How much roof space do I need?

About 60 sq feet per kW or 600sq/ft for an average 10kW system. Installing systems smaller than 4kW is probably not worth your hassle. If you’re trying to do the math yourself, then figure each panel as 66″ x 40″. We mainly install in portrait mode, but occasionally in landscape if we’re bolting into purlins (horizontal roof members) rather than trusses

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