Brunnen, Schwyz, Switzerland, situated at latitude 46.9989 and longitude 8.5993 in the Northern Temperate Zone, offers varying potential for solar energy generation throughout the year. This location experiences significant seasonal fluctuations in solar electricity production that prospective solar panel owners should consider.

Seasonal Solar Production

Solar panels in Brunnen would produce their highest output during summer months, generating approximately 5.63 kWh per day for each kilowatt of installed capacity. Spring follows as the second most productive season with 5.04 kWh/day per kW installed. Production drops considerably during autumn to 3.08 kWh/day, while winter sees the lowest generation at just 1.97 kWh/day per kW of installed capacity.

This pattern creates a roughly 3:1 ratio between summer and winter production, indicating that while solar remains viable year-round, winter months will produce significantly less energy. Homeowners should account for this seasonal variation when sizing their systems to meet annual energy needs.

Optimal Panel Installation

For fixed solar panel installations in Brunnen, Schwyz, the ideal tilt angle to maximize year-round energy production is 41 degrees facing South. This carefully calculated angle optimizes the balance between summer and winter solar gain, accounting for the location's specific latitude and seasonal sun paths.

With properly angled panels, residents can expect to capture maximum available sunlight across all seasons, though the significant winter reduction remains unavoidable due to the location's northern latitude.

Environmental Considerations

Several environmental factors in Brunnen could potentially impact solar production:

• Snow accumulation during winter months may temporarily reduce output unless panels are installed with sufficient tilt for snow to slide off naturally
• Alpine fog conditions, particularly common in autumn and winter in this region, can reduce solar irradiance reaching panels
• Potential shading from surrounding mountains, depending on the specific installation location within Brunnen

To mitigate these challenges, solar installations in Brunnen should incorporate snow-shedding mounting systems, regular cleaning procedures, and careful site assessment to minimize mountain shadow effects. Microinverters or power optimizers can also help maintain production when partial shading occurs.

Despite these seasonal challenges, Brunnen's location offers good solar potential, particularly from March through September, making it a viable location for solar PV systems when properly designed with these local factors in mind.

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 Brunnen

Seasonal solar PV output for Latitude: 46.9989, Longitude: 8.5993 (Brunnen, 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 Brunnen, Switzerland

To maximize your solar PV system's energy output in Brunnen, Switzerland (Lat/Long 46.9989, 8.5993) 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 Brunnen, 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 Brunnen, 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 Brunnen, 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 Brunnen, 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 Brunnen, Switzerland

Brunnen, Switzerland, nestled at the northern end of Lake Lucerne (also known as Vierwaldstättersee), presents a dramatic topographical setting characteristic of central Switzerland. The landscape is defined by the interplay between the deep blue waters of Lake Lucerne and the imposing mountains that rise steeply from its shores. Brunnen itself sits on a small plain where the Muota River enters the lake, creating one of the few relatively flat areas in this otherwise vertical terrain. The topography surrounding Brunnen is dominated by several significant mountains. To the east rises the imposing Fronalpstock (1,922m) and the Rophaien (2,078m), while the Mythen peaks (Grosser Mythen at 1,898m and Kleiner Mythen at 1,811m) stand prominently to the northeast. The western horizon features the Bürgenstock ridge and further south, the massive Rigi (1,798m) dominates the landscape. These mountains form part of the Swiss Prealps, representing the transition between the Swiss Plateau and the higher Alps further south.

Valley and Water Features

The topography is further characterized by several valleys that converge near Brunnen. The Muotatal (Muota Valley) extends eastward, while the broader Schwyzer basin opens to the northeast. Lake Lucerne itself occupies a complex, fjord-like basin formed through glacial processes during the last ice age. The lake branches into several arms, with Brunnen positioned at the junction of the Gersauer Basin and the Urner Basin (also called the Bay of Uri). This varied terrain creates distinct microclimates throughout the region. South-facing slopes receive more direct sunlight, while narrow valleys can experience significant shadowing effects depending on the time of year. The lake also moderates temperatures in its immediate vicinity.

Solar Potential Areas

When considering areas suitable for large-scale solar photovoltaic installations near Brunnen, several factors must be considered including slope orientation, shadowing effects, land availability, and accessibility. The most promising areas for large-scale solar PV development would be: The gentler south-facing slopes north of Schwyz, approximately 5-7 km northeast of Brunnen. These areas benefit from favorable sun exposure and relatively moderate inclines compared to the steeper mountains directly surrounding Brunnen. The broader valley floor areas around Schwyz and Ingenbohl offer some potential, though these areas face competition from agricultural and urban land uses. These locations have fewer shadowing issues than the narrow valleys and benefit from better infrastructure connections. The upper plateaus of Morschach, situated above Brunnen to the southeast at around 700-900m elevation, present interesting possibilities. These areas combine good solar exposure with less valuable agricultural land. Less suitable are the steep western faces of mountains east of Brunnen, many north-facing slopes throughout the region, and the narrow sections of valleys where surrounding peaks cast significant shadows during winter months.

Topographical Challenges

The mountainous topography around Brunnen presents considerable challenges for large-scale solar development. The steep slopes that characterize much of the region make construction and maintenance difficult. Additionally, many of the sunniest south-facing slopes are extremely steep, presenting engineering challenges. The fragmented nature of suitable land parcels is another consideration. Unlike flatter regions where large contiguous solar farms might be developed, any significant solar deployment around Brunnen would likely need to be distributed across multiple smaller sites. Winter snow accumulation must also be factored into any solar planning. Higher elevation sites, while potentially benefiting from less fog than valley locations, must contend with longer periods of snow cover which can significantly reduce generation during winter months. Finally, the exceptional natural beauty of the landscape around Brunnen means that visual impact assessments would be critical for any large-scale solar development, with careful attention needed to preserve the scenic qualities that make this region so distinctive.

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.