TOKYO (Reuters) -About 20 companies from Japan and the U.S. have expressed interest in projects that are part of Tokyo's planned $550-billion investment package, a factsheet issued by the two countries showed on Tuesday.

The companies include SoftBank Group, Westinghouse, GE Vernova ( GEV ) and Hitachi ( HTHIF ), according to a list of projects that are worth up to around $400 billion.

Japan has said its $550 billion investment package, agreed upon under its tariff deal with Washington in September, would include equity, loans and loan guarantees from state-owned agencies.

Westinghouse is looking at building pressurized water reactors and small modular reactors in projects worth up to $100 billion, involving Japanese suppliers like Mitsubishi Heavy Industries ( MHVYF ), Toshiba and IHI.

A consortium that includes GE Vernova ( GEV ) and Hitachi ( HTHIF ) is also considering building small modular reactors.

SoftBank is interested in a $25 billion project to develop large-scale power infrastructure.

Carrier could supply thermal cooling systems for power infrastructure and Panasonic ( PCRFF ) could build energy storage systems.