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

Your Hydro Bill in July: $38 Your Hydro Bill in January: $31 Here’s How
Those aren’t typos. They’re the actual hydro bills of a Milton homeowner with a 10 kW solar system — and
