ENN Energy

ENN Energy is the fusion arm of a major Chinese natural-gas utility. The EXL-50U device is one of very few large-scale spherical-torus / spheromak devices in operation and the only major Chinese program explicitly targeting aneutronic proton-boron fusion.

A utility (not a startup) can absorb the capex; aneutronic fuel removes the most expensive part of a power plant (the blanket).

Global electricity demand is entering an unprecedented growth phase driven by AI infrastructure, data centers, transport electrification, industrial decarbonization, water desalination, and advanced manufacturing. Solar suffers intermittency, wind capacity-factor variability, natural gas carbon emissions, conventional nuclear cost and deployment speed, and batteries energy-density and duration limits. The world requires a new source of clean, dispatchable baseload energy. Fusion represents the ultimate energy source — the challenge is making it commercially practical.

A spheromak is a self-organising plasma configuration with closed magnetic surfaces but no internal coils — geometrically the simplest closed-field-line confinement.

Spherical-torus p-¹¹B reactor (EXL-50U platform) targeting direct alpha-particle energy conversion with thermal backup for bremsstrahlung recovery.

China's leading private aneutronic program; bets on the spherical-torus geometry to relax magnetic-field requirements for p-¹¹B ignition.

A utility can absorb the capital intensity of fusion R&D far longer than venture funding allows; aneutronic operation simplifies the eventual commercial plant.

Aneutronic fusion power inside a Chinese utility's generation portfolio.

Demonstrate p-¹¹B fusion at meaningful scale with utility backing.

• p-¹¹B ignition temperature
• Spheromak sustainment time

1. 2023

   EXL-50U commissioning