Holtec International
Nuclear equipment, decommissioning and plant-restart company developing the SMR-300 pressurized-water reactor. Its first two units, Pioneer 1 and 2, are planned at the Palisades site in Michigan.
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Facts
Source per value- DesignThe company's lead reactor design name(s) as the company or its regulator names them; semicolon-separated when it markets more than one.
- SMR-300 12
- TypeReactor coolant/technology family. Gas-cooled fast is separated from thermal HTGR designs; sodium-cooled includes both fast and thermal-spectrum designs.
- LWR 1
- Size classDerived from published electric output per module: Micro is 20 MWe or less, Small is above 20 and up to 300 MWe, Medium is above 300 MWe. Legacy heat-only classifications use one third of thermal output as an explicit comparison convention, not a claimed electric rating.
- Medium 1
- MWe / module MWeNet (or gross where only gross is published) electric output of one reactor module as the company or its regulator publishes it. Null for heat-only designs.
- 340 12
- MWt / module MWtThermal output of one reactor module as published by the company or its regulator.
- 1,000 1
- FuelFuel form and enrichment class as published (for example LEU UO2, HALEU TRISO, fuel salt).
- Not published
- Licensing stageFurthest licensing milestone reached with any national regulator: Operating; Construction licensed (construction permit or licence issued); DOE test authorization (a test reactor authorized or built under the US Department of Energy, for example the Reactor Pilot Program or the DOME test bed); Construction under review (construction, site or creation application filed); Design approved (design certification, standard design approval or GDA completed); Design review (formal design review under way, such as UK GDA, CNSC vendor design review or a French safety-options review); Pre-licensing (pre-application engagement only).
- Construction under review 3
- RegulatorsNational regulators the company has formally engaged (NRC, CNSC, ONR, ASN, and others), semicolon-separated.
- NRC 3
- Licensing detailThe milestones behind the licensing stage, by regulator, with dates.
- NRC accepted Part 1 of the phased construction permit application, including a limited work authorization request, on 2026-02-13, and granted an early-site-work exemption dated 2026-08-28. Holtec then filed the PSAR, completing the second phase of the application; NRC expects to finish its reviews by early to mid-2027. 35
- Latest milestoneDate of the milestone that sets the licensing stage (for example the day a construction permit was issued or an application docketed).
- 2026-02-13 3
- First siteLocation of the first-of-a-kind commercial or demonstration unit, with the owner or host.
- Pioneer Units 1 and 2, Palisades Energy Center, Michigan (two proposed units of approximately 340 MWe each) 23
- First powerYear the company or its host utility targets for first operation (criticality or commercial operation, as stated) of the first unit. A plan, not a guarantee.
- Not published
- OwnershipPublic (listed shares), Private (venture or privately held), Subsidiary (a unit or joint venture of a larger company) or State-owned.
- Private 4
- TickerExchange and ticker of the company or its listed parent.
- Not published
- ListedFirst trading day of the company's shares (or its listed parent's current ticker) on the exchange named in Ticker.
- Not published
- FundingHeadline funding: equity raised, public listing, government cost-share awards (DOE ARDP, GAIN, Great British Nuclear and others), with amounts and dates.
- Holtec postponed its proposed IPO on 2026-09-17 and said it would maintain the SEC registration statement. The offering did not price; HNUC was a proposed symbol, not a listed ticker. 4
- Data-center dealTrue when the company has a signed, announced agreement (PPA, framework, MOU, investment or capacity reservation) with a hyperscaler or data-center operator.
- Not published
- Data-center partnersHyperscalers and data-center operators the company has a signed or announced agreement with, semicolon-separated.
- Not published
- Data-center dealsWhat each data-center or hyperscaler agreement covers: partner, type of agreement, capacity and date.
- Not published
- HQCountry of the company's headquarters.
- United States 4
- RegionHeadquarters region.
- North America 4
Sources
- Holtec: current SMR-300 specification (340 MWe net; FAQ still states 320 MWe) accessed 2026-11-11
- NRC 26-008: two proposed units of approximately 340 MWe each accessed 2026-11-11
- NRC: Pioneer phased construction permit review accessed 2026-11-11
- Holtec: IPO postponed on 17 September 2026 accessed 2026-11-11
- WNN: Second part of Palisades SMR construction permit application submitted accessed 2026-11-11
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