Mark-0
**Vendor/Designer:** [[vendors/antares-nuclear]]
Key Stats
100/100
Mark-0
Status: UNDER_CONSTRUCTION Category: SMR Country: USA USA Vendor/Designer: antares-nuclear Type: Sodium heat pipe microreactor [Sodium heat pipe microreactor](/library/wiki/technologies/Sodium heat pipe microreactor) Capacity: N/A
Overview
Mark-0 is a sodium heat pipe microreactor under construction in the USA by Antares Nuclear, supported by the DOE Reactor Pilot Program with significant funding of approximately $134 million. Its significance lies in advancing SMR technology for civilian energy applications, with a Preliminary Design Safety Assessment approved in January 2026. Specific site details and operational history remain unavailable as construction progresses.
Key Facts
Notes
DOE Reactor Pilot Program · ~$134M raised · PDSA approved Jan 2026 · 500 kWt heat pipe
Source: IAEA PRIS / reactors_canonical · Enriched by Grok Last updated: 2026-05-10
Sources
- NRC Power Reactor List — General information on US reactors under construction or operation.
- World Nuclear Association - USA Profile — Overview of nuclear power development in the USA, including SMR initiatives.
- World Nuclear News — Potential updates on SMR projects and DOE funding programs in the USA.
Sources (1)
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