Fusion startup Avalanche Energy demonstrated its desktop reactor prototype by heating plasma to over 10 million degrees Celsius, a milestone in commercial fusion development.
Avalanche Energy announced the achievement with its compact fusion reactor design, reaching temperatures required for hydrogen fusion reactions. The 10 million degree threshold represents a significant technical checkpoint for the startup's approach to commercial fusion power.
The reactor prototype operates at a scale substantially smaller than traditional fusion experiments, positioning Avalanche within the growing cohort of companies pursuing miniaturized fusion systems. These desktop-scale reactors aim to reduce the complexity and cost associated with larger-scale fusion projects.
Fusion energy requires extreme temperatures to overcome the electromagnetic repulsion between atomic nuclei. At 10 million degrees Celsius, plasma reaches conditions where deuterium and tritium nuclei can fuse, releasing energy in the process.
Avalanche Energy joins other private fusion ventures working toward commercial viability. The sector remains focused on demonstrating sustained, net-positive energy output—where fusion reactions produce more energy than consumed in the process.
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