Why Everyone Is Suddenly Talking About Nuclear Energy Again
Nuclear power was supposed to be a fading technology. Expensive, politically toxic after Fukushima, outcompeted by renewables. The reversal now underway is genuine and worth understanding.
The driver is AI. Data centers powering large language models and the infrastructure they require consume enormous and rapidly growing amounts of electricity. Unlike residential or commercial demand, these loads are constant — 24 hours a day, 365 days a year. Solar generates during the day. Wind generates when the wind blows. Nuclear generates all the time, regardless of conditions. For a tech industry trying to guarantee power availability at scale, nuclear has become newly attractive precisely because of the attribute that made it economically awkward in a grid context: it does not stop.
Microsoft, Google, and Amazon have all signed agreements with nuclear operators or nuclear startups in the last two years. Microsoft’s deal to restart a unit at Three Mile Island was the most visible, but it is not the outlier — it is the leading edge of a trend.
The technology has also evolved. Small modular reactors, still mostly in the development and permitting phase, promise to reduce the construction cost and timeline problems that have plagued large-scale nuclear projects. Traditional nuclear has been notoriously over budget and behind schedule — the new generation of smaller plants is designed to be factory-built and faster to deploy. Most are still years from commercial operation.
The political environment has shifted too. Nuclear now has genuine bipartisan support in the US for the first time in decades, driven by energy security concerns on the right and decarbonization goals on the left finding an unexpected overlap.
The renaissance is real. The timeline is still measured in years.