ENN Science and Technology Development Co., Ltd. (ENN) is committed to generating fusion energy in an environmentally friendly and cost-effective manner. Proton-boron (p-11B) fusion is considered an ideal choice due to its abundant fuel availability and aneutronic nature. Recent studies suggest that p-11B fusion is feasible with new cross-section data, provided that hot ion mode and high wall reflection can be achieved to reduce electron radiation loss. The spherical torus (ST) configuration, with its high beta and good confinement, is an ideal candidate for p-11B fusion. ENN has developed a new system code based on the updated spherical torus energy confinement scaling law, which predicts that a reactor with specific parameters can achieve p-11B fusion with a gain factor \( Q > 10 \). ENN's roadmap for p-11B fusion includes several key milestones: 1. **EXL-50**: A central solenoid-free ST device that began operations in 2018 and was upgraded to EXL-50U in 2023. 2. **EHL-2**: The next-generation device, named EHL-2, which aims to verify the thermal reaction rate of ST p-B fusion and establish experimental scaling laws. It is expected to be completed by 2026. 3. **EHL-3**: A new ST with plasma parameters closer to those required for p-11B fusion, to be built in two phases (EHL-3A and EHL-3B). The roadmap is divided into three phases: 1. **Phase I**: Establishing the scientific and technological basis, focusing on evaluating key aspects such as hot ion mode experiments and validating ST confinement scaling laws at high plasma parameters. 2. **Phase II**: Improving plasma parameters and overcoming engineering challenges, building EHL-3 to scale up the fusion reactor. 3. **Phase III**: Preparing for commercial fusion, focusing on cost reduction strategies and making p-11B fusion economically viable. ENN's approach emphasizes the development of advanced technologies, including high-temperature superconductivity, high-power supply, and efficient ion heating methods. The company is also exploring the potential of artificial intelligence to accelerate progress in fusion energy research.ENN Science and Technology Development Co., Ltd. (ENN) is committed to generating fusion energy in an environmentally friendly and cost-effective manner. Proton-boron (p-11B) fusion is considered an ideal choice due to its abundant fuel availability and aneutronic nature. Recent studies suggest that p-11B fusion is feasible with new cross-section data, provided that hot ion mode and high wall reflection can be achieved to reduce electron radiation loss. The spherical torus (ST) configuration, with its high beta and good confinement, is an ideal candidate for p-11B fusion. ENN has developed a new system code based on the updated spherical torus energy confinement scaling law, which predicts that a reactor with specific parameters can achieve p-11B fusion with a gain factor \( Q > 10 \). ENN's roadmap for p-11B fusion includes several key milestones: 1. **EXL-50**: A central solenoid-free ST device that began operations in 2018 and was upgraded to EXL-50U in 2023. 2. **EHL-2**: The next-generation device, named EHL-2, which aims to verify the thermal reaction rate of ST p-B fusion and establish experimental scaling laws. It is expected to be completed by 2026. 3. **EHL-3**: A new ST with plasma parameters closer to those required for p-11B fusion, to be built in two phases (EHL-3A and EHL-3B). The roadmap is divided into three phases: 1. **Phase I**: Establishing the scientific and technological basis, focusing on evaluating key aspects such as hot ion mode experiments and validating ST confinement scaling laws at high plasma parameters. 2. **Phase II**: Improving plasma parameters and overcoming engineering challenges, building EHL-3 to scale up the fusion reactor. 3. **Phase III**: Preparing for commercial fusion, focusing on cost reduction strategies and making p-11B fusion economically viable. ENN's approach emphasizes the development of advanced technologies, including high-temperature superconductivity, high-power supply, and efficient ion heating methods. The company is also exploring the potential of artificial intelligence to accelerate progress in fusion energy research.