Olen, Flanders, Belgium can produce a good amount of solar energy throughout the year, but it's not ideal for all seasons. In simple terms, if you install a solar panel system here, it will generate more electricity in some parts of the year than others.
In summer and spring, your panels will work quite well. They'll generate around 5.35 kilowatt-hours (kWh) per day in summer and 4.56 kWh/day in spring for each kilowatt (kW) of solar panels installed. This is when daylight hours are longest and sunlight is most intense.
In autumn or fall, your panels won't be as effective - they'll only make about 2.33 kWh/day per kW installed because days are shorter and there's less sun.
Winter is the least productive time for solar energy here with only about 1.17 kWh/day produced per kW installed due to short days and often overcast skies.
So if you're thinking about installing solar panels in Olen, Flanders, Belgium, bear these seasonal differences in mind - you might need additional sources of power during autumn and winter or consider battery storage solutions to store excess energy generated during summer/spring for use later on.
The best way to set up your panels at this location would be at an angle facing southwards tilted at around 43 degrees from horizontal level; this position captures maximum sunlight across different times of the year improving overall yearly production from your solar PV system.
As far as local factors that could affect your system's performance go: Belgium has a temperate maritime climate which means frequent rainfall throughout the year; rain could potentially reduce output when it blocks sunlight although modern PV systems are designed to withstand such conditions without significant loss in efficiency or damage risk.
Also remember that snowfall during winter may cover panels reducing their effectiveness; regular maintenance including clearing off snow from panel surfaces can help ensure consistent performance.
Another factor could be shading caused by nearby buildings, trees etc. which can be addressed during site selection and installation to ensure your panels get maximum sunlight exposure throughout the day.
In conclusion, while Olen, Flanders, Belgium may not provide year-round ideal conditions for solar energy production due to its seasonal variations in sunlight intensity and weather conditions like rainfall/snowfall; with careful planning including optimal panel positioning and regular maintenance you can still generate a good amount of renewable energy from solar PV systems installed here.
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 Olen
Seasonal solar PV output for Latitude: 51.146, Longitude: 4.8596 (Olen, 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 Olen, Belgium
To maximize your solar PV system's energy output in Olen, Belgium (Lat/Long 51.146, 4.8596) 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 Olen, 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 Olen, 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 |
|---|---|---|---|
| 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 Olen, 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 Olen, 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 Olen, Belgium
Olen, Belgium is located in the northern part of the country and it's generally flat with slight undulations. The area is a mix of urban settlements, agricultural fields, and patches of forest.
For large-scale solar PV installations, open and flat areas are typically most suitable as they allow for easy installation and maximum sunlight exposure. Therefore, unused agricultural fields could be potential sites for such projects in this region.
However, other factors including land ownership rights, proximity to power grids for energy transmission, local regulations regarding land use and renewable energy projects etc., also need to be considered while selecting a site for large-scale solar PV installations.
Moreover, although Belgium isn't known for its high levels of sunshine (compared to countries closer to the equator), advances in solar technology have made it possible to generate significant amounts of electricity even under less than ideal conditions. Thus making it feasible to install solar panels in this region.
It's important that any decision about where exactly these should be installed should involve consultation with local communities and stakeholders as well as detailed feasibility studies conducted by professionals.
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: Saturday 25th 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.




