Before investing in solar, it's crucial to determine the average peak sun hours for your specific location. This key metric directly impacts your system's energy production and financial returns.
What are Peak Sun Hours? It's a standardized measure of solar irradiance intensity, representing hours of sunlight equivalent to 1,000 watts per square meter.
Why Location Matters: Peak sun hours can vary dramatically from city to city and even neighborhood to neighborhood, significantly affecting system performance.
Plan with Precision: Accurate local data is essential for correctly sizing and optimizing your solar installation.
Use our Peak Sun Hours Table to access localized data for your address and take the first step toward a well-informed solar decision.
What Are Peak Sun Hours?
A Peak Sun Hour is a standardized unit for measuring the intensity of sunlight available for solar power generation. It is defined as one hour during which the sunlight provides an average of 1,000 watts of energy per square meter (about 10.5 square feet).
Key Distinction: It's crucial to differentiate this from general "daylight hours." For example, while your location might enjoy 7 hours of daylight, the effective peak sun hours for energy production might only be around 4 to 5. This is because sunlight intensity is greatest around solar noon and diminishes in the early morning and late afternoon.
Geographical & Seasonal Influence: The number of peak sun hours you receive daily is influenced by your proximity to the equator (with more hours typically closer to it) and the season (with summer months generally offering more peak hours).
To generate the highest possible energy, solar panels require direct sunlight. For optimal results, panels should be oriented south and installed in an area completely free from shading by trees, buildings, or other obstructions.
The Critical Impact of Shade: Even a small amount of shade on a single panel can significantly reduce the power output of the entire system. This is because the cells within a panel are connected in series. If one cell is shaded, it can weaken the performance of all connected cells.
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