What Factors Influence Solar Panel Placement Throughout The Year?

Seasonal Considerations

The tilt and azimuth of solar panels must be adjusted to optimize energy production during different seasons. In the summer, panels should be tilted between 30° to 40° to maximize energy production, while in the winter, the tilt should be around 20° to 25° to avoid shading from snow or ice. For example, a 4 kW solar panel array in the northern hemisphere should be tilted at 35° in the summer to produce 30% more energy.

Impact of Sun Angle on Energy Production

The sun’s angle changes significantly throughout the year, affecting the amount of energy produced by solar panels. In the winter solstice, the sun’s angle is about 23.5° lower than in the summer solstice, resulting in a 20% reduction in energy production. By adjusting the tilt and azimuth of the panels, you can recover some of this lost energy. For instance, if your solar array is producing 4,000 kWh of energy in the summer, it may produce only 3,200 kWh in the winter.

Best Practices for Seasonal Adjustments

To ensure optimal energy production throughout the year, it’s essential to regularly inspect and adjust the solar panel array. This involves checking the tilt and azimuth angles, cleaning the panels, and ensuring the array remains free from shading. Ideally, solar panels should be adjusted twice a year: once in the spring (around March or April) and once in the fall (around September or October). This will help maximize energy production and extend the life of the solar panel array.