The JET site, despite its records, has faced numerous challenges and delays, including years of experiment suspensions in the mid-2000s while undergoing internal structural replacements. Generating sufficient energy for homes is still a distant goal, as the energy produced is only enough to boil about 60 kettles' worth of water.

After the experiments conclude, researchers will analyze how the reactor materials have changed to enhance maintenance at other fusion sites, such as the Iter reactor in southern France. Despite the UK's decision not to participate in the EU's Euratom program, the UK government has committed £650 million to a domestic fusion program, including the construction of a prototype fusion energy plant called STEP in Nottinghamshire, with operations planned for the early 2040s.

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