Q
HOW IS SOLAR PANEL EFFICIENCY CALCULATED?
A
A solar panel efficiency rating gives you a measure of how much sunlight a solar panel can convert into electricity. Efficiency for different manufacturers and types of panels range from about 12% to over 20%. SunPower is recognized as making the highest efficiency solar panels in the industry, producing 44% more power per panel, and 75% more energy per square foot over 25 years.

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