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RoofQualify

Solar decision guide

How can I check solar potential by address?

Use the address to inspect orientation, shading, and usable roof area. Those property-specific constraints matter more than a citywide average and determine whether a theoretical system can actually fit.
South-facing reference
100%

Reference production factor.

East / west factor
82%

Approximate share of south-facing reference.

North-facing factor
60%

Approximate share of south-facing reference.

What the free check looks for

Orientation: the direction and pitch of each roof plane.

Shading: obstructions that interrupt exposure across the day.

Roof area: contiguous usable space after roof shape and obstructions are considered.

Frequently asked questions

What does an address-level roof check inspect?

It inspects roof orientation, shading, and usable roof area—the three physical constraints that a regional average cannot resolve.

How much does orientation matter?

The published factors use south at 100% of the reference, east or west at about 82%, and north at about 60%.

What roof tilt is generally productive?

The practical annual-production range in the published facts is about 30–40 degrees, though the best value varies by location.

Check your specific roof

General guidance is a starting point. Use your address to check orientation, shading, and usable roof area free.