Simple Solar

Has anyone dealt with these guys before? They came over wanting to put solar panels on my house granite, I’ve been wanting to do that, but I haven’t done my research yet. They are proposal consist of my monthly average electricity payment locked in over 13 years to pay for the solar panel and equipment. also, 25 year warranty and maintenance on the equipment. They gave me a price approximately $60,000 for the solar panels and transformer box.