Startorus Fusion/星环聚能科技

Founded: 2021

Located:

Room JT109869, 2nd Floor
Building 39
52 Chengliu Highway,
Jiading District
Shanghai
China

Startorus Fusion or Xinghuan Juneng – more fully Shanghai Startorus Fusion Technology Co. Ltd. or in Chinese 星环聚能科技 – was founded in 2021 in Xi’an, Shaanxi Province by a team of researchers primarily from Tsinghua University. The company specializes in compact spherical tokamak designs using magnetic reconnection heating and aims to demonstrate the engineering and economic feasibility of compact fusion power systems.

Its first experimental device, SUNIST-2, was co-designed and co-built with Tsinghua University and has achieved initial plasma operations and magnetic reconnection heating experiments. The company is currently progressing toward construction of a next-generation validation device, CTRFR-1, often described as a negative triangularity spherical tokamak (负三角球形托卡马克) in Chinese descriptions.

Though Startorus Fusion was originally incorporated in Shaanxi as Shaanxi Startorus Fusion Technology Co. Ltd. or 陕西星环聚能科技有限公司, before its January 2026 Series A financing it changed its registered domicile to Shanghai and adopted the legal name Shanghai Startorus Fusion Technology Co. Ltd. or 上海星环聚能科技有限公司. Concurrently, the company signed an agreement to establish a major R&D and experimental base in Shanghai’s Jiading District though it continues to list an Xi’an address.

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