Rooted in Change

Clean water is one of the defining challenges of our time and even its own Sustainable Development Goal. One essential piece of the puzzle is wastewater purification. That’s exactly where Stockholm Water Technology comes in. Their team has developed a chemical- and membrane-free purification technology that uses only electricity to remove contaminants and even recover valuable nutrients. In this episode, I talk with Karthik about how their technology works, why it matters and what it could mean for the future of water treatment. We also dive into an unexpected angle: the lessons he brings from his career as a professional...

As the heating season kicks off, energy use and energy bills start climbing fast. In this episode, I talk with Felix, co-founder and CEO at viboo, who are tackling this challenge head-on. Their platform uses AI-driven heating control to help light commercial buildings save energy, cut costs, and reduce CO₂ emissions. We dive into how their solution works, why it’s particularly effective for light commercial buildings, and how it makes energy efficiency both smart and affordable and how buildings can become an active part of the energy transition.

Unbound Potential is rethinking batteries. By removing costly membranes and complex cell stacks, their membrane-free redox flow technology stores energy in two liquids with minimal hardware, lasting over 20,000 cycles. I chat with the company's CFO Emilio Dal Re about how it works, why it matters for the energy transition, and the recent pre-seed funding plus early pilots with companies like Amazon.

Waste streams are often overlooked, but they hold enormous potential. TreaTech has developed a technology that captures the full value of a broad range of end products - from renewable gas to clean water, salts and minerals - turning waste into valuable resources. In this episode, I chat with Frederic, co-founder of TreaTech, about how the technology works, why it’s a game-changer for the waste treatment industry and how it could help build a truly circular economy. We also dive into the challenges of scaling this approach and what’s next for the company.