{"acquisitions":[],"changes":[],"country":"FR","description":"Stellaria is a French nuclear startup, spun out of CEA and Schneider Electric, developing a fast-breeder molten salt reactor called Stellarium. It serves future electricity and industrial-heat customers seeking long-duration, low-waste nuclear power. Its reactor runs on uranium, plutonium, or thorium, regenerating its own fuel for over 20 years.","domain":"stellaria.energy","employees":null,"founded":2023,"fundingTotalQuarantined":false,"githubOrg":null,"githubStars":null,"industry":"unknown","industrySources":[],"investors":[],"lat":45.757814,"lng":4.832011,"location":"Lyon, France","multiples":[],"name":"Stellaria","people":[],"revenues":[],"rounds":[{"amountQuarantined":false,"amountUsd":24840000,"connectionsAmong":[],"currency":"EUR","date":"2025-07-01","investments":[],"investors":[],"leadInvestor":null,"leadInvestors":[],"people":[],"slug":"stellaria-energy-2025-07-01-growth","source":{"fact":"round","publisher":"sifted","retrievedAt":"2026-05-08","status":"attributed","url":null},"status":"attributed","type":"seed","url":null}],"slug":"stellaria-energy","sources":[{"fact":"round","publisher":"sifted","retrievedAt":"2026-05-08","status":"attributed","url":null},{"fact":"existence","publisher":"stellaria.energy","retrievedAt":"2026-05-08","status":"self-reported","url":"https://stellaria.energy"},{"fact":"description","publisher":"stellaria.energy","retrievedAt":"2026-05-08","status":"self-reported","url":"https://stellaria.energy"}],"stage":"series-b+","stockCard":{"asOf":"2026-11-09","facts":[],"generatedAt":"2026-11-09","state":"insufficient-evidence","tldr":[]},"techStack":[],"totalRaisedUsd":27000000,"traction":[],"updatedAt":"2026-05-08","valuations":[]}