San Diego Sun Hours: Understanding Your Solar Investment
Solar Overview
The photovoltaic potential in San Diego is based on 2,931 annual sun hours, concentrated in July. This 32.72° latitude location offers consistent sun angles, making solar installations highly productive across all seasons. These favorable conditions make San Diego a solid choice for solar energy systems, with reliable production and good financial returns.
Geographic Impact
Positioned at 32.7157° latitude and -117.1611° longitude, San Diego's geographic coordinates shape its solar resource profile. This latitude ensures robust solar production year-round, with the sun crossing directly overhead or near-overhead during parts of the year.
Rating Methodology
The "Good" classification reflects San Diego's solar resource quality, considering its 2,931 annual sun hours and 17.6°C average ambient temperature. Temperature conditions are optimal for photovoltaic efficiency, allowing panels to operate near their rated specifications. The good solar resource enables residential system payback periods of 8-12 years, particularly when combined with available incentives.
Understanding the Data
The chart below shows the monthly distribution of sun hours in San Diego. Production remains consistent year-round, with July showing maximum solar irradiation. These monthly variations directly impact solar panel tilt angle selection and overall system design considerations.
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