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

Fast ignition also takes less powerful lasers, because the reaction rides on the energy contained in the pellet after the first pulse.

ECONOMIST: Nuclear fusion