Alot of people have already started the effort on getting their houses to be more power efficient (LED bulbs, geyser blankets, aerated shower heads, dishwashers)... I guess it won't be long before the law of diminishing returns kicks in and there's not much more efficient you can get without incurring major cost, which then defeats the exercise for the average person cos it's really all about saving on cost.
Alternative energy has to be the way to go, even for the man on the street, and especially for the working class who can just about afford the high initial cost if they budget for it properly.
I'm gonna start putting some thought and effort into maximising my home's power efficiency and then start looking into solar. From my basic calculations, my bill for 2015 will probably hit R20k.