World's First: Kyocera Modules Pass TUV's Long-Term Sequential Test

Kyocera's solar modules are the first in the world to have been certified in the Long-Term Sequential Test that measures a module's durability and reliability. The new test was carried out by TUV Rheinland, a third-party organization that certifies the safety and quality of a wide range of products.

Modules pass stringent testing

The Long-Term Sequential Test is even more stringent than conventional testing which follows the international standards set by the International Electrotechnical Commission (IEC). This test continuously examines the overall quality and performance of a solar module for roughly one year. In conventional tests, a separate module is used for each sub-test. However, in this new test, a single module is used for all four sub-tests: damp heat, thermal cycling, humidity freeze, and bypass diode. The test measures the output performance of the module at the end of each stage. In this new test, Kyocera's modules earned certification after clearing the standard values in all four sub-tests.

TUV Rheinland Certification

TUV Rheinland Certification

Passed stringent tests

An era of reliability backed by performance and quality

In recent years, the solar energy market has entered an era of intense competition, with strong global demand and a growing number of emerging manufacturers. We are in an era when solar modules are chosen based on their reliability — marked by performance and quality. In the coming years, demand is likely to continue increasing in the solar market. At Kyocera, we are continuosly working to further enhance quality and to supply highly reliable products to the market so that our customers can use them with peace of mind for many years to come.

Our Reliability

High quality and high reliability through our fully integrated manufacturing process

The 1973 global oil crisis highlighted the need for alternative energy sources, and spurred on by this wake up call, Kyocera began research and development into photovoltaic cells in 1975. In 1982, for the first time in the world, we succeeded in mass producing multicrystalline silicon solar cells, which have now become the mainstream type of solar product. By conducting all of the manufacturing processes in-house, from raw materials (silicon casting) to the finished product (module assembly), we are able to enhance our technology and product quality at each stage. The high quality of our solar modules stems from this fully integrated manufacturing process.
High quality and reliability from integrated production system

About TUV Rheinland
TUV Rheinland is a third-party certification organization with a 135-year history (headquartered in Germany). Based on global standards, it evaluates, tests and certifies the safety and quality of a wide range of products such as computers and large industrial machinery.