In 2010 world energy consumption grew by a staggering 5%. Itis estimated that 86% of the energy we use is currently produced by fossilfuels, with oil remaining the largest energy source at 33% and coaltaking a growing role accounting for 27% of production1. The burning of fossilfuels produces around 21.3 billion tonnes of carbon dioxide (CO2) per year, but it is estimated that natural processes can only absorb about half of that amount, so there is a net increase of 10.65 billion tonnes of atmospheric carbon dioxide per year2. The use of renewables in both heat and electricity generation has been steadily on the increase. According to DECC's statistics the volume of renewables used to generate electricity grew at an average rate of 11% per annum between 2003 and 20103.
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