Nuclear fusion applications currently under research require immense power, particularly to energize the superconducting magnets used to generate a magnetic field strong enough to confine the ultra-high-temperature plasma within the toroidal chamber (Tokamak). Inside this chamber, the fusion process between tritium and deuterium atoms takes place, producing helium and thermal energy that can be harnessed to generate electricity.

CapTop has supplied the supercapacitor energy storage units designed to power the high-capacity inverters that drive the superconducting magnets for the DTT project carried by the National New Energy Research Institute of Italy (ENEA). These systems operate in cycles involving the impulsive draw of thousands of amperes at voltages exceeding 1,000 V; supercapacitors are essential for this task because no suitable electrochemical batteries exist (or, if they did, their lifespan would be short), yet drawing such power pulses directly from the grid would cause serious strain on the electrical infrastructure. Alternative configurations to the Tokamak—such as the Stellarator—share similar requirements and will undoubtedly rely on supercapacitors as a more compact, durable, and reliable solution.