Quick Answer
For optimal energy production, solar panels should face true south between 10 and 20 degrees east or west of the sun's path. In the summer, panels face slightly more south, while in the winter, they face slightly less south. This ensures maximum sun exposure year-round.
Seasonal Orientation Techniques
To determine the ideal orientation for your solar panels, consider the sun’s path throughout the year. In the Northern Hemisphere, the sun is highest in the sky during summer (around June 21) and lowest during winter (around December 21). Since solar panels track the sun’s movement, they should face true south between 10 and 20 degrees east or west of the sun’s path to maximize energy production.
Summer Orientation Tips
During summer, the sun is highest in the sky, so panels should face slightly more south to compensate. A general rule of thumb is to face panels 15 degrees more south than the sun’s path during summer months. This ensures optimal energy production during the peak sun hours of the day.
Winter Orientation Considerations
In the winter, the sun is lower in the sky, so panels should face slightly less south to avoid shading and optimize energy production. A good starting point is to face panels 5-10 degrees less south than the sun’s path during winter months. This allows for efficient energy production during the longer, but less intense, winter days.
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