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.

Supercapacitors aren’t as well-known as batteries, but they play an important role in the energy storage landscape. Unlike batteries, they can charge and discharge almost instantly, making them ideal for applications that require short, powerful bursts of energy. In this episode, I chat with Lars Stegmann, CEO at CAP-XX, the company behind the world’s thinnest supercapacitors. We explore how the technology works, why it matters for the energy transition and how CAP-XX powers a green transition.

What if we could build without cement? In this episode, one of the world’s most used, yet climate-damaging materials makes an appereance: cement. Gnanli Landrou, co-founder of Oxara, explains how the ETH Zurich spin-off turns demolition waste and clay into clean, circular building materials. With cement-free binders that cut emissions and reduce construction waste, Oxara opens the door to affordable, low-carbon housing. Tune in to hear how the team is building a future that’s cleaner and smarter — without cement.

Enhanced weathering uses finely ground minerals spread on farmland to speed up a natural process: rocks reacting with CO2 to form stable carbon compounds. This process not only captures and stores C02 for thousands of years but also improves soil health and crop yields. Hannes, COO and co-founder at ZeroEx, explains how the company closes the loop in the enhanced weathering space. To issue the right carbon credits, the company models the expected CO2 sequestration potential based on data collected, implements the projects and has each certificate verified. ZeroEx is at an exciting moment in the scale-up journey. Tune in to learn more!

What if materials could (almost) magically repair themselves? When I witnessed it firsthand, I thought it was magic - it's "just" science in action. We cover how CompPair is revolutionizing composites with their self-healing technology. CEO Amaël shares how their materials extend the lifetime of composite parts, reduce waste, and unlock new economic opportunities. From aerospace to sporting goods, CompPair’s approach sets the stage for a smarter, more sustainable future in materials science.

What if carbon removal started with the oceans? In this episode, we dive into how Pronoe is restoring the ocean’s power to capture and store CO₂. Founder and CEO Nicolas explains how their automated water treatment systems, placed downstream from industrial sites, reduce ocean acidification and enhance the natural carbon sink—all while using existing infrastructure. By turning return flows into climate assets, Pronoe supports healthier oceans and a cooler planet. Tune in to learn how this ocean-first, asset-light approach could reshape carbon removal at scale.

What if heat could be stored in a compact form? In this episode, we dive into how Cowa is revolutionizing energy storage through cutting-edge phase change materials. The Swiss company enables homes to transition to sustainable storage solutions, making the most out of often limited space. In this conversation with the company's CRO, we dive into the business model, their traction and award-winning technology and what's next for them. If you're interested in storage, watch this hot company!

What if comfort could be climate-friendly? This is the question that Florina Mînzat posed. And she found an answer. As the founder of EcothermiQ, a company bringing passive, low-carbon thermal comfort into our homes, she works to launch smart, easy-to-integrate solutions. EcothermiQ makes it possible to feel good indoors while reducing emissions. Flo also shares the unconventional path that led her to launch a climate tech startup—an unconventional path by her own accord. This is for you if you're looking for inspiration and hope during these turbulent times.

What if new materials power the energy transition? In this episode, we explore the cutting edge of chemical energy storage with breakthrough materials that make storing and releasing energy more efficient, scalable, and sustainable. Maryam dives into her personal journey of becoming a founder and continuously striving for excellence. She shares the science behind Planck, their customers, and how a niche position helps them to provide a lot of value.

What if we could unearth natural hydrogen? In this episode, Emmanuel from Mantle8 shares how they are pioneering the search for the Earth’s naturally occurring hydrogen reservoirs. As a new generation of geologists, Mantle8 uses bottom-up exploration and decades of expertise to unlock this untapped energy source. We discuss the science behind natural hydrogen and why it matters, how Mantle8’s approach differs from traditional approaches and what their secret sauce is. Natural hydrogen is one of the hottest topics in the climate tech industry right now, so this is a conversation you won’t want to miss!

What if designing district heating networks became simple? In this episode, I sit down with Stefano, founder and CEO of Planeto, to explore how their technology transforms how energy planners develop district heating and cooling systems. Those networks are crucial for the energy transition, yet often overlooked. Planeto makes creating efficient, future-proof networks that accelerate the energy transition easier. Stefano shares the inspiration behind the company, the challenges of scaling such a solution, and why district energy is a crucial piece of the clean energy puzzle. Tune in to learn how digital tools can unlock the future of urban heating and cooling.

What if melting and freezing powered the world? In this episode, we dive into the fascinating world of phase-change materials and their game-changing role in energy storage. By leveraging the unique properties of those materials, Cartesian has developed a solution that efficiently stores and releases energy as materials transition between solid and liquid states. Co-founder and CTO Alexis shares how he identified the solution, how it works in practice, its applications in the built environment and its future potential. If you're interested in storage solutions, this one is for you.

What if we unlocked the full potential of underground heat? In this episode, we dive into how Enerdrape is revolutionizing renewable energy by turning underground spaces into sources of heating and cooling with the world’s first geothermal panel technology. This patented solution harnesses shallow geothermal without drilling or direct ground contact. Co-founder and CEO Margaux explains how parking lots, tunnels, and other underground spaces can become sustainable energy sources, reducing CO₂ emissions and transforming building energy systems. Learn why this technology could redefine how we think about renewable heating and cooling.

What if we create industrial heat differently? In this episode, we explore how SolidWatts transforms power-hungry industrial processes by enabling electrification for high-heat applications. By designing and building the world’s highest-performing Solid State Power Amplifiers, SolidWatts is changing how industries think about heat generation. We also discuss the unique journey of falling in love with a solution first and then finding the right problems to solve. Join us to learn about this innovative approach and the future of sustainable industrial heat.

What if we could use hydrogen everywhere? In this episode, we dive into how Neology is unlocking the potential of hydrogen through its innovative ammonia cracker technology. Using ammonia as an energy vector, hydrogen can be transported and transformed independently of where it's produced We explore the current hydrogen landscape, exciting applications across industries, and Neology’s ambitious scale-up plans. Tune in to learn how Aris and his team use their experience to deliver an important piece of the energy transition.

What if we could store energy in water? We explore how Aquabattery is transforming energy storage with its groundbreaking technology, which uses just table salt and water. CEO JJ shares how this affordable, sustainable, and safe solution reshapes large-scale energy storage. We also dive into JJ’s passion for running marathons and what it takes to keep pushing forward, even through the rollercoaster journeys of entrepreneurship. This episode covers how to start and scale a company, lessons on resilience, and what the future of energy storage could look like.

What if we could turn coffee waste into green chemicals? In this episode, I chat with Maciej Majchrowicz, a former VC investor turned operator, who is now transforming coffee waste into valuable green chemicals. Maciej shares the unique advantages of Ecobean's approach, emphasizing the importance of being a drop-in solution that seamlessly integrates into existing systems. We also explore how European coffee drinking habits are shaping their business scaling strategy.

What if we had all the necessary technology to drive the energy transition? In this episode, I speak with Benjamin, CEO of ecocoach. With a strong commitment to energy independence, ecocoach is at the forefront of developing efficient energy management solutions and pioneering battery storage systems. Benjamin shares insights on how they leverage technology to empower individuals, communities, and businesses to achieve true energy autonomy. Tune in to learn more about ecocoach and Benjamin's own fascinating journey.