Oxford, UK, 16 March 2026: Densix, an Oxford University spinout developing next-generation power conversion technology, today announced it has closed a $4m seed funding round with investment from Parkwalk, Oxford Science Enterprises (OSE) and the University of Oxford Innovation Fund.
Densix is developing a new class of ultra-dense power converters designed to dramatically increase power density while improving thermal management and system efficiency.
The company’s proprietary technology enables power converters with up to 8x smaller form factor than conventional solutions at comparable power levels.
Addressing a critical infrastructure bottleneck
As AI computing, electrified transport and renewable energy scale globally, power density is becoming a defining constraint in both digital and energy infrastructure.
In particular, AI computing is driving the adoption of higher-voltage DC architectures for next-generation high-density compute racks.
The compact form factor and unrivalled thermal management of Densix’s power conversion technology enable higher compute efficiency and lower cost of compute for data centre operators through:
- Higher compute density per rack
- Improved energy efficiency
- Reduced cooling burden
- Greater flexibility in system architecture
The same applies to the power grid, where a step-change in power density facilitates more flexible upgrading of power distribution within existing physical footprints in densely populated urban or space-constrained locations. This helps utilities and infrastructure operators avoid costly civil works and deliver more cost-effective acceleration of electrification.
The global data centre power supply unit (PSU) market alone is projected to reach approximately $6.5bn by 20311. With a growing team of experts, foundational IP and a commitment to pushing the boundaries of power density, Densix is well positioned to capitalize on rapid expansion in these global markets.
Anders Hakfelt, CEO and Co-Founder of Densix, said: “Power density will be a defining constraint for the next generation of digital and energy infrastructure. At Densix, we are developing technologies to deliver dramatically higher performance within a smaller footprint. This funding marks an important milestone for the company and validates our vision to deliver industry-leading power-density solutions. The investment will enable us to accelerate product development, expand our team, and further strengthen our IP and technology platform. We look forward to working with partners across the data centre and power grid sectors to bring next-generation solutions to market.”
Unique technology with global markets, developed in Oxford
Born out of over six years of research from the University of Oxford’s department of Engineering Science led by Professor Dan Rogers, a patent pending technology for ultra-dense power conversion has been developed. The company was supported from the earliest stages by Oxford University Innovation (OUI), which worked with the founders to protect the intellectual property, leverage its Venture Scout programme to help build the leadership team and accelerate early investment momentum, and secure proof-of-concept funding through the University Challenge Seed Fund (UCSF).
Professor Dan Rogers, Chief Science Officer and Co-founder of Densix, said: “Conventional power conversion technologies are reaching the limits of their capabilities, particularly in high-density data centre and grid applications. Densix’s technology was developed to fundamentally rethink how higher power density is achieved without compromising efficiency or reliability. This creates new design freedoms for next-generation energy and digital infrastructure. I look forward to working with our fantastic engineering team to deliver a real step-change in power density and power converter performance.”
Alun Williams, Investment Director at Parkwalk, said: “Densix epitomises Parkwalk’s investment focus. A hugely talented team applying fundamental science developed within a leading UK university to address a vast market need. We are delighted to be joining Anders and the team on this exciting journey.”