Slope Of Roof For Solar Panels

For roofs where pv panels cover up to 33 of the total area in plan view essentially as seen from above the panels must be at least 18 in.

Slope of roof for solar panels.

However the panels can be installed anywhere between 10 to 35 deg with negligible efficiency loss. The angle of your roof actually has less impact on solar panel performance than the direction your solar energy system faces. The energy reduces as we move away from this optimum angle. The size of the path along the ridge depends on how much of the roof is covered in pv panels.

Your solar panel installers can help determine if your roof slope is suitable for solar panel installation. Optimal electricity production occurs when solar panels face south at a tilt equal to 30. However even if you lower the tilt of your roof all the way down to 5 production only decreases by about 10 percent. Individual solar panels can also be adjusted to an optimal angle that maximizes their sun exposure.

So for this roof the optimum angle is 35 a bit over an 8 12 roof slope and at this angle the roof generates 1 265kwh m2 day. The orientation of the panels and the angle they are tilted will have a greater effect on annual energy production. Away from a horizontal ridge on both sides to create the 36 in wide path.