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Engineers at the UK's STEP program have successfully tested a new 'plug-and-socket' magnet technology aimed at advancing fusion energy development by reducing costs and simplifying maintenance. This innovative approach, featuring remountable joints and a bladder-based clamping system, enhances the accessibility of powerful magnets for inspections and repairs, with plans for further testing in fusion reactor conditions. Led by the UK Atomic Energy Authority, STEP aims to deliver grid electricity by the 2040s.