Dallas Teen Builds Groundbreaking Nuclear Fusion Reactor

12-year-old Aidan McMillan achieves fusion, becoming the youngest person to replicate the sun's energy source.

Mar. 29, 2026 at 11:00am

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A highly structured abstract painting in soft, earthy tones of ochre, terracotta, and forest green, featuring sweeping geometric arcs, concentric circles, and precise spirals, conceptually representing the complex scientific forces behind nuclear fusion.A young inventor's breakthrough in fusion energy technology offers hope for a sustainable future.Carrollton Today

In a remarkable feat of scientific innovation, 12-year-old Aidan McMillan from Dallas, Texas has built a working nuclear fusion reactor, making him the youngest person to achieve this milestone. McMillan's creation, a scaled-down Farnsworth reactor, was able to produce fusion early on his 12th birthday in 2024, pending final verification by Guinness World Records.

Why it matters

McMillan's accomplishment challenges the notion that nuclear fusion research is limited to billion-dollar laboratories. His work at the Dallas Makerspace demonstrates that with passion, determination, and access to the right resources, even young students can make breakthroughs in sustainable energy technology. This achievement could inspire more youth to pursue STEM fields and explore innovative solutions to global energy challenges.

The details

McMillan, who was 8 years old when he decided to build the fusion reactor during the COVID-19 lockdown, was mentored by retired laser engineer Russell Crow as the project progressed over the next couple of years. The teen's reactor uses deuterium gas in a vacuum chamber to create plasma, separating positively charged particles that collide to produce fusion. The entire setup, which includes high-tech equipment and a plastic jug, cost $20,000 and features some secondhand components, proving that fusion experiments are not limited to large-scale, expensive facilities.

  • In 2024, Aidan McMillan achieved nuclear fusion on the cusp of his 12th birthday.
  • McMillan began working on the fusion reactor project when he was 8 years old during the COVID-19 lockdown.

The players

Aidan McMillan

A 12-year-old Dallas resident who built a working nuclear fusion reactor, becoming the youngest person to achieve this scientific milestone.

Russell Crow

A retired laser engineer who mentored Aidan McMillan as he worked on the fusion reactor project over the course of two years.

Dallas Makerspace

A community workshop in Carrollton, Texas where Aidan McMillan constructed his nuclear fusion reactor.

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What they’re saying

“To be honest, it's less about the fact that I did nuclear fusion and more about the fact that I learned a lot of skills.”

— Aidan McMillan

“I gave him guidance here and there whenever he needed it. We were fired up about the success.”

— Russell Crow, Retired Laser Engineer

“The fact that this community exists pushes back on the notion that this is an ivory tower pursuit.”

— Carl Willis, Professor, University of New Mexico

What’s next

Aidan McMillan's fusion reactor will undergo final review by Guinness World Records to officially confirm his status as the youngest person to achieve nuclear fusion.

The takeaway

Aidan McMillan's remarkable accomplishment at just 12 years old demonstrates that with passion, determination, and access to the right resources, even young students can make groundbreaking advancements in sustainable energy technology. His work at the Dallas Makerspace challenges the perception that fusion research is limited to large, expensive laboratories, inspiring more youth to pursue STEM fields and explore innovative solutions to global energy challenges.