Calogena develops the CAL30, a 30 MWth pool-type reactor designed for heat production with low pressure (about 6 bars) and low temperature (around 100°C). The design emphasizes a limited number of auxiliary systems, which the company says makes it intrinsically simpler and safer than conventional reactors. Calogena was selected in phase 1 of France’s ‘‘Petits réacteurs nucléaires innovants’’ program and received €5.2M in subsidies; it has since pursued further regulatory interactions including a third request for safety opinions to the ASNR in January 2026. The company is studying a demonstrator on the CEA Cadarache site and is positioning the CAL30 internationally, participating in implantation studies for Kuopio and Helsinki in Finland where the design is in pre-instruction with the STUK regulator. Calogena reports five projects in France and Finland totaling 20 reactors and plans to complete the detailed design and file for creation authorization for its first series by 2028. The recent capital increase—nearly €100M, including €48M from France 2030—aims to fund these development, regulatory and early commercial activities and provides management with more than two years of visibility.

Total raised

$115M

Funding rounds

1

Latest round

Equity

Latest activity

Mar 2026