Work out how much roof space a system needs — or how large a system your available roof can fit.
System Size → Area Needed
Available Area → Max Size
~100 sq ft/kW is typical for standard panels with walking/maintenance spacing — denser or shaded layouts need more.
Choose a mode and tap Calculate.
Area Needed
0 sq ft
This is a planning estimate — the exact layout depends on roof shape, shading, obstructions (water tanks, stairwells), and orientation. A site visit confirms the final layout and achievable system size.
