Emmen, Lucerne, Switzerland, situated at coordinates 47.0899, 8.2928, presents a varied landscape for solar energy generation throughout the year. This location in the Northern Temperate Zone experiences distinct seasonal fluctuations in solar power production, offering both opportunities and challenges for photovoltaic (PV) systems.

Seasonal Solar Performance

Summer stands out as the peak season for solar energy production in Emmen, Lucerne, with an impressive average of 5.71 kWh per day for each kilowatt of installed solar capacity. Spring follows closely, generating 4.85 kWh/day/kW. Autumn sees a significant drop to 2.99 kWh/day/kW, while winter experiences the lowest output at 1.52 kWh/day/kW.

The substantial variation between seasons highlights the importance of efficient system design and energy management strategies. While summer and spring offer abundant solar resources, autumn and particularly winter present challenges that require careful consideration.

Optimal Panel Tilt

For fixed panel installations in Emmen, Lucerne, the ideal tilt angle to maximize year-round solar production is 40 degrees facing south. This angle is calculated based on the location's latitude and solar elevation angles throughout the year, weighted by daily PV potential. Adopting this tilt angle helps optimize energy capture across all seasons, balancing the high summer sun with the lower winter sun angle.

Environmental Considerations

While Emmen's location is generally favorable for solar energy production, there are some environmental factors to consider:

• Snow accumulation in winter can significantly reduce panel efficiency. Installing panels at the recommended 40-degree angle helps with snow shedding, and regular maintenance may be necessary during heavy snowfall periods.
• Fog and low cloud cover, common in the Swiss Plateau region, can impact solar radiation reaching the panels, particularly in autumn and winter. While this cannot be prevented, using high-efficiency panels can help maximize energy capture even in diffuse light conditions.

To mitigate these challenges, consider using snow-resistant panel coatings and implementing a robust cleaning schedule. Additionally, incorporating a solar tracking system, although more expensive, could further enhance energy production by following the sun's path throughout the day.

In conclusion, while Emmen experiences significant seasonal variations in solar energy potential, with proper system design and maintenance, it remains a viable location for solar PV installations. The strong performance in summer and spring can help offset the reduced output in autumn and winter, making year-round solar energy production feasible and beneficial.

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 Emmen

Seasonal solar PV output for Latitude: 47.0899, Longitude: 8.2928 (Emmen, 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 Emmen, Switzerland

To maximize your solar PV system's energy output in Emmen, Switzerland (Lat/Long 47.0899, 8.2928) 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 Emmen, 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 Emmen, 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
30° South in Summer	50° South in Autumn	61° South in Winter	39° 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 Emmen, 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 Emmen, 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 Emmen, Switzerland

The topography around Emmen, Switzerland, is characterized by a diverse landscape that combines both flat areas and hilly terrain. Situated in the canton of Lucerne, Emmen lies in a valley near the confluence of the Kleine Emme and Reuss rivers. The surrounding area features a mix of gently rolling hills, forests, and agricultural land. To the north and east of Emmen, the landscape is relatively flat, with expansive farmlands and meadows dominating the scenery. This area is part of the Swiss Plateau, a region known for its lower elevation and more gentle terrain compared to the nearby Alps. The flat topography in this direction extends towards the city of Lucerne and Lake Lucerne to the south. As one moves towards the south and west of Emmen, the terrain becomes more varied and hilly. The foothills of the Alps begin to emerge, creating a more undulating landscape. These hills are often covered with lush forests and interspersed with small valleys and streams. The elevation gradually increases in this direction, leading towards the more mountainous regions of central Switzerland.

Suitability for Large-Scale Solar PV

When considering areas nearby that would be most suited to large-scale solar photovoltaic (PV) installations, the flatter regions to the north and east of Emmen present the most promising opportunities. These areas offer several advantages for solar energy production: Firstly, the relatively flat terrain in this direction provides ample space for the installation of large solar arrays without the need for extensive land modification. The open farmlands and meadows could potentially accommodate sizeable solar farms while minimizing the impact on natural habitats. Secondly, the lack of significant elevation changes in these areas means that there are fewer obstacles to block sunlight, ensuring more consistent solar exposure throughout the day. This is crucial for maximizing the efficiency and output of solar panels. Additionally, the proximity to existing infrastructure in and around Emmen, including roads and electrical grids, could facilitate the construction and integration of solar installations into the local power network. However, it's important to note that while these areas may be topographically suitable, other factors such as local regulations, land use policies, and environmental considerations would need to be carefully evaluated before implementing any large-scale solar projects. The balance between agricultural use and renewable energy production would also need to be carefully considered to ensure sustainable land management in the region.

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.

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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.