ENN, a private Chinese energy company, has commenced construction on its third-generation fusion device, Helong-2, at a facility in Langfang, Hebei province. The project aims to serve as a critical engineering platform for a future commercial fusion power plant. According to company statements, the primary objective for Helong-2 is to achieve the world's first demonstration of electricity generation using a hydrogen-boron (p-B¹¹) fuel cycle. The stated timeline targets this milestone for 2030. This development represents a significant step in China's diverse public and private fusion energy strategy, which includes both conventional and alternative approaches. Source: Fusion sector
The selection of the p-B¹¹ fuel cycle distinguishes the Helong program from mainstream deuterium-tritium (D-T) projects. As an aneutronic fusion reaction, p-B¹¹ primarily produces charged alpha particles (helium nuclei) instead of high-energy neutrons. This pathway avoids the engineering complexities of neutron-induced material activation and eliminates the need for a tritium breeding blanket. However, the p-B¹¹ reaction requires significantly higher ion temperatures and a much larger Lawson criterion triple product (n·τ·T) for ignition compared to D-T, posing substantial plasma confinement challenges. The Helong-2 platform will need to validate solutions for stable, high-temperature plasma operation to make this approach viable. Source: Fusion sector
The selection of the p-B¹¹ fuel cycle distinguishes the Helong program from mainstream deuterium-tritium (D-T) projects.
Helong-2 builds upon the company's previous experimental device, Helong-1. While specific technical details of the Helong-2 design, such as its confinement concept, have not been fully disclosed, it is described as a key step toward a 'fusion smart power plant.' The project's progression reflects a long-term commitment by ENN, which initiated its fusion research program in 2018. The company's strategy appears to focus on overcoming the engineering hurdles associated with advanced fuel cycles in parallel with global efforts centered on D-T tokamaks and stellarators. This approach, if successful, could offer a different path to commercial fusion energy. Source: Fusion sector
The project's ambitious 2030 target for electricity generation places it on an accelerated timeline relative to many state-funded fusion programs. The development is part of a broader trend of increased private and public investment in fusion within China, which is pursuing multiple confinement concepts and fuel cycles. The progress of Helong-2 will be closely watched as a test of the engineering feasibility and economic scalability of p-B¹¹ fusion. Key technical milestones to monitor will include initial plasma operations, confinement performance metrics, and the development of a direct energy conversion system suitable for an aneutronic reaction. Source: Fusion sector