REC Silicon ASA, together with its subsidiaries, produces and sells silicon materials for the solar and electronics industries worldwide. It offers various solar grade polysilicon for solar applications, including NextSi used for multi crystalline and monocrystalline solar ingot and wafer production in the manufacturing of solar modules. The company provides electronic grade polysilicon comprising Float Zone based devices that are used in motor control and power conversion processes for hybrid and electric vehicles, wind energy, and high voltage transmission, 5G communications, high-speed trains, Internet of Things, and big data; and Czochralski, an electronic grade polysilicon that principally used in manufacturing of semiconductor wafers.

In addition, it offers silicon gases consisting of silane, dichlorosilane, monochlorosilane, and disilane. The company was formerly known as Renewable Energy Corporation ASA and changed its name to REC Silicon ASA in October 2013. REC Silicon ASA was founded in 1996 and is headquartered in Lysaker, Norway.