NABCEP Technical Sales Practice Exam

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What is the optimal tilt angle for solar panels in winter to maximize production?

0 degrees

+15 degrees

To maximize solar energy production in winter, the optimal tilt angle for solar panels is typically adjusted to account for the sun's lower angle in the sky during this season. The sun's path in winter is lower than in the summer, so panels should be tilted to face more directly towards it to capture the maximum amount of sunlight.

The optimal adjustment is generally around +15 degrees from the standard tilt that might be set for summer use, which is usually at latitude. By tilting the panels +15 degrees, it helps increase exposure to sunlight that is at a lower angle during winter months. This positioning enhances the panels' efficiency by allowing them to capture more direct sunlight despite the seasonal changes in the sun's position.

This strategy is particularly important for regions that experience significant seasonal variation in sunlight and energy output, ensuring that solar systems operate at their highest potential throughout the year.

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