Hydrogen power has still to take off in a big way (Image: Philippe Hays/Rex Features )

WHATEVER happened to the hydrogen economy? At the turn of the century it was the next big thing, promising a future of infinite clean energy and deliverance from climate change. Generate enough hydrogen, so the claim went, and we could use it to transform the entire energy infrastructure – it could supply power for cars, planes and boats, buildings and even portable gadgets, all without the need for dirty fossil fuels. Enthusiasts confidently predicted the breakthrough was just five to 10 years away. But today, despite ever-worsening news on global warming and with peak oil looming, the hydrogen economy seems as distant as ever.

Even in Iceland, whose grand ambitions for a renewable hydrogen economy once earned it the title Bahrain of the north, visible progress has been modest. After years of research, the country now boasts one hydrogen filling station, a handful of hydrogen cars, and one whale-watching boat with a fuel cell for auxiliary power. A trial of three hydrogen-powered buses ended in 2007, when two were scrapped and the third was consigned to a transport museum. More trials are planned, but that was before the meltdown of the country’s banking system. In California, where governor Arnold Schwarzenegger promised a “hydrogen highway” with 200 hydrogen filling stations by 2010, there are just five open to the public. Ten hydrogen-fuelled buses are due to come into service in London by 2010, but a plan for 60 smaller hydrogen vehicles was recently scrapped.

Despite the setbacks, there is still enormous effort going into hydrogen research. …