Electricity storage 'too expensive'?

MIT is now developing flow batteries for electric cars which could be charged at home

Flow batteries have been used to store electricity on small island communities with wind mills using small pumped batteries with large electrolyte tanks. MIT is now developing flow batteries for electric cars which could be charged at home or have their electrolyte tanks drained and filled up with charged electrolyte at charging stations. They estimate that this system would cost half as much as existing car batteries and could be scaled up for the electric grid.

See: web.mit.edu/newsoffice/2011/flow-batteries-0606.html.

Alan Stewart, Devon

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