Nuclear Waste: The Problem Nobody Wants to Talk About (But We Have To)

Nuclear energy is having a weirdly good moment in the US. Tech companies are desperate for power to run their data centers, and suddenly everyone from climate hawks to energy security types is nodding along when someone says “build more reactors.”

That’s great. But here’s the thing nobody wants to talk about: we still have no idea what to do with the waste.

Every year, US reactors produce about 2,000 metric tons of high-level radioactive waste. That’s the really nasty stuff — spent fuel rods that will stay dangerous for tens of thousands of years. And right now, every bit of it is sitting in temporary storage at reactor sites. Pools of water. Steel and concrete casks. These are safe enough for now, experts say, but they were never meant to be permanent.

Seven decades after the first US nuclear plant went online, and we still haven’t figured out where to put the trash.

Everyone’s doing it better than us

The global consensus on long-term storage is a deep geological repository. Dig a hole hundreds of meters underground, put the waste in, seal it with concrete. Basically build a tomb that lasts longer than any human civilization has ever lasted.

Finland is the closest to actually pulling this off. They started planning in the 1980s, picked a site in the early 2000s, and as of 2026 they’re testing their facility. Final approvals should come soon. Operations could start this year. That’s what competent long-term planning looks like.

France isn’t far behind. They already reprocess a lot of their spent fuel — separating out plutonium and uranium to make mixed oxide (MOX) fuel — but that’s not a perfect loop. The leftovers still need a home. They’re planning a repository too, with initial approvals expected later this decade and pilot operations by 2035.

The US technically has a designated site: Yucca Mountain in Nevada. Congress picked it back in 1987. But political opposition killed it. Funding stopped in 2011. Nothing has happened there for over a decade.

Meanwhile, the waste keeps piling up.

The new nuclear boom makes this urgent

China is building reactors faster than anyone. Bangladesh and Turkey are building their first ones. Even in the US, where nuclear has been stagnant for years, there’s suddenly real momentum. Big Tech is throwing money at next-generation reactors — different coolants, different fuels, different designs.

All of which means we’re about to create new types of nuclear waste on top of the old stuff we still haven’t dealt with.

This is higher than I expected. I’ve been following nuclear for years, and the disconnect between the excitement around new reactors and the complete lack of progress on waste storage is genuinely frustrating. It’s like buying a new puppy when you still haven’t house-trained the last one.

What needs to happen

Some experts are calling for a new organization in the US to handle nuclear waste, separate from the Department of Energy. That model has worked in Finland, Canada, and France. It makes sense — the DOE has too many competing priorities, and nuclear waste has been kicked down the road for decades.

The companies building these new reactors, and the tech giants who want to buy their power, should be pushing for this. They have money and political influence. Directing even a small fraction of the recent funding surge toward a permanent waste solution could make a real difference.

The US is the richest country on the planet and still has the most reactors in the world. We should be leading on this, not lagging behind Finland.

The best time to start was forty years ago. The second-best time is now.