Questions are being raised over the feasibility of the Queensland government's pumped hydro schemes announced last year.
abc.net.au/news/experts-lash-qld-pumped-hydro-plans-730/102536534The Queensland government surprised many when it announced last year that the state would construct two new pumped hydro schemes, dwarfing the troubled Snowy Hydro 2.0 project in NSW.
The design involves two dams built at differing elevations, connected by a tunnel, with transmission lines then connecting it to the grid. Pumped hydro is also expensive. The cost and delivery time frame for the Snowy Hydro 2.0 scheme bears little resemblance to what was originally announced by Malcolm Turnbull in 2017.
"A basic rule of planning is: build your generation, if you can, as close as you can to the load centre. That reduces what you spend on transmission, and it reduces the risk of long-distance transmission," Professor Bartlett said. "What they're proposing is just a single transmission line, that's a major flaw in the design because that can come down, and every half a kilometre there's a tower, and all the wires are on the one tower. So that can come down and totally blackout a large part of the state," he said."We believe at this point in time anyway, [it] will be a cost that we won't need. We believe we can manage it in other ways," Mr Simshauser said.
"There are other ways of getting storage besides pumped storage, and there's been incredible developments in chemical batteries, the costs have just come down dramatically. "In terms of long-duration storage, really the only long-duration storage project proponents we've seen are pumped hydro," he said."We've worked for a number of years considering all of these options, and pumped hydro energy storage is the proven technology that will enable us to reach our renewable energy targets," he said.
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