It's not that people "can't", it boils down to "if they will". To see peoples' indifference to energy conservation in my condo for example, one only has to go to the underground garage. It is full of gas-guzzling SUVs and high performance sportscars. And no, frankly, I don't think a lot of people will stay at home on a Saturday or Sunday night to do laundry.
The best thing to do is simply accept the fact Canadians have a love affair with big energy consumption and build more Nukes. Yes, I know that is a contrarian point of view, but believe me, you cannot run air conditioners, car plants and steel factories with windmills.........