The title says 10,000watt which is 20, 500 watt panels, but 1,000 watts would be just 2 panels. I have about 10,500watts of panels on my home and that is 25 panels across 6 roofs. A local installer can do checks for you for free and then give you a quote to source, install and connect up correctly. You need to leave about 300mm around the edge of the roof. While you can get so called DIY kits and systems below 800 watt do not need permission from any Network operators. This is stuff that involves electricity which packs a punch and so better to get a qualified person in or you may end up with the risk of a die (and not DIY) system.