As long as there are fossil fuels being used for the production of electricity, either non-clean energy or a mix will be cheaper as a purchaser (regardless of p

As long as there are fossil fuels being used for the production of electricity, either non-clean energy or a mix will be cheaper as a purchaser (regardless of production costs). All the electricity gets mixed together in the power network anyway, so if you buy 'renewable' electricity you are effectively just paying a premium to say yours came from the pool of renewable electricity. If you increase the power load on the network though, and in-aggregate the power requirement increases, chances are that increase still comes from fossil fuels. I think we will be waiting a long time until global electricity is 100% renewable, although I hope it happens quick and it's good that you are more optimistic than me :)