pumped hydro

The Victorian government announced on March 14 a $20 million tender, to install up to 80MW of grid-scale energy storage by 2018.

It invited proposals from batteries, pumped hydro, compressed air, flywheel, and solar thermal technologies.

But its deadlines, of 30MW expected to be installed by next summer and 50MW by the following summer, are impossible for two of those technologies to meet.

Pumped hydro facilities take several years to build, because dams, tunnels and pipelines would need to be built.

A new study from the Australian National University suggests that a 100% renewable energy electricity grid for Australia is not only possible, it would be a significantly cheaper option than the current coal and gas-powered network.

The study, by energy experts Andrew Blakers, Bin Lu and Matthew Stocks, proposed a mix of solar PV and wind energy, backed up by pumped hydro as the cheapest option for Australia.

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