Solana Generating Station, a 280MW solar concentrating plant, currently, uses molten salt, which allows for six hours of energy storage. https://en.wikipedia.o

Solana Generating Station, a 280MW solar concentrating plant, currently, uses molten salt, which allows for six hours of energy storage. https://en.wikipedia.org/wiki/Thermal_energy_storage#Molten_salt_technology https://en.wikipedia.org/wiki/Thermal_energy_storage#Molten_...