240 V/120 V charging capabilities?

I have a 2003 Prius Classic but last week placed an order for a 2009 Prius Touring #6. I've been reading with interest about the Hymotion system for turning this Prius into a PHEV. My understanding from their website, and from PC threads, is that this system only requires a standard 120 V outlet for recharging. While this will be convienent for charging when away from home, I'm curious whether a 240 V charging line can also be added for faster charging when at home.