Zemst, Flanders, Belgium, located at latitude 50.9803 and longitude 4.4669 in the Northern Temperate Zone, offers varying potential for solar energy generation throughout the year. This location experiences significant seasonal fluctuations in solar power production that are typical for northern European regions.

Seasonal Solar Production

Solar panels in Zemst produce their highest output during summer months, generating an average of 5.20 kWh per day for each kilowatt of installed capacity. Spring follows as the second most productive season with 4.57 kWh/day per kW installed. Production drops considerably in autumn to 2.40 kWh/day, while winter sees the lowest generation at just 1.13 kWh/day per kW installed.

This pattern creates a nearly 5:1 ratio between the best and worst producing seasons, with summer generating more than four times the electricity of winter months. The substantial difference highlights the seasonal nature of solar production at this Belgian location.

Optimal Panel Installation

For fixed solar panel installations in Zemst, Flanders, the ideal tilt angle to maximize year-round electricity production is 43 degrees facing South. This specific angle optimizes the annual solar harvest by accounting for the location's latitude and seasonal solar paths across the sky.

Environmental Considerations

Several environmental factors in Zemst may impact solar production:

• Cloud cover and precipitation are significant in Belgium, with the region experiencing approximately 200 rainy days annually, reducing solar efficiency.
• Winter snow accumulation can temporarily cover panels, though this coincides with already low production months.
• Atmospheric pollution from nearby Brussels metropolitan area may reduce panel efficiency through particulate buildup.

Preventative Measures

To maximize solar production in Zemst despite these challenges, several approaches are recommended:

• Install self-cleaning panels or implement regular cleaning schedules to address dust and pollution buildup.
• Consider slightly steeper panel angles (45-50 degrees) if winter production is prioritized, as this promotes snow shedding and captures more low-angle winter sunlight.
• Utilize microinverters or power optimizers to minimize the impact of partial shading from clouds or nearby obstacles.
• Implement proper drainage systems to prevent water accumulation on panels after rain events.

While Zemst's location isn't ideal for year-round consistent solar production, modern panel technology and proper installation techniques can still make solar energy a viable renewable option, particularly from March through September when production levels are substantially higher.

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 Zemst

Seasonal solar PV output for Latitude: 50.9803, Longitude: 4.4669 (Zemst, 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 Zemst, Belgium

To maximize your solar PV system's energy output in Zemst, Belgium (Lat/Long 50.9803, 4.4669) 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 Zemst, 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 Zemst, 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 Zemst, 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 Zemst, Belgium.

Our calculation method

1. Solar Position:
   We determine the Sun's position on the Winter solstice using the location's latitude and solar declination.
2. Shadow Projection:
   We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle.
3. 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 Zemst, Belgium

Zemst, Belgium is located in the province of Flemish Brabant in the northern part of the country. The topography of Zemst and its surrounding areas is characterized by a predominantly flat landscape, which is typical of the Flemish lowlands. This area sits at a relatively low elevation, generally between 10 to 20 meters above sea level. The terrain consists mainly of gentle undulations rather than significant hills or mountains. The region around Zemst is part of the extensive Belgian lowland plain that stretches across much of northern Belgium. This landscape has been shaped over centuries by the Zenne River and its tributaries, which flow through the area. The river valleys create subtle depressions in the otherwise flat terrain. The natural drainage patterns have historically influenced settlement patterns and land use in the region.

Local Terrain Features

The immediate vicinity of Zemst features agricultural fields, meadows, and scattered woodland areas. The soil composition is primarily alluvial, resulting from centuries of river deposits. This creates fertile ground that has long been used for farming activities. Small patches of forest and tree lines often mark property boundaries or follow waterways, creating a patchwork appearance when viewed from above. Several canal systems, including the Brussels-Scheldt Maritime Canal, cut through the landscape near Zemst, adding man-made linear features to the natural topography. These waterways have played an important role in the development of the area, both for transportation and water management purposes.

Suitability for Solar PV Development

When considering areas near Zemst for large-scale solar PV development, several factors related to the topography make certain locations more suitable than others. The flat terrain is generally advantageous for solar installations, as it minimizes the need for extensive grading and preparation work. This flatness also reduces the likelihood of one solar panel casting shadows on others, which would decrease efficiency. The most suitable areas would be the extensive agricultural fields to the north and east of Zemst. These locations offer large, uninterrupted spaces with minimal shading from trees or buildings. The open farmland provides good exposure to sunlight throughout the day. Additionally, these areas typically have existing access roads, which would facilitate construction and maintenance of solar facilities. Areas to avoid would include the wetlands and flood-prone zones near the Zenne River and its tributaries. These locations experience periodic flooding and have higher water tables, which could pose risks to electrical infrastructure. Similarly, the more densely wooded areas, though limited in this region, would require clearing and would have greater environmental impact if developed for solar purposes.

Topographical Considerations for Installation

The flat topography means that solar arrays in this region would typically be installed with a fixed tilt rather than requiring complex tracking systems to accommodate varying terrain. The consistent elevation across potential sites simplifies design and installation processes. Drainage considerations are important despite the flat terrain. The clay-rich soils in parts of the region can lead to poor drainage after heavy rainfall. Solar installations would need appropriate drainage systems to prevent water accumulation around foundations and electrical components. The low-lying nature of the landscape around Zemst means that fog can be more common during certain seasons, particularly autumn and winter mornings. While this atmospheric condition affects solar radiation temporarily, it generally dissipates as the day progresses and doesn't significantly impact the overall suitability of the area for solar development.

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

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.