Store Solar Power with Molten Salt
A number of methods and technologies are being considered for storing the solar power created during the sunny part of the day and making it available for use at night or during cloudy days. Molten salt is one method. Per the Wall Street Journal, Molten salt loses only about 1% of its heat during a day, making it possible to store energy for long periods of time. ...
... "It is a power tower, a little bit like a water tank on stilts surrounded by hundreds of mirrors that tilt on two axes, one to follow the sun across the sky in the course of the day and the other in the course of the year. In the tower and in a tank below are tens of thousands of gallons of molten salt that can be heated to very high temperatures and not reach high pressure. " ...Via New York Times: Store Solar Energy