Other possible plans include rewarding firms for maintaining stand-by capacity to supply power to the grid in an emergency, and preventing the construction of new coal stations that do not have some way of capturing and storing their planet-heating emissions.

ECONOMIST: Britain can have clean energy or cheap energy, but not both

There are lots of small initiatives, either at the user end -- e.g. turning off stand-by switches, drinking tap water -- or the supply end -- e.g. wind energy, tidal energy.

CNN: Biofuels: What do the experts think?