Colombier, Switzerland presents a moderately favorable location for year-round solar PV energy generation, though with significant seasonal variations typical of its Northern Temperate Zone position.

Seasonal Solar Performance

The solar output data reveals distinct seasonal patterns at this location. Summer delivers the strongest performance at 6.01 kWh per day per kW of installed capacity, making it the prime solar generation period. Spring follows as the second-best season with 4.89 kWh per day per kW, offering substantial energy production as daylight hours increase and solar angles improve. Autumn sees a notable decline to 3.10 kWh per day per kW as the sun's path lowers and weather conditions typically become less favorable. Winter presents the most challenging period with only 1.63 kWh per day per kW, representing less than 30% of summer output. For optimal year-round energy capture from a fixed panel installation at this location, panels should be tilted at 40 degrees facing south. This angle maximizes total annual production by balancing the sun's varying seasonal positions throughout the year.

Local Factors Affecting Solar Production

Several environmental and weather factors in the Colombier area can significantly impact solar energy generation:

• Alpine weather patterns bringing frequent cloud cover and precipitation, particularly during autumn and winter months
• Snow accumulation on panels during winter, which can completely block solar collection
• Morning fog from nearby Lake Neuchâtel, which can reduce early-day solar production
• Potential shading from surrounding terrain or vegetation, especially important given the lower winter sun angles

Preventative Installation Measures

To maximize energy production despite these challenges, several installation strategies prove effective. Installing panels at the optimal 40-degree tilt helps snow slide off more easily while improving overall collection efficiency. Ensuring adequate spacing between panel rows prevents snow buildup and shadow interference. Selecting panels with anti-reflective coatings and good low-light performance helps capture available energy during cloudy conditions. Installing a monitoring system allows for quick identification of snow-covered or underperforming panels that may need clearing. Proper site selection away from potential shading sources becomes crucial, and regular maintenance scheduling during winter months ensures panels remain clear of snow and debris. These measures can help maintain more consistent energy production throughout the year's varying conditions.

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 Colombier

Seasonal solar PV output for Latitude: 46.9655, Longitude: 6.8695 (Colombier, 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 Colombier, Switzerland

To maximize your solar PV system's energy output in Colombier, Switzerland (Lat/Long 46.9655, 6.8695) 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 Colombier, 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 Colombier, 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	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 Colombier, 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 Colombier, 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 Colombier, Switzerland

Topographical Features of Colombier, Switzerland

Colombier sits in the western part of Switzerland, nestled along the northwestern shore of Lake Neuchâtel in the Canton of Neuchâtel. The settlement occupies a relatively flat position at approximately 430 meters above sea level, positioned between the expansive waters of Switzerland's largest lake entirely within the country's borders and the rising terrain of the Jura Mountains to the northwest. The immediate landscape around Colombier is characterized by gentle slopes and rolling terrain typical of the Swiss Plateau region. To the southeast, Lake Neuchâtel stretches for over 38 kilometers, creating a significant flat water surface that influences the local microclimate. The lakeshore areas are predominantly flat with minimal elevation changes, making them naturally suitable for large-scale installations requiring level ground. Moving northwest from the lake, the terrain gradually rises toward the Jura mountain range. These are not the dramatic Alpine peaks found elsewhere in Switzerland, but rather more modest hills and ridges with rounded profiles. The Jura Mountains in this region typically reach elevations between 1,000 and 1,600 meters, creating a series of parallel ridges running northeast to southwest.

Agricultural and Urban Land Use Patterns

The area surrounding Colombier features a mix of agricultural land, small settlements, and forested areas. Much of the terrain between the lake and the lower slopes of the Jura consists of cultivated fields and pastureland, with relatively few steep gradients that would complicate large-scale development. The agricultural areas are typically divided into moderate-sized parcels, though some larger continuous areas exist that could potentially accommodate substantial installations. Small villages and towns dot the landscape at regular intervals, connected by a network of roads that generally follow the natural contours of the land. The urban development tends to concentrate near the lakeshore and in valley bottoms, leaving significant areas of open land on the gentler slopes and plateau areas.

Optimal Areas for Large-Scale Solar Development

The most promising locations for extensive solar installations lie on the broad, gently sloping plateau areas situated between Colombier and the foothills of the Jura Mountains. These areas combine several advantageous characteristics: they offer substantial continuous land areas without significant topographical obstacles, maintain reasonable accessibility via existing road networks, and sit at elevations that provide good exposure while remaining practical for construction and maintenance activities. The agricultural plains extending northeast and southwest of Colombier present particularly suitable conditions. These areas feature minimal slopes, good drainage, and are positioned away from the immediate lakeshore where development restrictions might apply. The terrain here allows for optimal panel orientation and spacing while minimizing the earthwork required for installation. Areas on the lower slopes of the Jura Mountains, particularly those with southern exposure, also offer excellent potential. While these locations involve more varied topography, many feature natural terracing and moderate gradients that can accommodate large installations. The slightly elevated positions of these sites can provide advantages in terms of air circulation and reduced fog interference from the lake. The flat areas closer to Lake Neuchâtel, while topographically ideal, may face greater competition from existing urban development and potential environmental considerations related to the lake ecosystem. However, some agricultural areas near the shore could still provide viable options for development, particularly those that are not in immediate proximity to sensitive wetland areas or established communities.

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.