This chart indicates the breakdown of contributions of the fossil fuels, “traditional” renewables such as firewood, and “new” renewables such as solar power, to the total global energy supply in the 1995. The domination of fossil fuels over the large nuclear reserves, and undeveloped new renewables, is immediately apparent.
Reasons: Population growth e.g. population boom after WWII, better health care in developing countries Economic growth e.g. increased use of cars, higher industrial production Lifestyle changes e.g. more consumer electronics used