Nanosolar is a heavily financed
Silicon Valleystart-up. The company has raised $150 million and built a 200,000-square-foot factory.
To make solar film, Nanosolar prints CIGS (copper-indium-gallium-selenium) onto a thin polymer. There is no costly silicon involved in the process. Nanosolar is only a few years old, but it has laid plans to take on multinational corporations, such as BP and Sharp, in the solar industry.