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US Approves First Microreactor Demo
8 Apr
Summary
- Antares Nuclear received federal approval for its demonstration system.
- The company's Mark-0 microreactor is set to be fueled soon.
- Electricity production from the system is anticipated in 2027.

Antares Nuclear Inc., a California-based startup, has achieved a significant regulatory milestone by winning federal approval to complete its demonstration microreactor system. This authorization is the first of its kind granted under a US program designed to expedite the development of novel fission technologies.
The company has already constructed its Mark-0 microreactor and is preparing for fuel loading in the upcoming months. This places Antares on schedule to fulfill a critical objective for participants in the US Energy Department's reactor pilot program.