Power Electronics Startup Vensum Power Raises €9M ($10.4M) Funding to Cut Energy Losses in AI Data Centres

Vensum Power, the Finnish startup developing software-controlled power converters, has raised €9 million ($10.4 million) in Series A funding co-led by Lifeline Ventures, Larsen & Toubro, and Eviny Ventures, with participation from existing investors Grid.vc and Harjavalta Ventures. The round brings Vensum Power’s total funding to approximately €15.2 million, following a €3.8 million seed round in May 2023 . The company did not disclose its valuation.

The funding’s primary driver is to move into volume production, with revenue expected in 2027. Initial products will target EV charging, energy storage, and DC microgrids, with AI data centres as the next area of focus—including Nvidia’s 800V data centre architecture .

Vensum Power Funding Overview By CREDX Media

Startup Name	Vensum Power
Founders	Jyrki Penttonen, Mika Marjalaakso
Founded	2018
HQ	Helsinki, Finland
Round	Series A Funding
Amount Raised	€9M ($10.4M)
Valuation	Not disclosed
Category	Power Electronics, Energy Efficiency, Data Centre Infrastructure
Lead Investors	Lifeline Ventures, Larsen & Toubro, Eviny Ventures
Key Investors	Grid.vc, Harjavalta Ventures, Business Finland
Total Funding Raised	~€15.2M
Employees	20
Key Technology	Software-controlled power converters
Loss Reduction	3-5% vs 7-10% for conventional converters

💡 Use of Funds

• Volume Production: Moving to mass production of software-controlled power converters by 2027 .
• Customer Expansion: Scaling with converter OEMs, all currently outside Finland .
• Team Growth: Hiring beyond the current 20 employees .

Startup Overview: Vensum Power

What Vensum Power Is Building in Simple Words

Vensum Power has built software-controlled power converters that reduce energy losses when electricity is converted from one form to another. Every conversion—from AC to DC, or between voltage levels—loses some energy as heat. Conventional converters lose 7-10%; Vensum Power claims its technology reduces that to 3-5% .

The key differentiator is not just improving peak efficiency, but improving the worst case. COO Tero Lehtonen framed it: “The marketing term efficiency generally refers to the top performance, the best case scenario, the peak performance. We improve the best case, of course, but more importantly, we improve the worst case. We straighten the line” .

• Software-Controlled Conversion: The converters use software to actively manage the conversion process, reducing losses across the operating range .
• More Tokens Per Watt: In AI data centres, reducing power loss means more of the available electricity goes to compute—allowing operators to process more tokens .
• Smaller Footprint or Higher Output: The technology can enable smaller converters or higher power output without requiring more space .
• Targeting Nvidia’s 800V Architecture: Vensum is next looking at Nvidia’s 800V data centre designs, which require efficient conversion at higher voltages .

Why Vensum Power Matters

• Grid capacity is the constraint on AI growth: Prashant Chiranjive Jain of Larsen & Toubro framed the problem: “Data centers are competing with every other sector for the same grid capacity, and Vensum Power tackles one of the most overlooked inefficiencies in the system: converting power into a form that equipment can use optimally” .
• Measurable loss reduction: Reducing conversion losses from 7-10% to 3-5% means roughly 40-50% less wasted energy in the conversion stage. At data centre scale, that translates into significant cost and capacity savings.
• Finland’s deep tech sector is growing: According to Business Finland, the country’s deep tech sector brought in $1.5 billion in VC funding in 2024 .
• Strategic industrial investors: Larsen & Toubro and Eviny Ventures aren’t just financial investors—they’re industrial groups with direct exposure to the problem Vensum solves .

Founder Background: The Aalto Researchers Who Saw the Grid Strain Coming

Jyrki Penttonen and Mika Marjalaakso founded Vensum Power in 2018. Both studied at Helsinki University of Technology, now Aalto University. Penttonen earned a PhD from Aalto and previously worked in Aalto’s power conversion research group .

CEO Peter Nisula says the idea stemmed from conversations with Aalto professors concerned about the strain the future energy system would put on the grid .

COO Tero Lehtonen describes Vensum Power as his first complete founder experience. His framing of the company’s purpose: “The aim is to create products that make people feel, ‘this is how it should have been all along.’ Electrification is the path to a society no longer reliant on fossil fuels” .

Founder Intelligence: What Founders Can Learn from Vensum Power

• Improve the worst case, not just the best case: Most power electronics marketing focuses on peak efficiency. Vensum’s insight is that real-world performance is defined by the worst case, and that’s where the biggest gains are available.
• Target the constraint everyone shares: Data centres, EV charging, and energy storage all compete for the same grid capacity. Vensum’s technology addresses a bottleneck that every electrification sector faces.
• Raise from industrial investors, not just VCs: Larsen & Toubro and Eviny Ventures bring more than capital—they bring industry relationships and potential customer channels.
• Solve the problem you researched: Vensum emerged from Aalto’s power conversion research group, addressing a concern professors had about future grid strain. Academic depth became industrial advantage.

Investor Intelligence: Why This Round Gets Premium Capital

Lifeline Ventures, an existing investor, co-led the round. Larsen & Toubro and Eviny Ventures also co-led as new industrial investors.

Prashant Chiranjive Jain, Managing Director of L&T Vyoma and head of the electronics division at Larsen & Toubro, framed the thesis: “Data centers are competing with every other sector for the same grid capacity, and Vensum Power tackles one of the most overlooked inefficiencies in the system: converting power into a form that equipment can use optimally. The global energy transition and the growth of digital infrastructure both depend on getting this right, at scale” .

Andreas Engelsen, CEO of Eviny Ventures, added: “Through our own operations, we see every day how much value is lost when power is converted on its way to where it is needed. Vensum Power cuts those losses in areas we know well, such as EV charging, energy production, and energy storage” .

The investor composition signals conviction: Lifeline’s continued support, plus two industrial groups with direct exposure to the problem, position Vensum to scale into production with customers who understand the value of loss reduction .

The Road Ahead for Vensum Power

Expansion Targets

With €9 million in capital, Vensum Power will:

• Move into volume production by 2027, with initial products for EV charging, energy storage, and DC microgrids .
• Target AI data centres next, including Nvidia’s 800V architecture .
• Grow its team beyond the current 20 employees .

The Competitive Question

Vensum operates in a hardware space where solid-state transformer companies have been far more active:

• Heron Power closed a $140 million Series B in February 2026 to build a 40GW factory.
• DG Matrix secured $60 million that month, led by Engine Ventures.
• Amperesand raised $80 million in November 2025.
• Hyperscale Power raised a €5 million seed round in March 2026.

Vensum’s €9 million is smaller than many competitors. The key questions, as Tech Funding News noted, are whether Vensum will share measured loss curves at customers’ own operating points before revenue starts in 2027, and whether Larsen & Toubro and Eviny will become customers as well as shareholders.

Conclusion

Vensum Power’s €9 million Series A funding validates the thesis that conversion losses are an overlooked inefficiency in the electrification and AI infrastructure buildout. The company’s software-controlled converters—reducing losses from 7-10% to 3-5%—address a problem that every data centre, EV charger, and energy storage system faces.

Market tailwinds favor Vensum: AI data centres competing for grid capacity, European electrification targets, and industrial investors who see the value of loss reduction firsthand. Whether Vensum can scale to production by 2027 and compete with better-funded solid-state transformer companies remains to be proven—but the company has the technology, the team, and the industrial backing to try.

For deep analysis of energy tech funding, power electronics innovation, and companies reshaping data centre infrastructure, explore CREDX Media for comprehensive coverage of startup funding trends, valuation intelligence, and founder playbooks.

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Frequently Asked Questions

1. What is Vensum Power’s total funding and latest round size?
Vensum Power has raised approximately €15.2 million in total. Its €9 million Series A was co-led by Lifeline Ventures, Larsen & Toubro, and Eviny Ventures in November 2026.

2. How much did Vensum Power raise in its Series A round and who led the investment?
Vensum Power raised €9 million co-led by Lifeline Ventures, Larsen & Toubro, and Eviny Ventures, with participation from Grid.vc and Harjavalta Ventures.

3. What is the valuation of Vensum Power?
Vensum Power did not disclose its post-money valuation.

4. Who are the major investors in Vensum Power?
Major investors include Lifeline Ventures, Larsen & Toubro, and Eviny Ventures (co-leads), plus Grid.vc, Harjavalta Ventures, and Business Finland.

5. Who are Vensum Power’s founders?
Vensum Power was founded in 2018 by Jyrki Penttonen and Mika Marjalaakso, both Aalto University alumni.

6. What is Vensum Power’s business model?
Vensum Power sells software-controlled power converters to converter OEMs. The company is moving into volume production with revenue expected in 2027.

7. How does Vensum Power’s technology work?
Vensum’s converters use software to control the power conversion process, reducing energy losses from 7-10% (conventional) to 3-5%. The technology improves both peak and worst-case efficiency across the operating range .

8. What traction justifies Vensum Power’s Series A funding?
Vensum has 20 employees, is backed by industrial groups including Larsen & Toubro and Eviny, and is preparing for volume production by 2027. The company’s technology has been validated through its Aalto University research roots.

9. What are Vensum Power’s plans for the €9 million Series A capital?
Vensum will move into volume production, grow its team, and expand its customer base with converter OEMs outside Finland.

10. Who are Vensum Power’s main competitors?
Competitors include solid-state transformer companies like Heron Power ($140M Series B), DG Matrix ($60M), Amperesand ($80M), and Hyperscale Power (€5M seed).

11. Who is the CEO of Vensum Power?
Peter Nisula serves as CEO. He says the idea for the company stemmed from conversations with Aalto professors concerned about future grid strain.