Pumped hydro electric energy! What’s that?

The idea is that the grid is operated during peak times by hydro-electric energy where the water is pumped back up during off-peak times.

Pumped hydro is widespread in Europe, especially in the alpine parts of Italy, Germany and France, and in Scandinavian countries like Norway. It is also widely used in Japan and the United States.

‘Australia could be fully electrified within two decades’

http://www.abc.net.au/news/2017-09-21/pumped-hydro-renewable-energy-sites-australia-anu-research/8966530

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