With Californian carpet-bagger, Elon Musk swooping on South Australia to scoop up as much as he can of the $550 million its hapless Labor government is about to squander on non-fixes for its self-inflicted wind power disaster, it’s time to put pen to paper to work out just how risible is SA’s plan to rely on giant batteries.
So for the lead acid batteries adopting a value of 40 Wh/kg for 300 GWh of storage requires 7,500,000 tonnes of lead acid batteries. For higher energy density lithium-ion batteries have an energy density of 140 Wh/kg so only 2,100,000 tonnes would be needed.
So the battery storage is some $60 to $90 billion to store the surplus energy from 4,000 MW of new wind farms with substantial running costs due to battery lifetime and erratic discharges.
Of course South Australia could close all the gas fueled power stations and build massive interconnectors to the other states and then blame them for CO2 emissions. Perhaps that is why the South Australian government talks of nationalizing the power stations/
Friends off the grid have a car shed to store their batteries … for two people. Plus a shed for the generator. Sth Australia will need one bloody big shed!