Last week, Everett, Wash., fusion start-up Helion Energy announced that it has received its radioactive materials license and radioactive air emissions license from the state of Washington.

According to the company, these milestones make it “the first company in the world to secure the regulatory licenses needed for a fusion power plant” and represent confirmation that it has the needed facilities, trained personnel, and safety programs in place to safely operate its fusion machine.

On June 9, Tennessee became the first U.S. state to implement its own regulatory framework for nuclear fusion machines. It’s a notable step in the rapidly developing field of fusion regulation, and will help Tennessee prepare to regulate Type One Energy’s proposed commercial fusion power plant near Oak Ridge.