Solar Panels - Why So Long to Hit the Shops?

THE SEPTEMBER 2006 ISSUE OF SCIENTIFIC AMERICAN was dedicated to exploring the future of energy beyond the carbon era.The editors shared a sobering outlook: 'Decades may pass before hydrogen-powered trucks and cars relegate gasoline-and diesel-fueled vehicles to antique auto shows.' Until that happens, we?ll 'muddle-through' somehow.But why does it take so long for some energy technologies to get from the lab and industrial applications to the service of consumers?Take solar panels, for example….
Solar Heating