Japan, U.S. aim to add nuclear power project to $550 billion investment package: sources

Japan and the U.S. plan to include a nuclear power project in a $550 billion investment package to enhance energy security.

Japan and the ‌United States are working to include a nuclear power project ​in the second round of deals under Japan’s $550-billion investment package, two ⁠people with knowledge of the matter told Reuters on Wednesday (March 4, 2026).

The nuclear power project, which the sources say will involve Westinghouse, is designed to strengthen both countries’ energy supply chains ‌as war in West Asia renews concerns about energy security.

Several deals have been under discussion, to be potentially announced when ‌Japanese Prime Minister Sanae Takaichi meets U.S. President Donald Trump in ‌Washington ⁠on March 19, said the sources, who declined to be ⁠identified as the matter was private.

Tokyo is scrambling to build up deals under the investment commitments it made as part of a U.S. tariff agreement. It has already announced three projects ​valued at $36 billion, including a natural ‌gas power plant in Ohio.

A project to construct a copper smelting and refining facility is also being considered, the sources said. Aiming to deepen the talks, Japan’s Trade Minister Ryosei Akazawa plans to visit the ‌U.S. from Thursday (March 5, 2026) to meet U.S. Commerce Secretary Howard Lutnick, two ​separate sources close to the matter said on Wednesday (March 4, 2026).

Westinghouse was one of about 20 companies mentioned in a joint fact sheet ⁠the two governments issued in October as having expressed interest in projects to be financed by Tokyo.