home or business owner, considering the empty and non-profitable space of her roof, calls a panel company, which comes out and waves something rather like an iPad-on-a-stick around on top of the house and from this determines what portion of the roof would need to be covered in photovoltaic cells in order to offset actual electricity use. Then they offer a package that spreads the cost of these panels over a set period of time, in the neighborhood of 240 months. This rate per month is designed to zero out a panel owner’s electricity bill, and it is usually about what a customer was paying to
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