divider Q: How does shading affect my PV system?
Proper placement of your Photo Voltaic (PV) system is critical to the success of the PV systems output. Having even one cell in a PV module in the shade, especially during the best sun hours of the day, can decrease the output for the entire module and possibly the entire system. LIPA has stringent requirements relating to how much shade is acceptable. Contact Energy by Choice to arrange a detailed site evaluation. Since the shaded cell is not producing any moving electrons, it acts like an open circuit to the entire string. In earlier photovoltaics, this would reverse the power flow and the module would change from power producer to power consumer. Many modules manufactured today have safety features to avoid this. When looking to place your PV system, please watch for any type of shading. Shading can include trees, chimneys, TV antennas / satellite dishes, dormers of the house, plumbing, vents, etc.
