Kentucky's nuclear waste stockpile gets a second life via laser enrichment

Outside Paducah, Kentucky, thousands of storage cylinders hold what was once considered nuclear waste — leftover material from a shuttered enrichment plant. Global Laser Enrichment (GLE) wants to change that calculation. Using a classified laser enrichment process, the company aims to reprocess this old feedstock back to the same uranium-235 concentration as freshly mined ore. It’s a technological bet that could turn a stranded liability into a domestic fuel supply.

Laser enrichment exploits the distinct vibrational fingerprints of different uranium isotopes. By shining precisely tuned lasers at a gas mixture, the technology selectively excites molecules containing the fissile U-235, making them easier to separate. It’s a stark departure from the centrifuge technology that dominates today’s market, which physically spins material at tremendous speeds. The method isn’t new—MIT’s Charles Forsberg notes research stretches back decades—but early lasers were finicky and unreliable. Modern systems have matured dramatically, making the approach commercially viable for the first time.

The real catalyst, however, isn’t just better hardware. It’s geopolitics. Russia has historically flooded the global market with cheap enriched uranium, starving Western competitors of the business case to build new capacity. The Ukraine war shattered that equilibrium. With the US and UK now banning or limiting Russian uranium imports, a supply gap is opening just as countries from America to China plan new reactor builds. “The gap is just becoming bigger and bigger, and this technology is right in the middle,” says Christo Liebenberg, president of LIS Technologies, a competing startup that recently bought a 200-acre site in Oak Ridge, Tennessee.

GLE isn’t the only player eyeing this space, but its focus on recycling legacy waste gives it a distinct angle. LIS Technologies plans to process natural-grade uranium into 5% enriched fuel, eventually aiming for the 20% concentrations needed by advanced reactors. Both companies are navigating the Nuclear Regulatory Commission’s approval process. Whether laser enrichment can scale and compete on cost against an entrenched centrifuge industry remains an open question, but for the first time in decades, the market door is ajar.