Nuclear fusion is a costly enterprise, no doubt.
Expenses for the NIF total $3.5 billion so far. Other similar projects in the works are expected to eat up
more than $20 billion. But in the past decade, it has also attracted the interest of private investors. After the NIF breakthrough, it will likely draw billions of dollars more in funding from both private and public sectors.
Richard Black, a former BBC correspondent,
cautioned on Twitter that generating power from nuclear fusion, even if technically feasible, “might prove prohibitively expensive.” By the time the technology is ripe for commercial application, he said, “many countries will already have virtually removed fossil fuels from their power system. And there will be no point, 15 years after that, in replacing clean and extremely cheap renewables with clean and probably expensive fusion.”
The possibility that we will have mostly decarbonized our economies by the time nuclear fusion becomes commercially viable is not a given. The solar and wind projects we’re building now must be accompanied by sufficient energy storage, and we are nowhere near the capacity we need to scale up these energy sources. It’s also possible that nations will choose to invest more in nuclear fission, which is used in today’s nuclear power plants, to phase out fossil fuels.