Nuclear Fusion Energy’s Long Promised Future Starts to Look Commercially Real

After decades of being dismissed as perpetually 30 years away, fusion energy—power generated through nuclear fusion reactions—is increasingly viewed as a question of when, not if. Investor and public interest in fusion is driven in large part by surging electricity demand from the A.I. boom and the rapid expansion of data centers across the U.S. As Big Tech companies search for reliable, carbon-free baseload power, fusion has reemerged as a long-term solution with growing near-term momentum.

In September...