Liquid metal from MIT stores solar power
The MIT startup Ambri Inc. won a $250,000 grant Wednesday from New York state to develop and test a prototype battery with Con Edison Inc. The company, backed by investors including billionaires Bill Gates and Vinod Khosla, shown above at the TechCrunch Disrupt SF 2013 conference in San Francisco, plans to install its first two prototypes by early ... (more)
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#1 Mar 8, 2014
"If we can get liquid-metal batteries down to $500 a kilowatt-hour, we'll change the world," Donald Sadoway, chief scientific adviser at Cambridge-based Ambri Inc., said in an interview. "
In another thread on Topix there is a group that has found commercially available products to make flow batteries at about $27 per KWh of storage. In the utility electric storage business, one can go large with the storage facilities, so there is no real reason a flow battery couldn't be used and a lot cheaper than $500+ a KWh of storage. Also one can store the reactants in tanks. It is possible to have dual redundancy with spare tanks of reactants waiting to be valved into the system for a fast "recharge".
#2 May 20, 2014
Solar energy can be stored at high temperatures using molten salts. Salts are an effective storage medium because they are low-cost, have a high specific heat capacity and can deliver heat at temperatures compatible with conventional power systems.
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