Solar PV Analysis of Villach, Austria
Villach, Carinthia, Austria, situated at 46.6175°N, 13.8358°E, presents a mixed picture for solar PV energy generation throughout the year. This location in the Northern Temperate Zone experiences significant seasonal variations in solar energy production.
Seasonal Solar Performance
Summer stands out as the most productive season, with an impressive 6.19 kWh per day for each kW of installed solar capacity. Spring follows as the second-best season, generating 4.75 kWh daily. Autumn sees a considerable drop to 3.19 kWh per day, while winter performance plummets to a mere 2.00 kWh daily.
These figures highlight the stark contrast between summer and winter productivity, with summer generating more than three times the energy of winter days. The shoulder seasons of spring and autumn offer moderate performance, bridging the gap between the extremes.
Optimal Panel Positioning
To maximize year-round energy production, fixed solar panels in Villach should be tilted at a 40-degree angle facing south. This orientation helps balance the seasonal variations, capturing more sunlight during the less productive winter months while still benefiting from the abundant summer sunshine.
Environmental Considerations
Villach's location in the Eastern Alps presents some challenges for solar energy production. The mountainous terrain can lead to shading issues, particularly during winter when the sun's path is lower in the sky. Additionally, the region experiences significant snowfall, which can temporarily reduce panel efficiency.
To mitigate these factors, consider the following measures:
- Conduct thorough site assessments to minimize shading from surrounding landscape and structures.
- Install panels at a steeper angle to promote snow sliding off and to capture more light during winter months.
Despite these challenges, Villach's location still offers substantial potential for solar energy generation, particularly from late spring through early autumn. With proper planning and installation techniques, a solar PV system can provide significant energy contributions throughout the year, helping to offset the reduced winter production.
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 124 locations across Austria. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Austria by location
Solar output per kW of installed solar PV by season in Villach
Seasonal solar PV output for Latitude: 46.6175, Longitude: 13.8358 (Villach, Austria), 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 Villach, Austria
To maximize your solar PV system's energy output in Villach, Austria (Lat/Long 46.6175, 13.8358) 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 Villach, Austria
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 Villach, Austria. 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 | 60° 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 Villach, Austria
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 Villach, Austria.
Our calculation method
- Solar Position:
We determine the Sun's position on the Winter solstice using the location's latitude and solar declination. - Shadow Projection:
We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle. - 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 Villach, Austria
The area around Villach, Austria, is characterized by a diverse and picturesque topography. Situated in the southern part of the country, Villach is nestled in a valley where the Drava River meets the Gail River. The city is surrounded by the Carnic Alps to the south and the Karawanks mountain range to the southeast, creating a stunning backdrop of rugged peaks and forested slopes.
To the north and west of Villach, the landscape becomes more gentle, with rolling hills and expansive plateaus. This area is part of the Klagenfurt basin, which features a mix of agricultural land, meadows, and scattered woodlands. The region also boasts several lakes, including the nearby Lake Ossiach and the larger Lake Wörth to the east.
When considering areas suitable for large-scale solar PV installations near Villach, the most promising locations would likely be found in the more open, flatter areas to the north and northwest of the city. These regions offer several advantages for solar energy production:
1. Gently sloping terrain: The gradual inclines in this area provide good exposure to sunlight throughout the day, maximizing the potential for solar energy capture.
2. Less shadowing: Unlike the mountainous regions to the south, these areas have fewer tall obstacles that could cast shadows on solar panels, ensuring more consistent energy production.
3. Easier access: The flatter terrain makes it simpler to construct and maintain large solar installations, as well as to connect them to existing power grids.
4. Lower agricultural value: Some of these areas may be less suitable for intensive farming, making them ideal candidates for alternative land use such as solar farms.
It's important to note that while these areas may be topographically suitable, any large-scale solar PV project would need to consider additional factors such as local zoning laws, environmental impact assessments, and the capacity of the existing power infrastructure to handle the increased energy production.
Austria solar PV Stats as a country
Austria ranks 28th in the world for cumulative solar PV capacity, with 2,692 total MW's of solar PV installed. This means that 3.40% of Austria's total energy as a country comes from solar PV (that's 25th in the world). Each year Austria is generating 302 Watts from solar PV per capita (Austria ranks 14th in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Austria?
Yes, there are several incentives for businesses wanting to install solar energy in Austria. The Austrian government offers a range of financial support measures, including grants and loans, as well as tax breaks and other incentives. Additionally, the Austrian Energy Agency (AEA) provides information on funding opportunities for renewable energy projects. Furthermore, businesses can benefit from the Feed-in Tariff (FiT), which guarantees a fixed price for electricity generated from renewable sources such as solar energy.
Do you have more up to date information than this on incentives towards solar PV projects in Austria? Please reach out to us and help us keep this information current. Thanks!
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Wednesday 11th of September 2024
Last Updated: Monday 21st of July 2025
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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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