this is the thing people never get, .....
The thing people never seem to get is that it is actually very difficult to "Waste" energy in the home.
(Well, In the UK anyway)
Consider.
William is sitting in his den watching TV on his home cinema system. (which consumes an average of 300Watts) The room is lit with a 100watt filament bulb. The room is heated electrically by a thermostatically controlled 1Kw heater with a load factor of 50%.
Concerned that he is "wasting energy" by using an old fashioned filiment bulb, he gets up and swaps it out for an LED one.
Later, his conscience is troubled, while watching Ice Age: The meltdown, that his entertainment might be contributing to the demise of Polar bears. So he switches off his home cinema (Carefully unplugging it so that it doesn't waste energy by going into standby) and reads a book instead.
Now, here's the question.
How much energy has William saved by his actions?
The Answer of course is None!
The other answer is that, in the UK anyway, it is rare for some sort of background heat not to be welcome. even at the height of summer the evenings can still be chilly.
The waste heat from domestic appliances is not too bad a way of contributing towards this.
The opportunities for genuine energy savings are actually extremely limited and are only likely to result if people are willing to realise them by living in colder homes.
This is of course not a new thing. It has been recognised since the seventies that "efficiency improvements" such as double glazing, central heating, cavity wall insulation etc rarely result in lower fuel costs since the improvements are used to enhance standard of living (Living in a warmer house) rather than to reduce consumption (Staying as cold as before but using less fuel)
Measures like this will do little to actually reduce energy consumption in UK homes while at the same time they will introduce another layer of cost and complexity into domestic appliances.
Of course, the situation is likely to be different in other climates (Say Spain or Italy) but here in the UK marginal reductions in the standby consumption of small appliances will make very little difference in practice.