I was looking a while back at an article about solar panels if I remeber right there was a 150 watt panel that ran about $700 so in order to even run 1 1000 watt light you would need 6.67 of these panels now the part I am not sure of is do they put that out all the time or through out the course of the day either way it is ridiculous cost for startup and you would have to have your whole house and yard for a decent grow the panels were about 3' x 4' for that out put.