As individuals we can all help reduce energy usage and CO2 emissions by turning off the lights or turning down our heating. Such reductions only represent a small fraction of our total emissions however.
The majority of savings need to be made in industry and from improved control in commercial buildings, which together are estimated to account for more than half of energy consumption currently used worldwide.
All over the world, Governments have already introduced energy saving targets and are putting legislation and regulations in place to ensure they are met.