Page - 71 - in Our Car as Power Plant

71 Fuel cell cars can bring us from A to B with a higher energy efficiency. And when parked, the fuel cell in our car can produce electricity more efficiently than the present fossil- fueled large-scale power-plant system. But so far the fuel cell car system still uses gas, a fossil fuel, to convert into hydrogen. Although this is more energy efficient and emits less carbon dioxide than with coal and oil, it is not a sustainable energy system. However, hydrogen can easily be produced from electricity, generated from renewable sources, such as solar, wind, geothermal, hydro or biomass. But it is of course rather stupid when we first produce electricity by a wind turbine, then convert to hydrogen via electrolysis and then use the hydrogen in a fuel cell to produce electricity. So how does the fuel cell car fit in such an energy system? And how can a change towards a fully sustainable energy system take place? THE FUTURE