Seite - 11 - in Our Car as Power Plant

11 The idea that the fuel cell car is not only used for transpor- tation but also for production of electricity, heat and water, is a paradigm-changing concept. It will certainly change our energy-, water- and transport system dramatically. Let us explore this concept. OUR CAR AS POWER PLANT REASONS TO BELIEVE EFFICIENCY • Fuel cell in the car has an effi ciency of 60% to convert hydrogen into electricity • Hydrogen production from gas or electricity has an effi ciency of about 70-80% BETTER • Car engines at present have an effi ciency of 25-40% • Power system effi ciency is below 40% TIME • Cars are in use for transportation less than 5% of the time • Over 90% of time, cars are parked at home, at work, in a car park, on the street AVAILABLE • Power plants are used between 5% and 90% of the time CAPACITY • Worldwide 1 billion cars on the road; with an average engine capacity of 50 kW this represents a power capacity of 50.000 GW ABUNDANT • 80 million cars were sold in 2011; with an average engine capacity of 100 kW this represents a power capacity of 8.000 GW • Worldwide the electricity production capacity of all power plants is about 5.000 GW