The company -- which got early stage financing from Google Inc. co-founders Sergey Brin and Larry Page and is based in Palo Alto, California -- also plans to build a solar panel fabrication plant in Berlin, Germany.

The company said it arranged a US$100 million financing package for the projects, including US$75 million of preferred stock.

Nanosolar and other private solar companies such as Miasole and Heliovolt use a thin-film technology that requires only a fraction of the amount of silicon needed in conventional solar cells.

Solar power and other renewable energies such as wind, biomass, and geothermal comprise the fastest-growing energy sector. Global sales of green sources of energy more than doubled in 2005 to US$39.9 billion, according to California research and publishing firm Clean Edge.

Sales could grow to US$167.2 billion by 2015, according to Clean Edge.

California is pushing a US$2.9 billion program to make the state one of the world's largest producers of solar power.

The "California Solar Initiative" aims to add 3,000 megawatts of solar energy over 11 years through the installation of 1 million solar energy systems at homes, businesses, farms, schools and public buildings.