Solar Cells, E-Books…What’s Next? By Dr Harry Zervos, Technical Analyst, IDTechEx 2008 was definitely the year of the solar cell. Interest in renewables coupled with incentives in countries like Germany and Spain in Europe, which accounted for 73 percent of the overall installations, led to worldwide installations reaching 5.95 GW. This peak reached in 2008 was followed by the worldwide economic slowdown and, more specifically for the PV sector, a cap in the amount of installatio...