Sure, costs will come down. Soft costs like permitting and marketing are high in the US compared to Europe and Australia, there's room there. The biggest way

Sure, costs will come down. Soft costs like permitting and marketing are high in the US compared to Europe and Australia, there's room there. The biggest way to cut costs would be to design solar into houses when they are built rather than retrofit them afterwards. In California with the solar mandate for new construction we should see both of those costs go way down. But it will always be more expensive because of efficiency that goes with scale.