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Automatic Storage Device

Solar power production has grown more than 25 times over the last decade in Germany, spurred largely by big incentives for small producers to get into the market. But sunshine and wind power are intermittent, so engineers and others are looking for ways t

How do you catch the sun to make electricity at night? This German inventor has an answer.

Environment

Unhappy with the economics of his rooftop solar panels, a German tinkerer invents his own electricity storage system that saves users hundres of dollars a year, makes it easier to integrate renewables into the grid, and wins an award for renewable product of the year.