Acceleron Fusion, Inc.

Acceleron Fusion is a Cambridge, Massachusetts deep-tech company reviving muon-catalyzed fusion, a phenomenon first observed in the 1950s, as a path to abundant clean energy. Instead of confining a 100-million-degree plasma, Acceleron fires a beam of muons - subatomic particles roughly 200 times heavier than electrons - at highly compressed deuterium-tritium fuel, triggering fusion at temperatures closer to 500-1,000 C. Founded in 2023 by NK Labs veterans Ara Knaian and Seth Newburg and backed by a $24M Series A from Lowercarbon Capital and Collaborative Fund, the company is building two core technologies: a high-efficiency muon source and a high-density fusion cell, with the goal of a fusion power plant that beats natural gas on cost.