Japan’s Helical Fusion raises $15M in Series A funding

July 14, 2025, 7:01AMNuclear News
Concept art of the central cross-section of the Helix Katana stellarator. (Image: Helical Fusion)

Helical Fusion, a private fusion start-up based in Japan, announced it has closed its first round of venture capital financing, securing ¥2.3 billion ($15.6 million) in funding. According to Helical Fusion, this brings the company’s total capital investment—including grants and loans—to ¥5.2 billion ($35.3 million).