Vensum Power raises €9M Series A to cut power losses

Finnish deeptech company Vensum Power has raised a €9 million Series A, co-led by Lifeline Ventures, Larsen & Toubro Group and Eviny Ventures, to put its software-defined power converters into mass production in 2027.

Three co-leads and two returning backers

Tech.eu and ArcticStartup reported the round on 6 November 2026. Lifeline Ventures, an existing investor, shares the lead with two new names, Larsen & Toubro Group and Eviny Ventures. Grid.vc and Harjavalta Ventures, both already on the cap table, took part again.

With this round, Vensum Power has raised €15.2 million in total, according to Tech.eu. The money moves the company, in the words of CEO Peter Nisula, “from developing technology to delivering it at industrial scale”. The first products, for EV charging, energy storage and DC microgrids, are due in mass production in 2027 at manufacturing partners. AI data centers come next.

Twenty people and a converter that behaves like software

Founded in 2018 and based in Finland, Vensum Power employs about 20 people, per ArcticStartup. Its product is a software-defined power conversion platform: the hardware that turns one form of electricity into another, with the control logic written as software. StartupRise describes the converters as among the smallest in their power category.

The pitch is consistency. “Thanks to the software-defined approach, our converters operate consistently at extremely high efficiency,” Nisula told Tech.eu, including when the load changes. Every percentage point of conversion loss turns into heat and a larger electricity bill, which is why a small gain repeats across thousands of chargers, batteries and server racks.

A $35bn market growing 7.5% a year

The market Vensum Power is walking into is the power side of the data center. MarketsandMarkets valued global data center power at $35.14 billion in 2025 and projects $50.51 billion by 2030, a 7.5% CAGR (press release, 23 September 2025). That figure covers the whole category, from power distribution to backup systems, so the converter slice is smaller, and a vendor forecast is best read as an order of magnitude. EV charging and storage add their own demand on top. No sizing exists that isolates Vensum Power’s exact segment.

For scale, our own records show the neighbors. Green Voltis raised €13.5M in a Series A on 5 November to trade batteries across Europe, and Salience Labs raised $125M in a Series B in October to wire AI clusters with light. A €9M Series A sits at the modest end of that range, and it is a normal size for a hardware company heading toward its first production run. Every round is tracked in our fundraising data.

Grid access is the new chip shortage

The reality is that the AI buildout has run into the electricity grid. “Access to power has become the main bottleneck,” Nisula said. Prashant Chiranjive Jain, managing director of L&T Vyoma and head of L&T Electronic Products & Systems, put the same problem in competitive terms: “Data centers are competing with every other sector for the same grid capacity.”

The silver lining is that losses in conversion can be attacked in software and in small hardware, without waiting years for new transmission lines. Andreas Engelsen, CEO of Eviny Ventures, said Vensum Power “cuts those losses in areas we know well”. When a corporate group from outside the Nordics joins two venture firms in a co-lead, the signal is that power efficiency has moved from the engineering budget to the strategy table.

Imagine if a 20-person Finnish team ships converters at volume and every new data center hall needs a few percent less grid than planned. That is what to watch in 2027: first production runs, the first data center design win, and whether the €9M stretches to both. Europe has the engineers and now the capital to find out. Let’s see them build it!