Wellington Sun Hours: Understanding Your Solar Investment
Solar Overview
Wellington's solar energy potential is characterized by 2,161 sun hours yearly, with the highest irradiation in January. The -41.29° latitude location ensures relatively steady solar production, with seasonal fluctuations of approximately 25-35%. Solar installations in Wellington are moderately productive, making them viable especially for offsetting high electricity costs.
Geographic Impact
Wellington's location at -41.2865° latitude and 174.7762° longitude plays a crucial role in determining solar production patterns. 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
Solar potential in Wellington is rated "Average" based on detailed evaluation of irradiation levels (2,161 hours), temperature conditions (14.5°C), and seasonal patterns. Cold temperatures improve solar panel performance by 5-10% above standard ratings, though winter snow management should be considered. The workable solar resource in Wellington requires careful system design but can deliver worthwhile energy and cost savings.
Understanding the Data
The chart below shows the monthly distribution of sun hours in Wellington. Solar production shows notable seasonal variation, with summer months providing 42% and winter delivering 16% of annual energy. Such seasonal characteristics are important factors in determining appropriate battery storage capacity and grid integration strategies.
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