Nvidia-Backed Nuclear Fusion Firm Eyes Power Plant in Japan

Bloomberg.com · last updated September 4, 2025 – 4:36 AM

A US-based nuclear fusion developer wants to deploy a power plant in Japan in the late 2030s or early 2040s, in line with the Asian country’s broader plans to adopt the potent, low-carbon energy source.

Commonwealth Fusion Systems LLC, which last week announced it raised $863 million from investors including Nvidia Corp., has been in dialogue with Japanese government officials on the use of its technology, Chief Executive Officer Bob Mumgaard said in an interview in Tokyo on Wednesday.

here today, more tomorrow

We’ve launched briefing.center with a focus on the press and media.

And we’ve added Citizen Cartwright, a daily quick-read news summary by veteran Washington journalist Linda Cartwright. We’ve also created a new voting rights knowledge center for Citizen Cartwright subscribers. (You can sign up for a dedicated morning email at citizencartwright.com.)

You can sign up here for full access to press and media and Citizen Cartwright on briefing.center.

You can use briefing.center as the center of your information management, or just one of your tools. We’re happy to discuss your information needs.