Solar Energy Potential in Jette, Brussels Capital, Belgium
The location of Jette, Brussels Capital, Belgium, situated at latitude 50.871 and longitude 4.3356, presents a moderate potential for solar energy generation throughout the year. This Northern Temperate Zone location experiences significant seasonal variations in solar output, which impacts the overall efficiency of solar PV systems. Summer months offer the highest solar energy potential, with an average daily output of 5.20 kWh per kW of installed solar capacity. This period is ideal for maximizing solar energy production, as longer days and higher sun angles contribute to increased efficiency. Spring follows as the second-most productive season, yielding 4.57 kWh per day per kW installed. This season sees a noticeable improvement in solar output compared to the winter months, making it a favorable time for energy generation. Autumn experiences a decline in solar production, with an average daily output of 2.40 kWh per kW installed. While less efficient than summer and spring, this season still offers moderate potential for solar energy generation. Winter presents the greatest challenge for solar PV systems in Jette, Brussels Capital, with a significantly reduced daily output of 1.13 kWh per kW installed. Shorter days, lower sun angles, and increased cloud cover contribute to this substantial decrease in energy production.Optimizing Solar Panel Installation
To maximize year-round solar energy production in Jette, Brussels Capital, it is recommended to install fixed solar panels at a tilt angle of 43 degrees facing south. This optimal angle helps balance energy generation across seasons, capturing more sunlight during winter months while still maintaining efficiency during summer.Environmental and Weather Factors
Several factors can impact solar energy production in Jette: 1. Cloud cover: Belgium's climate is characterized by frequent cloudy days, which can reduce solar panel efficiency. 2. Rainfall: The region experiences regular precipitation, which may temporarily decrease solar output. 3. Air pollution: Urban air pollution in the Brussels metropolitan area can slightly reduce solar irradiance reaching the panels. To mitigate these factors, consider the following preventative measures:- Use high-efficiency solar panels designed to perform well in diffuse light conditions
- Install a robust cleaning system or schedule regular panel cleaning to remove dirt and debris
- Implement micro-inverters or power optimizers to minimize the impact of partial shading
- Consider a tracking system to maximize sun exposure throughout the day, especially during winter 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 Jette
Seasonal solar PV output for Latitude: 50.871, Longitude: 4.3356 (Jette, 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 Jette, Belgium
To maximize your solar PV system's energy output in Jette, Belgium (Lat/Long 50.871, 4.3356) 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 Jette, 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 Jette, 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 | 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 Jette, 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 Jette, 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 Jette, Belgium
The topography around Jette, Belgium, a municipality located in the northwestern part of Brussels, is characterized by gently rolling terrain typical of the Belgian lowlands. This area is part of the larger Brussels-Capital Region, which sits in a shallow valley formed by the Senne River and its tributaries. The landscape is predominantly urban and suburban, with a mix of residential neighborhoods, parks, and some remaining pockets of agricultural land. Jette itself is situated on slightly elevated ground compared to the city center of Brussels, with subtle variations in elevation throughout the area. The terrain gradually slopes downward towards the southeast, where the Senne River flows. To the north and west of Jette, the land becomes slightly more undulating, with small hills and shallow valleys creating a modest relief.
Nearby Areas Suitable for Large-Scale Solar PV
When considering areas nearby that would be most suited to large-scale solar photovoltaic (PV) installations, it's important to look beyond the immediate urban environment of Jette. The densely populated nature of the Brussels-Capital Region makes it challenging to find expansive open spaces within the city limits. However, moving outward from Jette, particularly to the west and northwest, the landscape becomes more open and rural. The Flemish Brabant province, which surrounds the Brussels-Capital Region, offers more potential for large-scale solar PV projects. This area features larger tracts of agricultural land and less densely populated zones that could accommodate solar installations. Specifically, the regions around Asse, Merchtem, and Wemmel, located northwest of Jette, present opportunities for solar development. These areas have relatively flat terrain with fewer obstructions, making them suitable for solar panel arrays. The agricultural nature of these regions also means there's less competition for land use compared to urban areas. It's worth noting that while these areas may be topographically suitable, the implementation of large-scale solar projects would require careful consideration of local zoning laws, environmental regulations, and the impact on agricultural activities. Additionally, the climate in Belgium, characterized by frequent cloud cover and moderate solar radiation, means that solar PV installations may not be as efficient as in sunnier regions. Nevertheless, with advancing technology and the push for renewable energy, these nearby areas represent the most promising locations for potential large-scale solar PV development in the vicinity of Jette.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: Monday 24th of March 2025
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.




