Estonian energy tech company Skeleton Technologies has raised 108 million euros (around $114 million) from multinational Siemens and Japanese conglomerate Marubeni. Skeleton, which was founded back in 2009 in Tallinn, manufactures fast-charging energy storage systems for transport, maritime, the grid, and medical equipment. Its secret sauce is its own material, Curved Graphene, which increases how much energy can be stored in its supercapacitors. The fresh funds, which bring Skeleton's total raised to over 300 million euros (around $316 million), is a mixture of equity and debt. Marubeni, meanwhile, distributes Skeleton's products in Asia and helps it secure customers in the region.

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Persons: Taavi Madiberk, Warren Buffet's Berkshire Hathaway, Skeleton's, Madiberk Organizations: Technologies, Siemens, Strategic, Siemens Financial Services, Marubeni Corporation, North America Locations: Tallinn, Germany, Asia, North