SolidUltra, a French power-electronics company founded in June 2026, has secured €3 million in funding to develop modular solid-state transformers for AI data centers. The funding, backed by founding partner Watt & Well, will support engineering, product development, industrialization, and early customer engagement. The company is targeting the conversion of medium-voltage grid electricity into 800-volt direct current for high-density computing facilities. Commercial deployments are targeted for 2028.
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Company Information
Company
SolidUltra
Location
Normandy, France
About
SolidUltra is a French power-electronics company founded in June 2026 and based in Massy, France, developing modular solid-state transformers for AI data centers. The company specializes in converting medium-voltage grid electricity into 800-volt direct current optimized for high-density computing facilities. Their integrated grid-to-800VDC conversion systems use automotive-grade silicon-carbide components in modular 100-kilowatt cells, scalable from hundreds of kilowatts to 10 megawatts and beyond. SolidUltra targets 98.5% conversion efficiency and aims for commercial deployment in 2028.
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