Hybrid Solar System Makes Rooftop Hydrogen by Duke University, Pratt School

A young engineer from the USA’s Duke University developed a rooftop solar power system that converts sunlight into hydrogen and stores it in a fuel cell, providing your home with a virtually endless supply of cheap, clean energy.

The hybrid solar system achieved exergetic efficiencies of 28.5 percent in the summer and 18.5 percent in the winter, compared to 5 to 15 percent for the conventional systems in the summer, and 2.5 to 5 percent in the winter

Source: Duke University