Nuclear startups see increased backing from Big Tech

Artificial intelligence is driving a massive surge in electricity demand across the US, prompting Big Tech firms to secure reliable power for their data centers, and many are turning to nuclear reactors.

Tech companies are particularly interested in nuclear fission—a stable, 24/7 energy source—to meet their growing needs. Unlike old mega-reactors, today’s innovation lies in small modular reactors (SMRs), which promise safer, cost-efficient, and flexible energy through mass production.

However, there are no SMRs in the US at the moment. Companies like Google, Amazon, Meta, and Microsoft have already invested in or partnered with nuclear startups over the past two years.

Kairos Power, backed by Google, plans to supply 500 megawatts by 2035. OpenAI-linked Oklo eyes long-term deals despite early regulatory setbacks. 

Saltfoss, TerraPower (founded by Bill Gates), and X-Energy are also developing SMRs with unique designs and storage solutions.

Big Tech’s bets suggest a nuclear comeback is well underway—this time fueled by data, not defense.