Cham, Zug, Switzerland, situated at coordinates 47.1968° N, 8.4585° E, presents a mixed picture for solar energy generation throughout the year. This location in the Northern Temperate Zone experiences significant seasonal variations in solar output, which impacts the overall efficiency of photovoltaic (PV) systems.

Seasonal Solar Performance

The solar energy production in Cham follows a predictable pattern aligned with the changing seasons:

• Summer: 5.71 kWh/day per kW installed
• Spring: 4.85 kWh/day per kW installed
• Autumn: 2.99 kWh/day per kW installed
• Winter: 1.52 kWh/day per kW installed

Summer and spring clearly stand out as the most productive seasons for solar energy generation in Cham. During these months, longer daylight hours and higher sun angles contribute to increased solar panel efficiency.

Optimal Panel Positioning

For fixed panel installations in Cham, Zug, the ideal tilt angle to maximize year-round solar production is 40 degrees facing south. This angle helps to optimize energy capture across all seasons, balancing the high summer sun with the lower winter sun angle.

Challenges and Solutions

The primary challenge for solar energy production in Cham is the significant drop in output during autumn and winter. The reduced daylight hours and lower sun angle during these seasons result in less than a third of the summer output. To mitigate this issue, consider installing panels with high low-light performance and ensuring regular cleaning to maximize efficiency in less ideal conditions.

Another factor to consider is potential snow cover during winter months. While not always significant, snow accumulation can temporarily reduce panel output. Installing panels at the recommended 40-degree angle can help with natural snow shedding. Additionally, using specialized coatings or heating elements can prevent snow buildup in severe cases.

Conclusion

While Cham's location is not ideal for year-round solar energy production, it still offers substantial potential, especially during spring and summer. By optimizing panel angle, choosing appropriate equipment, and implementing preventative measures, solar PV systems can provide a valuable contribution to the local energy mix, despite the seasonal variations.

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 Cham

Seasonal solar PV output for Latitude: 47.1968, Longitude: 8.4585 (Cham, 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 Cham, Switzerland

To maximize your solar PV system's energy output in Cham, Switzerland (Lat/Long 47.1968, 8.4585) 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 Cham, 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 Cham, 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 Cham, 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 Cham, 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 Cham, Switzerland

The area around Cham, Switzerland, is characterized by a diverse and picturesque topography typical of the Swiss Plateau region. Cham itself is situated on relatively flat terrain near the northern shore of Lake Zug (Zugersee), which provides a beautiful backdrop to the south.

To the north and east of Cham, the landscape gradually rises into gently rolling hills covered with a mix of farmland, meadows, and patches of forest. These hills are part of the larger Swiss Plateau, which extends across much of central Switzerland. The terrain in this direction remains relatively gentle, with occasional small valleys and streams cutting through the landscape.

To the south and west, the topography becomes more dramatic as it transitions towards the Alpine foothills. The land rises more steeply, forming higher hills and small mountains. These areas are often covered in denser forests and feature more rugged terrain. In the distance, on clear days, one can see the towering peaks of the Swiss Alps, which form an impressive backdrop to the region.

When considering areas nearby that would be most suited to large-scale solar PV (photovoltaic) installations, several factors come into play. The ideal locations would be:

1. The flatter areas to the north and east of Cham, where the gently rolling hills provide ample space and good sun exposure. These areas are less likely to be shaded by nearby mountains and could accommodate larger installations.
2. South-facing slopes on the hills surrounding Cham, particularly those that are not heavily forested. These locations would receive more direct sunlight throughout the day, increasing the efficiency of solar panels.
3. Any large, open spaces that are not prime agricultural land or protected natural areas. This could include former industrial sites, unused fields, or areas alongside major infrastructure like highways or railways.

It's important to note that while the topography around Cham offers potential for solar PV installations, any large-scale project would need to carefully consider environmental impact, local regulations, and the preservation of the region's natural beauty. Switzerland has strict land-use policies, so any significant solar development would require thorough planning and approval processes.

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.