Saudi Arabia to create world's biggest solar power firm I had to scribble on paper for a few minutes to grasp just how immense this plant is going to be. Not so much for typical Saudis or Americans, but a generic world household can cover their home and car energy needs with about 4kW PV so this plant covers 50 million of that type of household. And in related news, the land of cheap PV PPAs is expecting to pay about $1 a watt for this project that includes a PV factory and battery backup. If I didn't know better, I'd say that they have a little bit of the Elon gene in them. BIG scale stuff.