This Google World Map looks at the percentage of each country's energy that comes from fossil fuels. Generally more developed economies rely more on fossil fuels then less developed countries.

Data Source: World Bank, World Development Index. Chart 3.6 Energy Production and Use. http://wdi.worldbank.org/table/3.6

Energy data are compiled by the International Energy Agency (IEA). IEA data for economies that are not members of the Organisation for Economic Co-operation and Development (OECD) are based on national energy data adjusted to conform to annual questionnaires completed by OECD member governments. Data for combustible renewables and waste are often based on small surveys or other incomplete information and thus give only a broad impression of developments and are not strictly comparable across countries. The IEA reports include country notes that explain some of these differences. All forms of energy - primary energy and primary electricity - are converted into oil equivalents. A notional thermal efficiency of 33 percent is assumed for converting nuclear electricity into oil equivalents and 100 percent efficiency for converting hydroelectric power.