Herenthout, Flanders, Belgium, situated at coordinates 51.1406, 4.7563, presents a moderate location for solar PV energy generation with significant seasonal variations. This northern European site experiences substantial fluctuations in solar energy production throughout the year.
Seasonal Solar Production
The solar energy potential in Herenthout follows a predictable seasonal pattern. Summer months are the most productive, generating 5.29kWh per day for each kilowatt of installed capacity. Spring follows as the second most productive season with 4.50kWh/day per kW installed. Production drops considerably in autumn to 2.26kWh/day, while winter sees the lowest output at just 1.12kWh/day per kW of installed solar capacity.
This pattern creates a significant disparity between summer and winter production, with summer generating nearly five times more energy than winter per unit of installed capacity. The combined spring and summer seasons (roughly April through September) represent the optimal period for solar energy generation in this location.
Optimal Panel Installation
For fixed solar panel installations in Herenthout, Flanders, the ideal tilt angle to maximize year-round energy production is 43 degrees facing South. This specific angle has been calculated to optimize annual solar collection based on the location's latitude and seasonal sun positions.
Environmental and Weather Considerations
Several factors may impact solar production at this Belgian location:
- Cloud cover and rainfall: Belgium's climate includes frequent cloud cover and precipitation, particularly in autumn and winter, which corresponds with the lower production figures for these seasons.
- Snow and frost: Winter conditions may include snow accumulation on panels, reducing efficiency beyond the already low winter production rates.
- Dust and pollen: Agricultural activities in the region can generate dust, while spring pollen may coat panels.
- Limited winter daylight: The northern location experiences shorter days during winter months.
Preventative Measures
To optimize solar production despite these challenges, consider these installation and maintenance approaches:
- Install self-cleaning panels or implement regular cleaning schedules, especially after pollen season and before winter.
- Use panels rated for high performance in diffuse light conditions to maximize energy capture during cloudy periods.
- Consider snow-shedding mounting systems with sufficient tilt to allow snow to slide off panels.
- Implement micro-inverters or power optimizers to minimize the impact of partial shading on overall system performance.
- Ensure adequate spacing between panel rows to prevent inter-row shading, particularly important during low-angle winter sun.
While Herenthout isn't ideal for year-round solar production due to its significant seasonal variations, proper system design and maintenance can still make solar PV a viable renewable energy option at this location, particularly when sized to take advantage of the productive spring and 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 Herenthout
Seasonal solar PV output for Latitude: 51.1406, Longitude: 4.7563 (Herenthout, 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 Herenthout, Belgium
To maximize your solar PV system's energy output in Herenthout, Belgium (Lat/Long 51.1406, 4.7563) 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 Herenthout, 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 Herenthout, 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 Herenthout, 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 Herenthout, 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 Herenthout, Belgium
The landscape around Herenthout, Belgium presents a predominantly flat to gently undulating topography, characteristic of the broader Campine region in the northern part of the country. Situated in the province of Antwerp, Herenthout lies in the transition zone between the sandy soils of the Campine plateau to the east and the more clayey lowlands of the Scheldt basin to the west. The elevation in this area typically ranges between 10 to 25 meters above sea level, with minimal dramatic relief features. The surrounding countryside features a patchwork of agricultural fields, small wooded areas, and scattered rural settlements. The Kleine Nete river flows not far from Herenthout, creating a shallow valley that represents one of the few natural variations in an otherwise level landscape. This river and its tributaries have shaped subtle depressions in the terrain over millennia.
Soil and Land Cover
The soils around Herenthout consist primarily of sandy loam and light clay, reflecting the area's position between the sandier Campine region and the more fertile agricultural lands to the west. The land use is predominantly agricultural, with fields devoted to crops and pastures for livestock. Interspersed among these are residential areas, small industrial zones, and patches of woodland that add texture to the landscape.Potential Areas for Solar PV Development
When considering locations for large-scale solar photovoltaic installations near Herenthout, several factors become relevant in this relatively flat landscape. The agricultural lands surrounding the municipality offer substantial open spaces that could potentially accommodate solar arrays. In particular, the areas to the north and east of Herenthout, extending toward Grobbendonk and Herentals, feature larger agricultural parcels with minimal shadowing from trees or structures. The industrial zones near Herenthout also present opportunities for solar development, particularly on large commercial rooftops or in designated industrial expansion areas. These locations often have existing electrical infrastructure that could facilitate grid connection. Areas to avoid would include the immediate vicinity of the Kleine Nete river valley, which has greater ecological sensitivity and may be subject to periodic flooding. Similarly, the more densely wooded sections scattered throughout the region would require clearing, creating environmental impact concerns. The flat nature of the terrain means that aspect (the direction a slope faces) is less of a concern than in more mountainous regions. However, even in this relatively level landscape, slight south-facing inclines would maximize solar exposure for fixed-tilt installations. Given Belgium's land use pressures and the value of agricultural land, the most suitable approach might involve dual-use concepts, where solar installations are integrated with continued agricultural activity, particularly grazing or cultivation of shade-tolerant crops. Additionally, former industrial sites or brownfields in the broader region could offer development opportunities with minimal conflict with other land uses.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: Tuesday 20th of May 2025
Last Updated: Friday 28th of November 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.
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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.




