The World's Largest Solar Plant Started Creating Electricity Today

[solarhydrocan]

22. Molten salt is one answer

Solar Two used molten salt, a combination of 60% sodium nitrate and 40% potassium nitrate, as an energy storage medium instead of oil or water as with Solar One. This helped in energy storage during brief interruptions in sunlight due to clouds.[1] The molten salt also allowed the energy to be stored in large tanks for future use such as night time—Solar Two had sufficient capacity to continue running for up to three hours after the sun had set

"We're proud of Solar Two's success as it marks a significant milestone in the development of large-scale solar energy projects," said then U.S. Energy Secretary Bill Richardson.
"This technology has been successfully demonstrated and is ready for commercialization. From 1994 to 1999, the Solar Two project demonstrated the ability of solar molten salt technology to provide long-term, cost effective thermal energy storage for electricity generation.", Boeing

http://en.wikipedia.org/wiki/Solar_Two

Next: Solar Hydrogen
Solar electrolysis = free hydrogen

Inside the Solar-Hydrogen House: No More Power Bills--Ever

A New Jersey resident generates and stores all the power he needs with solar panels and hydrogen

EAST AMWELL, N.J.—Mike Strizki has not paid an electric, oil or gas bill—nor has he spent a nickel to fill up his Mercury Sable—in nearly two years. Instead, the 51-year-old civil engineer makes all the fuel he needs using a system he built in the capacious garage of his home, which employs photovoltaic (PV) panels to turn sunlight into electricity that is harnessed in turn to extract hydrogen from tap water...



Civil engineer Mike Strizki has lined the roof of his garage with 56 photovoltaic panels to harvest the free and abundant energy of the sun--even in New Jersey.

http://www.scientificamerican.com/article/hydrogen-house/