No such tax can be effectively charged as part of an electricity bill, at least not for areas with enough insolation to have encouraged people to have their own

No such tax can be effectively charged as part of an electricity bill, at least not for areas with enough insolation to have encouraged people to have their own PV arrays for charging. Some sort of tax will be necessary to replace the fuel tax, but I'd be very surprisedby some attempt at a general electricity tax, or for that matter, a charging-station tax (since that won't affect the majority of EVs).