Skeleton Technologies Opens €220M German Supercapacitor Plant, Eyes AI Data Center Expansion November 28, 2025 Estonian energy storage firm Skeleton Technologies has inaugurated a major new manufacturing facility in Germany, marking a significant strategic move to capture a growing share of the power infrastructure market for artificial intelligence data centers. The company's advanced supercapacitor technology is increasingly viewed as a critical solution for managing the extreme and volatile power demands of AI computing clusters. The company officially opened its €220 million ($192.5 million) "SuperFactory" in Markranstädt, near Leipzig, Germany. The plant is dedicated to producing Skeleton's curved-graphene supercapacitors, which are high-power energy storage devices designed to respond to sharp load fluctuations in under a millisecond. According to CEO Taavi Madiberk, the facility represents a fully integrated European value chain, covering production from raw materials to finished power electronics, with an annual capacity of up to 12 million cells. The devices contain no lithium, cobalt, or other flammable critical materials. Madiberk stated that production lines at the German site are already shipping systems to major U.S. hyperscale data center operators. The company has also deployed its technology across European electrical grids in partnership with industrial giants like Siemens, Hitachi Energy, and General Electric. Explaining the choice of location, Madiberk told Data Center Dynamics that "Leipzig and Saxony have the highest density of Fraunhofer institutes in Germany and a long tradition of high-quality, high-volume manufacturing. We wanted the best of Estonian entrepreneurship with the best of German engineering." The launch is strategically timed to address the unique challenges of AI infrastructure. AI workloads cause massive and rapid swings in power consumption, straining both on-site power systems and the local grid. Skeleton claims its "GrapheneGPU" solution acts as a fast-response buffer, smoothing these peaks. Madiberk asserts this can lead to energy savings of up to 40 percent and reduce the required grid capacity for a GPU cluster by almost half. "For operators, it’s a capex question. For Europe, it’s also an energy-security question," he said. Furthermore, the technology addresses the issue of "GPU burn," where processors are intentionally throttled to manage heat. By providing instantaneous power, Skeleton's systems can eliminate this need, potentially increasing actual GPU computing output by up to 40 percent. "Cooling can remove heat from the outside, but nothing removes heat from inside the GPU. That’s why this matters," Madiberk emphasized. While cementing its European base, Skeleton is planning a transatlantic expansion. "The market is clearly in the U.S.," Madiberk noted, revealing plans to open a manufacturing facility in California early next year. He also highlighted the Middle East, particularly Saudi Arabia, as a region with significant growth potential. The Leipzig opening follows the recent launch of the company's SuperBattery factory in Varkaus, Finland. Founded in 2009, Skeleton's investors include Siemens Financial Services and Marubeni Corporation. Source: datacenterdynamics
Skeleton Technologies Opens €220M German Supercapacitor Plant, Eyes AI Data Center Expansion
