Vensum Power Raises $10 Million Series A to Cut Power Losses in AI Data Centers and EV Charging

Finnish deep-tech company Vensum Power has raised €9 million — about $10 million — in a Series A round to bring its software-controlled power converters into mass production. Lifeline Ventures, Indian engineering giant Larsen & Toubro (L&T) and Eviny Ventures co-led the round, with existing backers Grid.vc and Harjavalta Ventures also participating.

The Helsinki-based company says its technology delivers near-lossless power conversion, a pitch that has picked up urgency as AI data centers strain electrical grids around the world.

What Vensum Power Builds

Founded in 2018 by Jyrki Penttonen and Mika Marjalaakso, Vensum develops power converters controlled by software rather than fixed hardware logic. A 2024 Aalto University interview estimated the approach yields conversion losses of 3% to 5%, compared with 7% to 10% for conventional converters.

The company argues the bigger advantage is consistency. "We improve the best case, of course, but more importantly, we improve the worst case," COO Tero Lehtonen told Tech Funding News. Higher efficiency can also let manufacturers build smaller converters, or pack more power output into the same footprint.

Vensum's first products target EV charging, energy storage and DC microgrids. Data centers are next on the roadmap, with Nvidia's 800V data center architecture named as a target. The company sells to converter OEMs, all of them based outside Finland.

How the Funding Will Be Used

The Series A will move Vensum from development into manufacturing and mass production, with revenue expected in 2027. CEO Peter Nisula leads a team of about 20 people, and the company is hiring.

The new round brings total funding to €15.2 million. Vensum previously raised a €3.8 million seed round in May 2023, led by Lifeline Ventures with Grid.vc, Harjavalta and Business Finland.

The Strategic Investors

The co-lead lineup pairs a top Nordic venture firm with two strategic players. Lifeline Ventures closed a €400 million sixth fund in October 2025. Eviny Ventures is the venture arm of Bergen-based renewable energy company Eviny, and CEO Andreas Engelsen said Vensum cuts losses in areas his firm knows well, including EV charging, energy production and storage.

L&T's participation may be the most telling. The Indian conglomerate launched an industrial electronics arm in April 2026, and its data center unit, L&T Vyoma, has a proposed 250MW campus in Gujarat. "Data centers are competing with every other sector for the same grid capacity," said L&T's Prashant Chiranjive Jain.

Why It Matters

Every percentage point lost in power conversion turns into wasted electricity and extra heat that must be cooled away. At the scale of modern AI data centers, a few points of efficiency translate into significant savings and freed-up grid capacity.

With AI infrastructure spending accelerating and grid connections becoming a bottleneck, hardware that squeezes more usable power out of existing supply is moving from a niche engineering concern to a board-level priority — and Vensum is betting its converters can be part of that shift.

Source

Tech Funding News — "Vensum Power lands €9M to expand its power converters for AI data centres"