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https://theconversation.com/why-build-nuclear-power-in-place-of-old-coal-when-you-could-have-pumped-hydropower-instead-252017>
"Australia’s energy policy would take a sharp turn if the Coalition wins the
upcoming federal election. A Dutton government would seek to build seven
nuclear power plants at the sites of old coal-fired power stations.
The Coalition says its plan makes smart use of the existing transmission
network and other infrastructure. But solar and wind power would need to be
curtailed to make room in the grid for nuclear energy. This means polluting
coal and gas power stations would remain active for longer, releasing an extra
1 billion to 2 billion tonnes of carbon dioxide.
So is there another option? Yes: pumped hydro storage plants. This technology
is quicker and cheaper to develop than nuclear power, and can store solar and
wind rather than curtail it. It’s better suited to Australia’s electricity grid
and would ultimately lead to fewer emissions. Drawing on our recent global
analysis, we found the technology could be deployed near all but one of the
seven sites the Coalition has earmarked for nuclear power.
The Coalition is likely to spend anywhere from A$116 billion to $600 billion of
taxpayers’ money to deliver up to 14 gigawatts of nuclear energy. Experts say
the plan will not lower power prices and will take too long to build. Our
findings suggest cheap storage of solar and wind, in the form of pumped hydro,
is a better way forward.
This way, we can continue to build renewable energy capacity while stabilising
the grid. More than 45GW of solar and wind is already up and running, with a
further 23GW being supported by the Capacity Investment Scheme until 2027. Only
a handful of the pumped hydro sites we found would be needed to decarbonise the
energy system, reaching the 1,046 gigawatt-hours of storage CSIRO estimates
Australia needs.
Building pumped hydro storage systems near old coal-fired power generators has
some advantages, such as access to transmission lines – although more will be
needed as electricity demand increases. But plenty of other suitable sites
exist, too."
Cheers,
*** Xanni ***
--
mailto:xanni@xanadu.net Andrew Pam
http://xanadu.com.au/ Chief Scientist, Xanadu
https://glasswings.com.au/ Partner, Glass Wings
https://sericyb.com.au/ Manager, Serious Cybernetics