Ogami Lighthouse is a lighthouse located on Ogami Island off the coast of Nagasaki Prefecture in southern Japan. It was in 1959 that Sharp first succeeded in developing a prototype solar cell. In the years that followed, engineers improved durability and sunlight-to-electricity conversion efficiency and paved the way to commercialization. Solar cells have a long service life and can run without maintenance for long periods of time-qualities that led to the very first solar cell Ogami Lighthouse is a lighthouse located on Ogami Island off the coast of Nagasaki Prefecture in southern Japan. It was in 1959 that Sharp first succeeded in developing a prototype solar cell. In the years that followed, engineers improved durability and sunlight-to-electricity conversion efficiency and paved the way to commercialization. Solar cells have a long service life and can run without maintenance for long periods of time-qualities that led to the very first solar cell installation on an unmanned lighthouse on a remote island with no source of electricity.