Seaborg Technologies is a Danish nuclear startup developing the Compact Molten Salt Reactor (CMSR) — a compact, factory-built molten salt reactor targeting floating and land-based deployment at approximately $1 billion per unit for a 100 MWe system. Seaborg has signed cooperation agreements with multiple Southeast Asian nations including Indonesia and Vietnam for potential CMSR deployment. The company raised $45 million in 2024 and is designing for factory mass production — targeting dozens of units per year at commercial scale. The CMSR uses boron-10 enriched molten salt as both fuel and coolant.