Snowy 2, page-5

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    When did Snowy 2 start?

    Snowy 2.0 Pumped Storage Power Station or Snowy Hydro 2.0 or simply Snowy 2.0 is a pumped-hydro battery megaproject in New South Wales, Australia. The dispatchable generation project expands upon the original Snowy Mountains Scheme (ex post facto Snowy 1.0) connecting two existing dams through a 27-kilometre (17 mi) underground tunnel and a new, underground pumped-hydro power station.[2]Construction began in 2019.[2] It is expected to supply 2.2 gigawatts of capacity and about 350,000 megawatt hours of large-scale storage to the national electricity market.[3][4] It is the largest renewable energy project under construction in Australia.[5] It includes one of the largest and deepest cavern excavations ever undertaken.[6] It also includes the longest tunnels at 27 kilometres in length, of any pumped-hydro station ever built.

    https://en.wikipedia.org/wiki/Snowy_2.0_Pumped_Storage_Power_Station
 
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