Dielsdorf, Zurich, Switzerland, located at coordinates 47.4752, 8.461, offers a moderate setting for solar energy production that varies significantly across seasons. This northern temperate location experiences substantial seasonal fluctuations in solar energy potential throughout the year.

Seasonal Solar Production

The solar energy output at this location follows a predictable seasonal pattern. Summer stands out as the most productive period, generating an average of 5.66 kWh per day for each kilowatt of installed solar capacity. Spring follows as the second most productive season with 4.79 kWh/day per kW installed. Autumn sees a significant decrease to 2.92 kWh/day, while winter production drops dramatically to just 1.46 kWh/day per kW of installed capacity.

This pattern means Dielsdorf's solar production is heavily weighted toward the warmer months, with summer and spring together accounting for much higher energy generation than autumn and winter combined. The nearly 4:1 ratio between summer and winter production highlights the seasonal variability at this latitude.

Optimal Panel Installation

For fixed solar panel installations in Dielsdorf, Zurich, the ideal tilt angle to maximize year-round energy production is 40 degrees facing South. This carefully calculated angle balances seasonal sun positions to optimize annual energy harvest, accounting for the Earth's elliptical orbit and the location's specific latitude.

Environmental Factors Affecting Production

Several environmental factors could impact solar production in Dielsdorf:

• Winter snow accumulation can significantly reduce output if panels become covered, requiring either manual clearing or steep installation angles to promote natural snow shedding
• Fog and low cloud cover, common in the Swiss northern valleys during autumn and winter, can further reduce the already limited winter production
• Alpine föhn winds may carry dust that can accumulate on panels, gradually reducing efficiency if not regularly cleaned

To mitigate these challenges, installations should incorporate regular maintenance schedules for cleaning, snow-shedding panel arrangements where possible, and potentially automated cleaning systems for larger installations. Some installations may benefit from slightly steeper tilt angles than the optimal 40 degrees if winter production is particularly valued, as this promotes better snow clearing at a small cost to annual production.

Overall, Dielsdorf represents a location with good but highly seasonal solar potential, requiring thoughtful system design to manage the significant winter production decrease while capitalizing on the abundant summer sunshine.

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 245 locations across Switzerland. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in Switzerland by location

Solar output per kW of installed solar PV by season in Dielsdorf

Seasonal solar PV output for Latitude: 47.4752, Longitude: 8.461 (Dielsdorf, Switzerland), 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 40° South in Dielsdorf, Switzerland

To maximize your solar PV system's energy output in Dielsdorf, Switzerland (Lat/Long 47.4752, 8.461) throughout the year, you should tilt your panels at an angle of 40° 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 Dielsdorf, Switzerland

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 Dielsdorf, Switzerland. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 40° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
31° South in Summer	50° South in Autumn	61° South in Winter	40° 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 Dielsdorf, Switzerland

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 Dielsdorf, Switzerland.

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 Dielsdorf, Switzerland

The topography around Dielsdorf, Switzerland presents a diverse landscape characterized by rolling hills, valleys, and moderate elevations typical of the Swiss Plateau (Mittelland) region. Located in the canton of Zürich, approximately 15 kilometers northwest of Zürich city, Dielsdorf sits at an elevation of about 450 meters above sea level.

Landscape Features

The terrain surrounding Dielsdorf features gentle to moderate slopes with some more pronounced elevations to the northwest where the landscape begins to transition toward the Jura Mountains. The area is part of a broader valley system with the Wehntal (Wehn Valley) being a prominent local feature. This valley runs in a northwest-southeast direction, creating a natural corridor through the otherwise hilly terrain. To the east and northeast of Dielsdorf, the landscape becomes more undulating with a series of small hills and ridges. The Lägern ridge, a prominent eastward extension of the Jura Mountains, lies just to the south of Dielsdorf and rises to approximately 866 meters above sea level, creating a distinctive topographical boundary. The area also contains numerous small streams and drainage patterns that have carved shallow valleys throughout the region, contributing to the varied topography. Agricultural land dominates many of the gentler slopes and valley floors, while steeper areas often support forest cover.

Solar PV Suitability

For large-scale solar PV installations, several areas near Dielsdorf offer promising potential based on topographical considerations: The south-facing slopes of the Wehntal valley provide favorable orientation for solar energy collection. These areas benefit from good sun exposure throughout the day while being protected from some northern winds by the valley configuration. The relatively flat agricultural areas to the northeast of Dielsdorf, extending toward Niederglatt and Oberglatt, present opportunities for large-scale installations due to their minimal shading and relatively level terrain, which simplifies construction and maintenance. Some of the elevated plateaus to the west and southwest of Dielsdorf also merit consideration. These higher areas experience less fog than the valley bottoms during autumn and winter months, potentially increasing overall solar radiation capture. Areas to avoid would include the northern slopes of the Lägern ridge, which receive significantly reduced direct sunlight due to their orientation, and the densely forested sections scattered throughout the region, where clearing would create environmental concerns. The gentle south-facing hillsides between Dielsdorf and Regensberg offer a good compromise between favorable solar orientation and accessibility, making them particularly suitable candidates for solar development. It's worth noting that while topography is favorable in many locations, actual development would need to balance agricultural preservation concerns, as much of the flat land in the region is currently used for farming. The most promising areas from a purely topographical perspective would be moderately sloped, south-facing areas that are not currently under intensive agricultural use or environmentally protected.

Switzerland solar PV Stats as a country

Switzerland ranks 25th in the world for cumulative solar PV capacity, with 3,449 total MW's of solar PV installed. This means that 4.70% of Switzerland's total energy as a country comes from solar PV (that's 16th in the world). Each year Switzerland is generating 399 Watts from solar PV per capita (Switzerland ranks 6th in the world for solar PV Watts generated per capita). [source]

Are there incentives for businesses to install solar in Switzerland?

Yes, there are several incentives for businesses wanting to install solar energy in Switzerland. The Swiss Federal Office of Energy (SFOE) offers a range of financial support measures for businesses that want to invest in renewable energy sources such as solar power. These include grants, loans and tax deductions. Additionally, the Swiss government has set up a feed-in tariff system which guarantees a fixed price for electricity generated from renewable sources such as solar power. This helps to make investing in solar energy more attractive for businesses.

Do you have more up to date information than this on incentives towards solar PV projects in Switzerland? Please reach out to us and help us keep this information current. Thanks!

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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.