Friend of mine went to England to study for a year. In the winter it was very cold even in the buildings. He says he saw a radiator and just turned it up. Sat down to read and thought nothing more of it. In a few minutes some buildings maintenance guys come by and jumps his case about it claiming global warming etc... So in a way it is already being done by progressive policy.
The English use global warming as a cover for their incredible cheapness. Anyone who has ever lived in GB knows that they hate turning the heat on in winter. You are just supposed to put on another sweater (or fur coat).