
The Stellarator is a type of nuclear fusion reactor that uses extremely complex magnetic fields to confine plasma and facilitate fusion reactions. This concept, often less known than the tokamak, has been the protagonist of recent advances that consolidate it as a viable alternative for fusion energy. The entire fusion process is based on the same reactions that occur in stars, hence its name: Stellarator, or “star generator.”
The challenge of containing and controlling a fusion reaction for sufficient time is colossal. Achieving efficient plasma confinement to maintain the necessary temperatures and pressures has been the main barrier, but thanks to developments in computing and magnetic field design, Stellarators have become a promising option in the race toward clean and almost infinite energy.