This article originally appeared on ABACUS

Chinese scientists are working on harvesting the energy of the Sun, but it’s not solar energy. The country has developed its very own “artificial sun,” a nuclear fusion research device that is supposed to pave the way for clean energy — similar to the real Sun.

The completion of the reactor was announced on Tuesday, and it’s expected to start operation in 2020, Xinhua News reported.

The actual name of China’s artificial sun isn’t that poetic. It’s called the HL-2M, and it was built by the China National Nuclear Corporation and the Southwestern Institute of Physics. The reactor is located in Leshan, Sichuan province, where it was built to research fusion technology.