Home batteries
September 2nd, 2009 by rbanks
Ceramatec: Bringing Distributed Power Storage to Your Home
“The Ceramatec battery separates the sulfur and sodium from each other with a thin ceramic membrane which allows electricity to be stored while operating at a much lower temperature. Ceramatec envisions a refrigerator-sized unit that would remain below 98 degrees C (208 degrees F), the melting point of sodium. Keeping the sodium solid makes for a much safer battery. The battery could store 20 kWh worth of energy, either from local, sustainable sources such as wind or solar, or from off-peak recharging from the grid, much like a plug-in hybrid car recharges when the grid demand is low” 
EcoGeek
