What ought to be required reading for all wattwatters:
http://www.withouthotair.com/ "Sustainable energy without the not air" by David Mackay.
Finally a book which blows the myths on sustainable energy, the nonsense of the "every bit helps" and the meaningless numbers that drown most literature on this subject.
My mobile phone instructs me to unplug the charger every time I disconnect the phone, because some sawdust-brained regulator so decided. You'll read here what a useless exercise that is.
The book is available free of charge and can be viewed online or downloaded.
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