Powering the blue economy: Meet the Clean Maritime Energy ventures of the AquaSphere 2026 Cohort

The energy transition has a geography problem.  Wind and solar have transformed the grid in many parts of the world but they leave critical gaps: remote communities still running on diesel, maritime operations still dependent on fossil fuels, coastlines and rivers whose energy potential remains entirely untapped. The five ventures in the Clean Maritime Energy & Sustainable Infrastructure cluster of the AquaSphere 2026 Cohort are each attacking a different part of this problem, from hydrokinetic river systems to wind-assisted shipping, from wave energy to waste-heat recovery at sea.  🇩🇰 Millfield Technology ApS : Hydropower without dams  Most hydropower requires dams, civil works, and years of permitting. Millfield Technology has built a different kind of system entirely. Its Millfield Flow Converter (MFC) generates electricity by harnessing river flow through a crane-like structure with horizontal and vertical wings, no dam, no major infrastructure, installed in a single day from a standard 40-foot container. Validated by the Technical University of Denmark and supported by 60+ investors,…

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AquaSphere Accelerator 2026 Kicks Off with 19 Ventures from 14 Countries

Nineteen visionary companies selected from across the globe to drive the future of the blue economy. At a glance Athens, Greece – May 2026. The AquaSphere Accelerator 2026 has officially kicked off, bringing together an extraordinary cohort of ocean and water technology innovators from four continents. On Monday, 4 May…

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Accelerate Your Blue Economy Venture with AquaSphere. Round 2 is now open ! 

The AquaSphere Accelerator 2026 (Round 2) is officially open for applications.  Building on the success of our first round (bringing together over 10 start-ups from 9 countries), we are now launching a second call. This second open call will welcome 16 new start-ups to join the growing AquaSphere Accelerator Community, offering them the opportunity to accelerate their innovation, visibility, and impact.  If you’re an ambitious startup or scale-up creating…

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