A tiny island off Singapore may hold key to energy's future

Island project to build micro-grids integrating wind, solar and tidal power to provide electricity

On a small island off the southern coast of Singapore, a French energy company is experimenting with what it hopes will be the future of renewable power storage.
 
Engie SA is helping build a small, self-contained power grid on Semakau Island to demonstrate the usefulness of hydrogen gas in converting intermittent power from solar panels and wind turbines into stored fuel that can generate electricity days or even months later, when the need is higher.
 
Plummeting costs for solar and wind are helping renewable energy steal an ever-greater slice of the power generation pie