Can shading decrease the power output?
Yes – Trees or buildings casting shadows on the Panels (particularly PV) can decrease power outputs. However, when the sun is strongest in summer, the sun is very high in the sky and rarely casts much of a shadow. Therefore, unless the buildings or trees are very close it may not be a problem. Also, for a large part of the year we have diffuse light, not direct sunshine, and the power output is not affected in diffuse light. In winter, the sun is low in the sky, increasing shading but deciduous trees drop their leaves, so most of the light can still get through, and as most of the light is diffuse in winter, no reduction of power.
