San Juan Solar Data: Annual Sun Hours & Production Potential
Solar Overview
San Juan's solar energy potential is characterized by 2,484 sun hours yearly, with the highest irradiation in July. At 18.47°, solar panels receive consistent irradiation throughout the year, with production variation typically under 10%. These good solar conditions make San Juan a practical location for renewable energy installations with dependable output.
Geographic Impact
San Juan's location at 18.4655° latitude and -66.1057° longitude plays a crucial role in determining solar production patterns. At 18.47°, solar panels receive remarkably consistent irradiation throughout the year, with monthly variation typically under 10%.
Rating Methodology
San Juan receives a "Good" rating for solar potential, derived from comprehensive analysis of 2,484 annual sun hours, 26.6°C average temperature, and geographic factors. The elevated temperatures reduce theoretical peak efficiency but are balanced by excellent sun exposure throughout the year. Solar installations in San Juan typically achieve capacity factors of 15-18%, supporting strong financial returns.
Understanding the Data
The chart provides a visual breakdown of solar irradiation by month for San Juan. The data shows well-distributed solar production across months, with July showing peak irradiation. This seasonal pattern is typical for locations at this latitude and influences the sizing and economics of solar installations.
💡 Advice: Consider panels with good temperature coefficients to minimize efficiency losses during summer heat.
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