Solar PV Analysis of Graz, Austria
Graz, Styria, Austria demonstrates a promising potential for solar PV power generation. In this city, the average daily energy production per kW of installed solar varies with the seasons: it is highest in summer at 5.97 kWh/day, drops to 2.98 kWh/day in autumn and 1.69 kWh/day in winter before rising again to 4.30 kWh/day during spring.
The ideal angle for fixed panel installations at this location is a tilt of 40 degrees facing South which optimizes sunlight exposure throughout the year.
However, some local factors could potentially affect solar production efficiency. Heavy rain or snowfall are among these factors; they can limit sunlight exposure and increase cooling effects on the panels which may reduce their output capacity.
To mitigate these impediments and ensure greater energy production from your solar installation, consider implementing certain preventative measures such as installing adjustable mounts that allow you to change the panel’s angle depending on seasonal variations or weather conditions; this will help maximize sun exposure year-round despite changes in weather patterns.
Additionally, incorporating effective snow removal techniques into your maintenance routine can prevent accumulation that might block sunlight from reaching your panels during winter months when snowfall is common in Graz.
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 Graz
Seasonal solar PV output for Latitude: 47.0005, Longitude: 15.3776 (Graz, 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 Graz, Austria
To maximize your solar PV system's energy output in Graz, Austria (Lat/Long 47.0005, 15.3776) 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 Graz, 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 Graz, 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 Graz, 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 Graz, 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 Graz, Austria
The topography around Graz, Austria is mostly hilly and mountainous. The highest elevation in the area is Schöckl Mountain at 1,493 meters (4,898 feet). Areas with south-facing slopes and wide open spaces would be most suited for large-scale solar PV installations. In particular, areas located on higher elevations that have good access to sunlight and minimal shading from nearby trees or buildings would be ideal for large-scale solar PV development.
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: Sunday 23rd of July 2023
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.
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.
