How do you reduce energy consumption though? If you use a price lever then the people that often use the most energy will just continue as they will be able to afford it and the poorer people could end up with bills they can't afford even with their lower use.
European energy consumption is much lower than say the US, Canada and some Arab countries because of energy taxes. People moan in the UK out the high cost of tax on fuel, but we have much, much more efficient cars and raise tax for other uses etc
The US and Canada are obviously bigger countries, so energy consumption would probably be higher in any case.
Having said that, India has a figure of 22 GJ per capita per annum, and China 48. This compared to 328 GJ in the US, around 15 times more than India.
Over 2 billion people in India and China alone (with a combined population over 7 times the US level) are dreaming the American dream and want to bring their consumption up to US levels.
It's not just energy either, it's metals, water, building materials and either stuff.
These issues will define the 21st century!