List of nuclear fusion companies
Commercial fusion is a term used to refer to privately or publicly held companies which aim to sell electricity produced by nuclear fusion. The industry now consists of over 40 companies that have attracted a combined total of more than $7 billion in investment.
Commercial fusion companies
Companies pursue various different fusion methods for reactors. Some pursue one method, such as magnetic, inertial, or electrostatic confinement. Some pursue hybrid methods such as magneto–inertial or magneto–electrostatic confinement. More methods exist; see below:| Company | Years active | Method | Fuel | Country | Notes |
| Acceleron Fusion | 2008–2022 2023– present | Muon-catalyzed | deuterium–tritium |  United StatesFirst fusion electricity to the gridFor decades researchers have famously said that fusion power is always 30, or even 50, years away. The advent of commercial fusion has changed that, and now fusion power is typically forecast to be around 10 years away, with most companies forecasting that the first fusion plant will deliver electricity to the grid before 2035. Although most of the companies have existed for only a few years, some have already failed to deliver on their forecasts. General Fusion first forecast that it would deliver electricity to the grid by 2009. |