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Deep diveENERGY

FusionCore Modular Fusion Micro-Reactor Prototype Goes Live in France: 18-Month Deployment Cycle

French startup FusionCore completes the world's first modular fusion micro-reactor prototype at Cadarache, generating 50MW with an 18-month construction timeline, opening a new path for distributed fusion energy.

Fusion energy has long been called a technology that's "always 30 years away." But on July 2, 2028, French startup FusionCore announced that its first modular fusion micro-reactor prototype, FusionCore-1, successfully achieved sustained plasma operation at the Cadarache Nuclear Research Center and delivered its first electricity to the grid.

FusionCore-1 has a rated thermal power of 50 MW (approximately 20 MW electrical) and uses a compact tokamak design. Unlike large fusion projects like ITER, FusionCore-1's core equipment fits inside standard shipping containers and can be transported by road to designated sites for installation and commissioning within 18 months.

CEO Dr. Marie Dupont said: "Large fusion projects like ITER cost tens of billions and take decades. Our approach is completely different—using miniaturization and modularization to lower the barrier to fusion energy. A single FusionCore module can power a town of 50,000."

The technical breakthroughs come from two areas. First, high-temperature superconducting magnets using REBCO material that operates at 20 Kelvin rather than the 4 Kelvin required by traditional low-temperature superconductors, dramatically reducing cooling system complexity and cost. Second, a deep reinforcement learning-based plasma control system that maintains plasma stability in real time.

French President Macron attended the launch ceremony and said: "France has always been a pioneer in nuclear technology. FusionCore-1 proves fusion energy is no longer a distant dream but a technology becoming reality."

Critics note that FusionCore-1 can only sustain operation for limited periods (the longest continuous run record is 72 hours), far from the months or years of continuous operation needed for commercialization. FusionCore plans to begin FusionCore-2 construction in 2029, targeting 6 months of continuous operation.

China National Nuclear Corporation stated it is closely monitoring FusionCore's technical approach and has initiated feasibility studies on domestic modular fusion reactors.