UK invested, over the last decades, in mostly off-shore wind farms that have enabled the UK electricity CO2 emissions to fall to circa 300gm/kWh at current consumption rates. Clearly substantially more electricity consumption (such as 32 million all-electric vehicles) will require more gas to be burnt at the UK power stations. Gas alone emits 600gm/kWh, Coal 1,100 gm/kWh. Optimising the balance of power station versus tail pipe emission is difficult. Personal life-style change is actually quicker and more effective than trying to force the greening of the economy.