Slope Of Roof For Solar Panels

The angle of your roof actually has less impact on solar panel performance than the direction your solar energy system faces.

Slope of roof for solar panels.

Most australian homes have a roof pitch of 20 to 30 which is considered optimum for maximizing solar power generation. Your solar panel installers can help determine if your roof slope is suitable for solar panel installation. A roof slope that angles between 15 40 degrees should suffice for most solar power systems. Optimal electricity production occurs when solar panels face south at a tilt equal to 30.

Individual solar panels can also be adjusted to an optimal angle that maximizes their sun exposure. The energy reduces as we move away from this optimum angle. Away from a horizontal ridge on both sides to create the 36 in wide path. 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.

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. However even if you lower the tilt of your roof all the way down to 5 production only decreases by about 10 percent. The size of the path along the ridge depends on how much of the roof is covered in pv panels.