Oberwil, Switzerland, situated at latitude 47.5119 and longitude 7.5579, presents a mixed picture for solar energy generation throughout the year. Located in the Northern Temperate Zone, this area experiences distinct seasonal variations that significantly impact solar PV output.

Seasonal Solar Performance

Summer stands out as the most productive season, with an impressive daily output of 5.74 kWh per kW of installed solar capacity. Spring follows closely, generating 4.89 kWh/day. Autumn sees a notable decrease to 3.02 kWh/day, while winter performance drops dramatically to just 1.45 kWh/day.

These figures highlight the substantial fluctuations in solar energy production throughout the year. The long, sunny days of summer provide ideal conditions for solar generation, making it the prime season for harvesting solar energy in Oberwil. Spring and autumn offer moderate production levels, while winter presents significant challenges due to shorter days and less direct sunlight.

Optimal Panel Installation

To maximize year-round solar energy production in Oberwil, fixed solar panels should be installed at a tilt angle of 41 degrees facing south. This angle is calculated to optimize the panels' exposure to sunlight throughout the year, taking into account the location's latitude and seasonal sun paths.

Environmental Factors and Mitigation

While Oberwil's location is generally favorable for solar energy, there are some environmental factors that could impact production:

• Snow accumulation in winter can significantly reduce panel efficiency. Installing panels at the recommended angle helps with snow shedding, and regular maintenance to clear snow may be necessary.
• Fog and low cloud cover, common in the region, can reduce solar irradiance. While this can't be prevented, using high-efficiency panels can help maximize energy capture even in less-than-ideal conditions.

To mitigate these challenges, consider using snow-resistant panel coatings and implementing a robust cleaning schedule. Additionally, a solar tracking system could be employed to further optimize energy capture, particularly during the less productive seasons.

In conclusion, while Oberwil's location presents some challenges for year-round solar energy production, particularly in winter, it remains a viable option with strong potential during the spring and summer months. Proper installation techniques and regular maintenance can help maximize energy output throughout the year.

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 Oberwil

Seasonal solar PV output for Latitude: 47.5119, Longitude: 7.5579 (Oberwil, 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 41° South in Oberwil, Switzerland

To maximize your solar PV system's energy output in Oberwil, Switzerland (Lat/Long 47.5119, 7.5579) throughout the year, you should tilt your panels at an angle of 41° 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 Oberwil, 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 Oberwil, Switzerland. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 41° 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	51° 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 Oberwil, 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 Oberwil, 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 Oberwil, Switzerland

The topography around Oberwil, Switzerland, is characterized by a diverse landscape that combines gently rolling hills, fertile plains, and forested areas. Situated in the canton of Basel-Landschaft, Oberwil lies in the northwestern part of the country, close to the borders of France and Germany. The terrain in this region is part of the Jura foothills, which gradually transition into the Swiss Plateau to the east. To the west and northwest of Oberwil, the land begins to rise into the Jura Mountains, creating a more rugged and elevated landscape. These hills and low mountains are often covered in dense forests, providing a stark contrast to the more open areas surrounding the town. To the east and southeast, the terrain becomes flatter, with expansive agricultural fields and meadows dominating the landscape. The area around Oberwil is crisscrossed by small streams and rivers, which have carved shallow valleys into the landscape over time. These waterways contribute to the region's undulating character, creating natural boundaries between different land uses and settlements.

Potential Areas for Large-Scale Solar PV

When considering locations for large-scale solar photovoltaic (PV) installations near Oberwil, several factors come into play. The most suitable areas would typically be those with minimal shading, good sun exposure, and relatively flat terrain to reduce installation costs and maximize energy production. The agricultural plains to the east and southeast of Oberwil present promising opportunities for solar PV development. These areas often feature large, open fields with few obstructions, providing ample space for solar arrays. The relatively flat terrain in this direction would simplify installation and reduce the need for extensive earthworks. Some of the gentler slopes on the hills surrounding Oberwil could also be considered for solar PV installations. South-facing hillsides, in particular, could offer excellent sun exposure throughout the day. However, care would need to be taken to avoid areas with dense forest cover or steep gradients. It's important to note that while the topography plays a crucial role in determining suitable locations for solar PV, other factors such as land ownership, proximity to electrical infrastructure, and local regulations would also need to be considered. Additionally, any large-scale solar development would need to be balanced with the preservation of the region's natural beauty and agricultural heritage.

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.