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Renewable energy more efficient than gas, coal, nuclear

Study Finds Renewable Energy Sources are more Efficient than Traditional Ones Oil Price. com By Climate Progress  By. Zoë Casey, 17 July 2012  Wind energy opponents who say that producing electricity using the power of the wind is not efficient would do well to take a look at a new graphic published on the Guardian’s data blog  using UK Government data. ‘Up in smoke: how energy efficient is electricity produced in the UK?’ shows that thermal sources of electricity – gas, coal, nuclear, waste/biomass, oil and other – lose massive amounts of energy as waste heat, compared to almost 0% for renewables.

Gas accounts for 48% of the UK’s electricity supply and, of the 372 Terra-Watt hours of electricity it produces per year, 54% of this is lost as heat. Coal, meanwhile, accounts for 28% producing 297 TWh, loses an even higher proportion – 66%. Nuclear – accounting for 16% of the energy supply with 162 TWh, loses 65% and oil – 3% of the supply with 51 TWh – loses 77%.

Contrast these figures with renewable energy – which all together account for 4% of the UK’s electricity supply producing 14 TWh – they lose less than one percent. So, under this measure, renewable energy is 100% efficient.

Wind energy opponents centre their arguments on the ‘capacity factor’ of a wind farm. The capacity factor of any power plant is a measure of the amount of energy it actually generates compared to its theoretical maximum output in a given time. No power plant operates at 100% of its capacity…..  http://oilprice.com/Alternative-Energy/Renewable-Energy/Study-Finds-Renewable-Energy-Sources-are-more-Efficient-than-Traditional-Ones.html

July 18, 2012 - Posted by Christina Macpherson | 2 WORLD, renewable