November 24, 2025: Skeleton Technologies, the supercapacitor manufacturer, has announced the formal opening of its €50 million ($58 million) SuperBattery factory in Finland.

The firm said on November 11 the plant in Varkaus, with a 1GW annual capacity, is Europe’s first producing high-power batteries for AI datacenters. It is also said to be the first globally to industrialize backup power systems for mission-critical computing and emerging sectors such as nuclear fusion.

Technology used at the plant is powered in partnership with Brazil-based CBMM’s NBXCELER niobium oxides.

Niobium-based materials enhance battery safety, performance, and lifetime, enabling faster charging, longer durability, and greater reliability for demanding AI and industrial applications.

The plant’s site was formerly owned by European Batteries, a pioneering LFP battery developer.

Skeleton said its investment in the site revives the local battery ecosystem and gives new purpose to one of Finland’s historic centers of battery innovation.

Taavi Madiberk, Skeleton’s CEO and co-founder, said AI, mobility, and the grid of the future all require extreme power, reliability, and sustainability.

“Varkaus symbolizes the fusion of European deep-tech innovation, Finnish industrial heritage, and advanced materials expertise from global leaders like CBMM.”

Ricardo Lima, CEO of CBMM, said: “Niobium plays a key role in shaping a more sustainable future. Our partnership with Skeleton demonstrates how Niobium can make AI infrastructure safer, longer lasting, and more efficient.”

Batteries International reported last year that CBMM and British battery developer, Echion, had opened a niobium-based anode material production plant in Araxá, Brazil which they said was poised to revolutionize the lithium ion battery industry by enabling ultra-fast charging and enhanced performance.