Wow, this B&Q sounds impressive. They seem to be actually trying to make it easy and convenient for individuals to make their lifes more self-sufficient and self-sustaining. I hope comparable stores in Spain follow suit.

B&Q are doing some very impressive things indeed. They previously worked with the Bioregional Development Group (whose directors we interviewed here) on supplying local charcoal to stores across the UK using a decentralised ordering system (details from their website here).

Slighty ironic that these have become best sellers when you look at the location of B&Q stores...mostly out of town retail parks. You should see the traffic at my local store of a weekend. Still, good to see this stuff going mainstream. All we need now are some coherent planning laws.

Unfortunately, wind experts like Paul Gipe and Hugh Piggott are not at all supportive of these rooftop wind turbines.

http://www.wind-works.org/articles/RoofTopMounting.html

Here in Uruguay, wind turbines have been in widespread use for decades. A very common sight in farms far away from the power grid, they are used to charge a car battery which in turn powers the TV at night.
Rarely found today but used some time ago were kerosene-powered refrigerators.