The U.K. company AWE and the Rutherford Appleton Laboratory have joined-forces with the National Ignition Facility in the U.S. to help provide energy using Inertial Confinement Fusion, in which a pellet of fuel is heated using powerful lasers.

FORBES: U.K. And U.S. Join Forces on Laser-Fusion Energy

An alternative is Inertial confinement fusion (ICF), in which fusion of nuclei is initiated by heating and compressing a fuel target, typically in the form of a pellet containing deuterium and tritium contained in a device called a hohlraum (hollow space or cavity) using an extremely powerful laser.

FORBES: U.K. And U.S. Join Forces on Laser-Fusion Energy