E-Vehicles/Tesla/Sun

Jan 2016, p.20: ADAC Motorwelt: The short lines inform that Elon Musk, chief of Tesla builds a huge storage factory for batteries of E-vehicles and in addition for storage of current energy in the own house, i.e. in each single house. He is quoted as follows: “The power of the sun is enough to cover the world’s energy needs.” (My comment: This is true, but better not with Lithium, the “white gold” to start a new Yukon-river-gold-rush-run. Nevertheless Elon Musk teaches us, that we can produce & store our own current energy. We have to ask: Is than energy producing in the future business or not?