Founded in Zurich in 2025 by Daniel Rothmund and Sami Pettersson, Hyperscale Power is developing compact solid-state transformers (SSTs) with an energy-conversion efficiency of up to 98.5%. The technology is designed to replace conventional passive transformers, which the company says are increasingly mismatched with the high-density power requirements of modern loads.

AI compute, electrification and electric vehicle (EV) fast charging are straining a transformer supply chain that has not evolved significantly in decades. Lead times have stretched, while the power demands of modern server racks continue to grow. The company points to plans by hyperscalers—large-scale cloud service providers—to invest more than $2 trillion into AI infrastructure by 2030 as a key driver of demand for its technology.

Daniel Rothmund, Hyperscale Power’s co-founder, said: “Our mission is to rethink how power is delivered to the systems driving the next industrial revolution. Data centers, EV chargers, and large-scale renewable projects all face the same bottleneck: efficiently and safely converting massive amounts of electricity. Our solid-state transformers provide a smaller, lighter, and cleaner alternative that can reduce material use and emissions.”

Hyperscale Power has raised a EUR 5 million seed round co-led by World Fund and Vsquared Ventures. World Fund is a leading European venture capital fund investing in climate tech companies with significant decarbonization potential, while Vsquared Ventures backs bold entrepreneurs engineering groundbreaking technologies.

"Data centres alone are driving multi-gigawatt power needs, and grid losses waste around 6–8% of all electricity generated globally. A 2% efficiency gain at this scale translates into millions of tonnes of CO₂ avoided. We’re thrilled to back Daniel and Sami as they tackle this bottleneck head-on, with solid-state transformers built for the realities of modern loads,” says Daria Saharova, Managing Partner at World Fund.

The Hyperscale Power team will use the new funding to establish a lab and office space, grow the team, and accelerate prototype development. Their roots in Switzerland’s precision-engineering ecosystem and their proximity to ETH Zürich ensure long-term access to Europe’s top technical talent. Daniel Rothmund is an ETH Alumni himself. After finishing his PhD he worked for ABB as scientist and principal scientist.

Photo: Hyperscale Power Founders: left, CTO Sami Pettersson; right, CEO Daniel Rothmund. Image courtesy of Hyperscale Power.

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