I agree with mkarslan. We should not be rejecting new technology without knowing about it or for the sake of criticism. Sale of Prius PHV is picking up all over the world. The Li-ion battery used in the PHV will be ultimately replacing the Ni-MH battery in the conventional hybrid. The only problem being faced by Toyota is its cheap and cost effective production. Currently it is an expensive but time tested technology and therefore introduced in the higher priced PHVs only.
As regards charging and the intermittent loadshedding, you have a timer option on the vehicle whereby you can set the time for the charging to switch on when you have a 2-hour window available. It takes 1.5 hours to charge on 220 V. By the way, the EV (electrical vehicle) mode is in addition to the hybrid giving you 23 extra km on a full charge and when the EV charge runs out, you can operate the vehicle as a conventional hybrid.
It also comes with a remote AC. When plugged in and about to drive, you can switch on the AC to cool down the interior. The AC runs on the commercial power supply (220 V) and does not consume fuel or the EV charge.