these measures in place, seasonal variations will still mean lower productivity during autumn and winter compared to spring and summer.
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 Kapellen
Seasonal solar PV output for Latitude: 51.3148, Longitude: 4.4413 (Kapellen, 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 44° South in Kapellen, Belgium
To maximize your solar PV system's energy output in Kapellen, Belgium (Lat/Long 51.3148, 4.4413) throughout the year, you should tilt your panels at an angle of 44° 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 Kapellen, 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 Kapellen, Belgium. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 44° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 35° 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 Kapellen, 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 Kapellen, 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 Kapellen, Belgium
Kapellen, Belgium is located in the province of Antwerp. The topography around Kapellen is relatively flat with slight undulations, typical of the low-lying terrain found across much of Belgium.
When considering large-scale solar PV installations, flat or gently sloping locations are ideal as they allow for easy installation and maintenance while maximizing exposure to sunlight. Given this criteria, there would likely be suitable areas for such a project within and around Kapellen itself due to its topography.
However, suitability also depends on factors like local climate (amount of sun hours), land use restrictions and proximity to power grids. In terms of climate, Belgium has moderate sunlight exposure compared to more southern European countries but solar energy is still viable especially with modern high-efficiency panels.
For specific sites best suited for largescale solar PV near Kapellen, one would have to conduct a detailed survey taking into account all these factors. Generally speaking though, open fields not used for agriculture or natural reserves could potentially be good candidates given their typically unrestricted sunlight access and ease of construction.
Remember that any renewable energy project should take into consideration potential environmental impacts and aim at minimizing them by selecting appropriate locations and using environmentally friendly construction methods.
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 26th of June 2024
Last Updated: Monday 21st of July 2025
Tell Us About Your Work
We love seeing how our research helps others! If you've cited this article in your work, we'd be delighted to hear about it. Drop us a line via our Contact Us page or on X, to share where you've used our information - we may feature a link to your work on our site. This helps create a network of valuable resources for others in the solar energy community and helps us understand how our research is contributing to the field. Plus, we occasionally highlight exceptional works that reference our research on our social media channels.
Feeling generous?
Share this with your friends!

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.




