By July 2011, when Solar Frontier KK's new solar panel factory is in full scale production, it will become the world's largest plant for photovoltaic cells. The parent company is Showa Shell Sekiyu KK, a Japanese oil refiner. The $1.25 billion solar-panel factory in Miyazaki prefecture is expected to open in a few months. The annual output will be 900 megawatts of photovoltaic cells. For Showa Shell the move makes sense as oil demand is declining in Japan, given a shift to cleaner burning natural gas for power generation, and adoption of hybrid cars. Showa plans to cut its oil refining capacity by 20% in 2011. And the solar business will account for 50% of the company earnings by 2014. Mr Kameda, head of the Showa Shell solar business, says his company is focussing on the market segment that is growing fast- thin-film CIS cells, made from copper, indium and selenium. These cells cost less to make and to buy, than thicker silicon based crystalline cells. The thin-film have a potential for increasing efficiency and reducing cost because they are relatively new. Showa's technology converts about 13% of sunlight into energy. Showa is also working with partners. It plans to supply panels to GE's solar energy projects, and is working with IBM to develop next-generation solar-cell material that is based on readily available materials....