OK Guys,please ask yourself the credentials of an article that states a house pfc unit as a voltage optimiser (item 1) any engineer will know that reactive power is not charged for at a domestic level.
Onto V-Phase, this unit was good for a standard running load of 8 amps (VX 1), technology has moved on somewhat since those days, you can now buy Voltage Optimisers that cater for a whole house not just a lighting circuit.
Voltage Optimisers are sold not only for their energy savings but also for their appliance protection, have any of you wondered why your mobile phone chargers get really hot (especially on a night time) is it coincidental that as current draw from the grid drops off on a night time that your voltages rise?
As micro-generation increases, so will the localised grid voltages, as of March 2014 G83-2 inverter upper voltage limits are set at 262 v, what will this do for a house on the same connection point (phase) that has a few PV Systems in the same street?
I have asked a few questions as above that the answers are well known amongst energy companies and engineers and would like your thoughts please for an educated debate.
Maybe this is a product Electricians can promote as a revenue stream for Electrical Safety as well as energy savings! now there's a thought guys.