• As of 2012, hydroelectric power stations in the UK accounted for 1.65GW of installed electrical generating capacity. This is 1.8% of the UK's total generating capacity and 18% of the UK's renewable energy generating capacity.
  • A modern hydro turbine generator can convert over 90% of the energy in the available water into electricity, making it the most efficient form of electricity generation.
  • Hydroelectricity currently produces around 17% of the world's electricity and 90% of the world's renewable power.
  • However, less than one third of the world's practical hydro capacity has been developed.
  • The UK's largest hydroelectric power station is at Dinorwig, capable of generating 1.8GW of power in 12 seconds. This is dwarfed however by the largest in the world, Three Gorges Dam located in China. This has a generating capacity of 20.3GW, servicing around 3% of demand in China.
  • Recent studies estimate there is a remaining viable hydro potential of 850 to 1550 megawatts in the UK. This represents approximately 1 to 2% of current UK generating capacity.
  • Gilbert Gilkes & Gordon Ltd of Kendal, England, has manufactured hydro turbines for longer than any other company in the world.
  • Hydroelectric power generators in the UK are eligible for Renewable Obligation Certificates (ROCs) with stations commissioned after 2002 that have 20MW of power output. In addition, schemes up to 50kW can only apply for FITs, whereas schemes between 50kW and 5MW can choose between FITs or ROCs.
  • Twenty-five countries in the world depend on hydropower for 90% of their electricity.
  • Hydroelectric power plants have long operating lives (estimated upwards of a 100 years). The Hoover Dam is still running strong in the US with over 80 years in operation.
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