Solar Panels South Facing Roof

You can add an extra panel if you have the room to make up the difference.

Solar panels south facing roof.

However solar panels can be orientated on any roof that faces south of either east or west. The direction solar panels should face is true south a k a. The results backed us up on this theory showing poor solar radiation levels for south facing roofs at this steep tilt. The flatter a south facing roof is i e.

If the panels face west instead they get more energy during the afternoon an evening. If your panels face due east or west you will loose about 9 over what the south facing panels would provide. On a south facing roof the panels produce energy when the sun is high in the sky but as the evening sets in that production decreases. True south can also be calculated at noon when shadows from vertical objects run north south.

Why orientation matters with rooftop solar. For the northern hemisphere south facing roofs will give you the best results from solar panels. We also took at look at a tilt angle of 40 for the south facing orientations mainly just to show that a south facing roof with a steep pitch is probably not a good place for solar panels. Solar panels should face south for any home in america to obtain maximum power generation.

In general solar panels that are oriented directly east or directly west will produce about 20 percent less electricity than if they were facing south. Solar south or geographic south. The closer to horizontal the better it will be for solar. Panels mounted on a standard pitch roof facing east or west will produce approximately 15 less output than panels mounted on a south facing roof of a standard pitch.

A littlle east or west causes no problems.