Solar PV Analysis of Namur, Belgium
Namur, Wallonia, Belgium, situated at latitude 50.4689 and longitude 4.8622, presents a mixed picture for solar energy generation through photovoltaic (PV) systems. This location in the Northern Temperate Zone experiences significant seasonal variations in solar energy production, which impacts the overall efficiency of solar installations throughout the year.
Seasonal Solar Energy Production
The solar energy output at this location varies considerably across the four meteorological seasons:
- Summer: 5.25 kWh/day per kW installed
- Spring: 4.63 kWh/day per kW installed
- Autumn: 2.46 kWh/day per kW installed
- Winter: 1.18 kWh/day per kW installed
These figures indicate that solar energy production is most efficient during the summer months, followed closely by spring. The long days and higher sun angles during these seasons contribute to increased energy output. Autumn sees a significant drop in production, while winter experiences the lowest output due to shorter days and lower sun angles.
Optimal Panel Tilt
For fixed panel installations in Namur, Wallonia, the ideal angle to maximize year-round solar production is 43 degrees facing South. This tilt angle is calculated to optimize energy capture across all seasons, taking into account the location's latitude and the Earth's elliptical orbit.
Environmental and Weather Factors
Several factors can impact solar energy production in Namur:
1. Cloud cover: Belgium's climate is characterized by frequent cloud cover, which can significantly reduce solar energy production. To mitigate this, high-efficiency panels that perform well in diffuse light conditions should be considered.
2. Rainfall: Namur experiences substantial rainfall throughout the year. While rain can help keep panels clean, it also means fewer clear, sunny days. Installing panels with anti-reflective coatings can help maximize energy capture in these conditions.
3. Snow: Winter snowfall can temporarily cover panels, reducing output. Installing panels at the optimal tilt angle helps snow slide off more easily. Additionally, considering snow guards or heated panel systems might be beneficial for consistent winter production.
4. Shading: Urban environments may present shading issues from nearby buildings or trees. Conducting a thorough site assessment and potentially using micro-inverters or power optimizers can help mitigate partial shading effects.
In conclusion, while Namur's location is not ideal for year-round solar energy production, implementing these preventative measures and optimizing panel placement can significantly enhance the overall efficiency of solar PV systems in this area.
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 Namur
Seasonal solar PV output for Latitude: 50.4689, Longitude: 4.8622 (Namur, 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 Namur, Belgium
To maximize your solar PV system's energy output in Namur, Belgium (Lat/Long 50.4689, 4.8622) 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 Namur, 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 Namur, 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 Namur, 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 Namur, 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 Namur, Belgium
Namur, located in southern Belgium, sits in a varied landscape characterized by rolling hills and river valleys. The city itself is nestled at the confluence of two major rivers, the Meuse and the Sambre, which have shaped the surrounding terrain over millennia. The topography around Namur can be described as moderately hilly, with elevations generally ranging from about 80 to 200 meters above sea level.
To the north and west of Namur, the landscape gradually transitions into the flatter plains of central Belgium. These areas feature gentler slopes and more open spaces. To the south and east, the terrain becomes more rugged as it approaches the Ardennes region, with steeper hills and more forested areas.
The river valleys of the Meuse and Sambre create natural corridors through the landscape, with relatively flat floodplains along their banks. These valleys are flanked by steeper hillsides, some of which have been terraced over the centuries for agriculture or urban development.
When considering areas nearby that would be most suited to large-scale solar PV (photovoltaic) installations, several factors come into play. Ideally, solar farms require relatively flat or gently sloping land with good sun exposure and minimal shading. Based on the topography around Namur, the following areas might be more suitable for solar PV development:
1. The flatter areas to the north and west of Namur would likely be the most promising for large-scale solar installations. These regions offer more expansive, open spaces with fewer steep slopes, making it easier to position solar panels for optimal sun exposure.
2. Some of the broader river valley floors, particularly along the Meuse and Sambre, could potentially accommodate solar farms. However, care would need to be taken to avoid areas prone to flooding or those with high-quality agricultural land.
3. Gently sloping hillsides facing south or southwest might also be suitable for solar PV, as they would receive good sun exposure throughout the day. However, steeper slopes would likely be less practical due to installation challenges and potential shading issues.
It's important to note that while topography is a crucial factor in siting solar PV installations, other considerations such as land use, grid connectivity, environmental impact, and local regulations would also play significant roles in determining the most suitable locations for large-scale solar development in the Namur region.
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 29th of September 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.
