Helion, a nuclear fusion startup company, is expected to supply power to Microsoft by the year 2028.

Helion Energy, a fusion startup company supported by OpenAI's Sam Altman, insists that it is on track to supply electricity to Microsoft by 2028, despite industry skepticism as its ambitious timeline approaches. Chief Financial Officer Pragav Jhan said the company is "still on track" to achieve key milestones, including a power delivery agreement through the grid by 2028, a goal that no fusion company has achieved before. Fusion companies are trying to replicate the reaction that provides energy to the sun by forcing atomic nuclei to combine in superheated plasma.