City busses in Future Electric powered?

Is that the Future and how much would it push the Price of Electric Energy?
The 500 buses are currently traveling the Vienna lines with LPG. Because this drive is no longer the current environmental standards, they should be replaced. For testing purposes, at present, foreign manufactured Bus are on the road.

The reason is that as LPG bus engine is out of date: “Although the LPG engine was once a pioneer in environmental protection, he now no longer really corresponds to the applicable emission standard,” said Reich. From 2014, the fleet of the Vienna Transport Authority to be replaced gradually. Already fixed, that is to be in the city with pure motor road from the fall lines 2A and 3A are.

The price of Electricity will be no problem, Fusion power in 10 years for all…