Nuclear fusion, the reaction that powers the sun, has long been the energy world's most tantalizing promise: clean, abundant power with none of the long-lived radioactive waste of conventional nuclear plants. Now the money is flowing in to match the ambition.
Fusion startups have raised a combined $7.1 billion to date, according to TechCrunch, which compiled a list of every fusion company that has raised more than $100 million.
TechCrunch notes that the bulk of that funding has gone to a handful of companies, rather than being spread evenly across the field. In other words, investors are concentrating their bets on a small group of front-runners they believe have the best shot at turning decades of laboratory research into a working power source.
The $100 million threshold itself is telling. Building and testing a fusion reactor is enormously capital-intensive, requiring exotic materials, powerful magnets or lasers, and years of experimentation before any electricity reaches the grid. Crossing nine figures in fundraising has effectively become the price of entry for serious contenders.
TechCrunch frames the tally as a snapshot of an industry that has moved from a scientific curiosity into a venture-backed race, with a concentrated pack of well-funded players leading the way.
Why it matters: If even one of these heavily funded startups succeeds, it could reshape how the world generates electricity — and the $7.1 billion already committed signals that private capital, not just government labs, now sees fusion as a bet worth making.