Solar PV Analysis of Bratislava, Slovakia
Bratislava, Slovakia (latitude: 48.1833, longitude: 17.0379) offers a suitable location for generating solar photovoltaic (PV) power throughout the year. The average daily energy production per kW of installed solar capacity varies by season, with summer yielding the highest output at 6.42 kWh per day and winter producing the lowest at 1.29 kWh per day. In autumn and spring, the average daily outputs are 2.87 kWh and 4.55 kWh per kW of installed solar capacity, respectively.
The variation in energy generation across seasons can be attributed to differences in sunlight availability and daylight hours, with warmer months experiencing more sunlight than colder ones. To optimize energy production from a fixed panel installation in Bratislava, it is recommended to tilt the panels at an angle of 40 degrees facing south.
Local factors such as heavy rain or snowfall may impact solar production by reducing the amount of sunlight reaching the panels and decreasing their efficiency in converting solar energy into electricity. This could result in lower daily output compared to sunny days with clear skies throughout the year.
To mitigate these potential challenges and ensure greater energy production from your solar installation, consider implementing preventative measures such as regular maintenance to keep panels clean from debris or snow accumulation that could obstruct sunlight absorption. Additionally, selecting high-quality PV modules designed for optimal performance under various weather conditions can help maintain consistent energy generation despite environmental fluctuations in Bratislava's climate.
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 64 locations across Slovakia. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Slovakia by location
Solar output per kW of installed solar PV by season in Bratislava
Seasonal solar PV output for Latitude: 48.1833, Longitude: 17.0379 (Bratislava, Slovakia), 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 Bratislava, Slovakia
To maximize your solar PV system's energy output in Bratislava, Slovakia (Lat/Long 48.1833, 17.0379) 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 Bratislava, Slovakia
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 Bratislava, Slovakia. 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 | 51° South in Autumn | 62° 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 Bratislava, Slovakia
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 Bratislava, Slovakia.
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 Bratislava, Slovakia
The topography around Bratislava, Slovakia is mostly flat and low-lying. The nearby areas that would be most suited for large-scale solar PV are the open fields to the north and east of the city, which have plenty of clear sky and unobstructed sunlight. Additionally, there are some small hills to the south of Bratislava which could also be suitable for solar installations due to their elevation. There are also some forested areas in these directions which could provide additional space for solar panels if they were cleared out.
Slovakia solar PV Stats as a country
Slovakia ranks 46th in the world for cumulative solar PV capacity, with 535 total MW's of solar PV installed. This means that 2.40% of Slovakia's total energy as a country comes from solar PV (that's 33rd in the world). Each year Slovakia is generating 98 Watts from solar PV per capita (Slovakia ranks 39th in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Slovakia?
Yes, there are incentives for businesses wanting to install solar energy in Slovakia. The Slovak government offers a range of financial incentives and subsidies for businesses that install solar energy systems. These include grants, tax credits, and other forms of support. Additionally, the Slovak government has set up a Renewable Energy Support Scheme (RES) which provides additional funding for renewable energy projects such as solar installations.
Do you have more up to date information than this on incentives towards solar PV projects in Slovakia? 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: Tuesday 16th of August 2022
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.
