Bratislava Solar Data: Annual Sun Hours & Production Potential
Solar Overview
Bratislava, situated in Slovakia, offers 1,941 sun hours yearly, with maximum solar production in August. This mid-latitude position (48.15°) creates moderate seasonality, with winter sun angles approximately 47° lower than summer peaks. The moderate solar resource in Bratislava requires optimization of system design to maximize energy production and economic returns.
Geographic Impact
Positioned at 48.1486° latitude and 17.1077° longitude, Bratislava's geographic coordinates shape its solar resource profile. This latitude results in notable sun angle variations between seasons, with winter sun angles being 40-47° lower than summer peaks, affecting optimal panel positioning.
Rating Methodology
With 1,941 sun hours annually and 12.3°C average temperature, Bratislava achieves a "Average" solar potential rating. Cold temperatures improve solar panel performance by 5-10% above standard ratings, though winter snow management should be considered. Solar installations in Bratislava typically achieve capacity factors of 12-15%, making systems viable with proper financial analysis.
Understanding the Data
The chart provides a visual breakdown of solar irradiation by month for Bratislava. The distribution indicates moderate seasonality, with 42% of sun hours in summer compared to 16% during winter months. Such seasonal characteristics are important factors in determining appropriate battery storage capacity and grid integration strategies.
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