Tiny Merge
Under Construction
Helion Energy
Overview
Smaller, agile FRC fusion testbed roughly one-eighth the size of Polaris (~8 feet long) used to iterate on plasma formation and ring-merging experiments far faster than the larger machines. Helion sees Tiny Merge as a key learning loop to de-risk Orion ahead of the 2028 Microsoft delivery deadline.
Helion says Tiny Merge is being built at its Everett campus and is targeted to come online by the end of summer 2026 so the team has roughly two years to feed its findings into final Orion designs.