Our Principal

About Solar Frontier

Solar Frontier K.K is a 100% subsidiary of Showa Shell Sekiyu K.K. It has a mission to create the most economical and ecological solar energy solutions on Earth.

Building on a legacy of work in solar energy since 1970, Solar Frontier manufactures CIS (denoting copper, indium, selenium) solar photovoltaic modules for customers all around the world. Solar Frontier’s gigawatt-scale production facilities in Miyazaki, Japan, integrate economical and ecological advantages into every module: from lower energy requirements in manufacturing to higher overall output (kWh) of CIS in real operating conditions.

Solar Frontier is headquartered in Tokyo, with offices in Europe, U.S.A., and Middle East.

Visit www.solar-frontier.com for more information.

Showa Shell Sekiyu K.K.

Showa Shell Sekiyu K.K. is listed on the Tokyo Stock Exchange and has roots dating back more than 100 years in the downstream energy business.


Solar Frontier, in joint research with the New Energy and Industrial Technology Development Organization (NEDO), has achieved 20.9% conversion efficiency on a 0.5cm2 CIS cell. This is a world record conversion efficiency for thin-film photovoltaic technologies, beating Solar Frontier’s previous world record of 19.7% conversion efficiency for CIS thin-film cells that do not contain cadmium, on top of the previous-best 20.8% cell efficiency record set for all thin-film PV technologies.

The result has been independently verified by the Fraunhofer Institute, Europe’s largest application-oriented research organization.

Conversion efficiency is a popular measurement used to compare the performance of solar modules. Actual performance after installation, however, depends on how differing PV technologies react to their surrounding environment and climate.

Solar Frontier’s CIS modules are proven to generate more electricity (kWh/kWp) in real operating conditions than crystalline silicon modules. Together with high automation and precision manufacturing in Japan, CIS modules provide long-term competitive and reliable returns on investments for customers.