In the meantime a good start would be to ask people to use less!! Switch off lights(not just in homes but in offices at night) when not in use, unplug transformers for charging mobiles, switch off TV's instead of leaving them on standby etc. It would be consumately easy to save 10% of daily use within a week. But wait, that wouldn't sit well with a society used to conspicious consumption. 
Problem is, although the nut munchers like to bang on about mobile phone chargers and TVs on standby these actually take bu66er all power. Less than a watt in most cases (unless it happens to be Murdoch's Gay set top boxes that stay on all night using 20+watts so they can "phone home"
).
It's what we've come to expect as the basic things in life that take the majority of the power. Heating, hot water, water supply, street lighting, sanitation, fresh and frozen food, having any sort of industrial / commercial activity.
It's a little less easy to do without these. Granted savings could be made in some areas. Many offices are lit and air conditioned throughout the night, PCs left on, etc. Data centres take a lot of power and are, in some cases, half full of idle machines.
A marginal saving won't get away from the fact that our electricity supply network is decaying and needs investment.
We will, literally, have to wait until the lights go out, I suspect. 
Kevin
Heating?? You still using yours? I sleep with clothes on now - can't afford Eon's £350 per quarter anymore!
WOW, did not realise there was electric up north.
