World Energy Consumption.

http://en.wikipedia.org/wiki/World_energy_consumption

World Energy Consumption refers to the total energy used by all of human civilization.

Typically measured per-year, it involves all energy harnessed from every energy source we use, applied towards humanity's endeavors across every industrial and technologicalsector, across every country. Being the power source metric of civilization, World Energy Consumption has deep implications for humanity's social-economic-political sphere. 

Fossil energy use increased most in 2000-2008. In October 2012 the IEA noted that coal accounted for half the increased energy use of the prior decade, growing faster than all renewable energy sources.^[1] Since Chernobyl disaster in 1986 investments in nuclear power have been small.

According to IEA data from 1990 to 2008, the average energy use per person increased 10% while world population increased 27%. 

In 2008, total worldwide energy consumption was 474 exajoules (132,000 TWh). This is equivalent to an average power use of 15terawatts (2.0×10¹⁰ hp). The annual potential for renewable energy is: solar energy 1,575 EJ (438,000 TWh), wind power 640 EJ (180,000 TWh), geothermal energy 5,000 EJ (1,400,000 TWh), biomass 276 EJ (77,000 TWh), hydropower 50 EJ (14,000 TWh) andocean energy 1 EJ (280 TWh).

Oil remained the largest energy source (33%) despite the fact that its share has been decreasing over time. Coal posted a growing role in the world's energy consumption: in 2009, it accounted for 27% of the total.

 In 2008 the share export of the total energy production by fuel was: oil 50% (1,952/3,941 Mt), gas 25% (800/3,149 bcm), hard coal 14% (793/5,845 Mt) and electricity 1% (269/20,181 TWh).

The amount of energy is measured by satellite to be roughly 1,368 watts (1.835 hp) per square meter,^[13] though it fluctuates by about 6.9% during the year due to the Earth's varying distance from the sun. This value is the total rate of solar energy received by the planet; about half, 89 petawatts (1.19×10¹⁴ hp), reaches the Earth's surface.

n 2008 energy supply by power source was oil 33.5%, coal 26.8%, gas 20.8% (fossil 81%), 'other' (hydro, peat, solar, wind, geothermal power, biofuels etc.) 12.9%, and nuclear 5.8%. Oil was the most popular energy fuel. Oil and coal combined represented over 60% of the world energy supply in 2008.