The Siemens ST20 solar (photovoltaic) module uses Siemens Solar´s industry-leading Copper Indium Diselenide (CIS) thin-film technology to efficiently create electricity from sunlight.

Siemens Solar has established very high quality standards and as a result our main production plants are certified to ISO 9001. Constant checks and inspections guarantee uniform high quality. Every module that leaves the production line is subject to thorough visual inspections as well as mechanical and electrical tests.