Sun Hours and Solar Potential in Ljubljana, Slovenia
Solar Overview
Ljubljana's solar energy potential is characterized by 1,928 sun hours yearly, with the highest irradiation in July. Located at 46.06°, seasonal solar fluctuations are noticeable but manageable, with winter production remaining economically viable. While not exceptional, Ljubljana's solar conditions support viable solar installations with careful system design and realistic expectations.
Geographic Impact
Positioned at 46.0569° latitude and 14.5058° longitude, Ljubljana'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 1,928 sun hours annually and 10.8°C average temperature, Ljubljana 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 Ljubljana typically achieve capacity factors of 12-15%, making systems viable with proper financial analysis.
Understanding the Data
The graph below demonstrates seasonal solar production patterns in Ljubljana. 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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