More than 100 years ago, the development of the power system began at the beginning of the second industrial revolution. At that time, the commercial genius Edison, who focused on the DC grid, and the inventor Tesla, who preferred the AC grid, competed with each other, and Tesla's AC grid ultimately prevailed. The main reason was that under the conditions at that time, there were not too many electronic products, and in addition, the DC grid could not supply power for too great a distance, and many substations had to be built. Therefore, the AC grid won and that power grid was developed to this day.

Nowadays, with the rapid advancement of science and technology, all kinds of electronic products are inseparable from our daily life. In addition, countries around the world have begun to pay attention to energy conservation and carbon reduction issues. Therefore, the development of renewable energy is the future trend, and Effective integration of green energy generation and energy storage will be a major issue in the future. MEAN WELL will take this as a starting point to define a new DC centralized bus solution, leading to MEAN WELL becoming a pioneer in DC bus power applications, as well as lighting applications designed to reduce both power conversion losses and construction costs. Therefore, the DC centralized bus power (DC Grid), will no longer be just a concept, but a necessary part of energy infrastructure and an issue that cannot be ignored in the future.