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. Away from a horizontal ridge on both sides to create the 36 in wide path. A roof slope that angles between 15 40 degrees should suffice for most solar power systems. Individual solar panels can also be adjusted to an optimal angle that maximizes their sun exposure. However the panels can be installed anywhere between 10 to 35 deg with negligible efficiency loss.

Your solar panel installers can help determine if your roof slope is suitable for solar panel installation. Most australian homes have a roof pitch of 20 to 30 which is considered optimum for maximizing solar power generation. The orientation of the panels and the angle they are tilted will have a greater effect on annual energy production. At 30 the energy drops to 1 260kwh m2 year a reduction of just 0 4.

Optimal electricity production occurs when solar panels face south at a tilt equal to 30. 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. The energy reduces as we move away from this optimum angle.