Investors Get Serious About Nuclear Fusion: Green Insight

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The sun’s energy comes from tiny particles smashing into each other, fusing, and releasing heat in the process. Physicists tried to control that same power in labs since the dawn of the nuclear age. It’s called fusion, and it’s been the next big thing in energy for the better part of a century.

Long the domain of government research and international collaborations, private-sector fusion companies in North America and Europe attracted $300 million in investment in 2020, about 20% of their historical total, according to the research group BloombergNEF. This year’s ...