<Li> Length of 275 kV grid: 9,800 km (circuit) </Li> <Li> Length of 132 kV (or lower) grid; 5,250 km (circuit) </Li> <P> Total generating capacity is supplied roughly equally by renewable, nuclear, coal fired and gas fired power stations . Annual energy used in the UK is around 360 TWh (1.3 EJ), with an average load factor of 72% (i.e. 3.6 × 10 / (8,760 × 57 × 10). </P> <P> Figures are again from the 2005 SYS . </P>

Where does the national grid get its energy from
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