Best ClimateTech Podcasts (2025)

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379: Another Side of Sebastian Manhart... 1:00:36

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2d ago1:00:36

1:00:36

It's that special time of year to put away worldly cares and focus on family, giving, and... carbon removal? Did I read that right? Come hang with Ross and CDR force of nature Sebastian Manhart to discuss family, parenthood, hope for the future, the quest to expand the moral sphere, and why we should be focusing on trendlines and not headlines. Hap…

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Devrim Celal – Kraken 51:45

7d ago51:45

51:45

Devrim Celal– Kraken In this episode of Leaders in Cleantech, David Hunt is joined once again by Devrim Celal, Chief Flexibility & Marketing Officer at Kraken, nearly six years after their first conversation in 2019—back when Devrim was CEO of Upside Energy. Since then, Upside Energy was acquired by Octopus Energy and evolved into Kraken, now one o…

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378: When Bad Companies Buy Good Carbon Removal 37:52

10d ago37:52

37:52

Is the voluntary carbon market a club for saints? Or is it a hospital for sinners? Are we meant to understand all and then to forgive all? How much time are we meant to devote to idealistic abstinence-esque policies for change, and how much of our professional lives should go to harm reduction? Today's show deals with some of the biggest questions …

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ASMR: Your one-hundred year-old Norwegian tall ship is sailing in the middle of the Pacific Ocean 28:44

13d ago28:44

28:44

Gentle wind, sail, and ocean sounds with looped video taken during a trip from Seattle to San Francisco aboard the Statsraad Lehmkuhl for the One Ocean Expedition.

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377: One Week Before the Mast—A Climate Sailing Travelogue from Seattle to San Francisco 1:03:03

16d ago1:03:03

1:03:03

One could fly to the Bay Area in about ninety minutes, but what if it took a week, enormous amounts of teamwork on a 111-year-old Norwegian sailing barque, and caused a near-universal seasickness in thirty-foot seas? Today's show is a monologue about my experience sailing from Seattle to San Francisco on the Statsraad Lehmkuhl for the One Ocean Exp…

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The AI bubble 29:35

19d ago29:35

29:35

In this episode, Herman and Jason dive into the question of whether we're witnessing an AI bubble. We explore the massive data centre build out happening around the world & whether the massive investment in AI is actually going to benefit anyone. Feedback, comments and questions: Feedback Form Some of the topics discussed in this episode of the Ide…

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Juergen Mayerhofer – enspired 42:50

22d ago42:50

42:50

In this episode of Leaders in Cleantech, I speak with Juergen Mayerhofer, CEO and co-founder of enspired, the Vienna-based company using fully automated, AI-driven trading to optimise flexible power assets – especially grid-scale batteries – across multiple European markets. Juergen shares how he stumbled into energy via Austrian gas market liberal…

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376: The Tragedy of Stratospheric Aerosol Injection—w/ Dr. Shuchi Talati of The Alliance for Just Deliberation on Solar Geoengineering 1:21:57

22d ago1:21:57

1:21:57

Long a pariah climate solution, Stratospheric Aerosol Injection (SAI) is having its mainstream moment. As the climate movement ponders the planet's deep overshoot, more conversations about geoengineering, solar radiation management, global cooling, etc. are taking place in the open. Moreover, for-profit entities are raising venture rounds, with Sta…

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Empty calorie news 33:58

1M ago33:58

33:58

Jason and Herman dive into the complex world of modern news consumption and information overload. They explore how traditional media has evolved in the digital age, examining the challenges of finding reliable sources and the psychological effects of constant news exposure. Share your feedback, questions & comments here: ⁠⁠Feedback Form⁠⁠ Some of t…

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Sulnox Group (SNOXF) CEO on Cutting Costs and Carbon with a Drop-In Innovation 21:04

1M ago21:04

21:04

On this week's episode of the WTR Small-Cap Spotlight, Ben Richardson, CEO of Sulnox Group (US OTC: SNOXF) (UK ISDX: SNOX), joined Tim Gerdeman, Vice Chair & Co-Founder and Chief Marketing Officer of Water Tower Research, and Peter Gastreich, Energy and Sustainable Investing Analyst at Water Tower Research to discuss: 1) the company's patented orga…

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375: This CDR Marketplace Bought a Biochar Company. Now What?!—w/ Josiah Hunt of Pacific Biochar & Sophie Westover of Wren 1:03:40

1M ago1:03:40

1:03:40

Wren recently purchased a majority stake in Pacific Biochar, one of carbon removal's most prolific credit deliverers. What led to this deal, and will this model be emulated in a 2026 that might find carbon removal companies interested in (or maybe desperate for) deals that prolong runway and keep their companies alive? Wren is one of the oldest mar…

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374: Mining with Microbes: Biomimicry in Copper Extraction—w/ Liz Dennett, PhD, CEO & Founder of Endolith 51:07

1M ago51:07

51:07

What if microbes could help us mine responsibly? What if astrobiology—the study of life beyond Earth—held clues for how to fix the way we extract resources on Earth? Today’s guest is Liz Dennett, CEO and founder of Endolith, a biotech startup using microbes to boost copper recovery from mining waste. With a PhD in astrobiology, experience at NASA, …

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We are the Dead—Why I Love Armistice Day 23:29

1M ago23:29

23:29

World War I profoundly changed the world. Nation-states replaced empires. Russia went communist. Fascism arrived. The West's claim to being the most civilized peoples on Earth was supremely undermined. And out of so much suffering, we received a holiday prioritizing grief and mercy. This bonus episode is me speed-running World War I and sharing som…

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Westport Fuel Systems (WPRT) CEO on Strategic Shift and Technology for Low-Cost, Low-Emissions Heavy-Duty Trucking 13:47

2M ago13:47

13:47

On this week's episode of the WTR Small-Cap Spotlight, Dan Sceli, CEO of Westport Fuel Systems (NASDAQ: WPRT) (TSX: WPRT), joined Tim Gerdeman, Vice Chair & Co-Founder and Chief Marketing Officer of Water Tower Research, and Peter Gastreich, Energy and Sustainable Investing Analyst at Water Tower Research to discuss: 1) Westport’s leading position …

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Book club: Slow Productivity 39:35

2M ago39:35

39:35

In this episode we discuss Cal Newport's book Slow Productivity. We share how our views on "being productive" have changed from reading the book and talk about the general best practices we have to maintain momentum while working solo. Share your feedback and questions here: Feedback Form Some of the topics discussed in this episode of the Idea Roa…

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373: Crucial Questions We Must Answer about Adapting to Climate Change—w/ Dr. Susannah Fisher, author of Sink or Swim 58:57

2M ago58:57

58:57

Adaptation begins at home. But it doesn't end there. What do you plan on doing with your family as climate change gets worse? Are you already making plans whether to stay or go? How should states respond as people flee disaster? Who should get access to fish stocks as they migrate to new regions? Once one starts asking these questions, they really …

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Season 9: Episode 9 | The Climate for Climate Tech in the Gulf South 33:36

2M ago33:36

33:36

The Gulf South is on the front lines of climate change—facing immense challenges but also unique opportunities for innovation. This session explores how climate-tech and blue-tech startups can thrive in the region, featuring insights from investors, founders, and thought leaders shaping its future. Moderator: Beaux Jones, The Water Institute Paneli…

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372: Climate Change on the Battlefield: New Missions, New Kit, New Theaters—w/ Erin Sikorsky, Director of The Center for Climate and Security 58:21

2M ago58:21

58:21

Is climate change a fringe and woke distraction in military planning that inhibits lethality? Or is it invaluable strategic context for this century's power projection? What kinds of missions will soldiers be asked to perform in a world that is getting hotter and more complex? Today's guest is Erin Sikorsky, Director of The Center for Climate and S…

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Nuclear powered data centres 31:10

2M ago31:10

31:10

We talk about the state of South Africa's power grid, how we feel about nuclear being re-introduced and whether the global thirst for data centres can ever be quenched. Some of the topics discussed in this episode of the Idea Roastery: South Africa's improving energy landscape and potential solutions The revival of nuclear energy research and its i…

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Gregory Dewerpe – Noa 48:25

2M ago48:25

48:25

In this episode I’m joined by Gregory Dewerpe, Founder of NOA (formerly A/O), to cut through the noise on climate investing. We talk about the shift from abundance to discipline, why Europe and the US are now playing different games, and how AI will matter in the physical world—grids, buildings, materials—rather than the hype layer. Candid, practic…

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CapCO2 Solutions CEO on What Makes Green Methanol a Game-Changer for Midwest Ethanol and its Role in Supporting SAF 22:06

2M ago22:06

22:06

On this week's episode of the Sustainable Investing Surveyor Podcast, Jeff Bonar, Chief Executive Officer of privately held CapCO2 Solutions, joined Tim Gerdeman, Vice Chair & Co-Founder and Chief Marketing Officer of Water Tower Research, and Peter Gastreich, Energy and Sustainable Investing Analyst at Water Tower Research to discuss: 1) how CapCO…

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371: Can Carbon Removal Grow with Sports? Why Athletic Media Goes Up and to the Right—w/ Aidan Preston of Milkywire 53:47

2M ago53:47

53:47

Much of legacy media is dying. You know what isn't? Live sports. Where the outcome is uncertain, people want to watch. That means bringing together large numbers of fans and athletes. And what does that all add up to? Emissions. And emissions that could potentially be detached from profitability, leading to budgets large enough to support meaningfu…

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Eco Wave Power (WAVE) CEO on Transforming Ocean Energy Into Opportunity Across Four Continents 21:01

2M ago21:01

21:01

On this week's episode of the WTR Sustainable Investing Surveyor, Inna Braverman, Chief Executive Officer of Eco Wave Power Global (NASDAQ ticker WAVE), joined Tim Gerdeman, Vice Chair & Co-Founder and Chief Marketing Officer of Water Tower Research, and Peter Gastreich, Energy and Sustainable Investing Analyst at Water Tower Research to discuss: 1…

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Season 9: Episode 8 | Climate Resilience: Our Future Depends on It 35:47

2M ago35:47

35:47

This session explores the vital role of stormwater management in advancing New Orleans’ long-term climate resilience. Moderator Victoria Phipps (JPMorgan Chase) will guide a conversation with experts including Dr. Janell Hills (Interstate Renewable Energy Council), Diane Jones (University of Texas at Arlington), and City of New Orleans leaders Mary…

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Privacy & digital identities 34:55

2M ago34:55

34:55

We dip our toes in the complicated world of privacy and digital identities. We try to tease out the risks and benefits of detailed collection of information on citizens and companies. Some of the topics discussed in this episode of the Idea Roastery: - Data privacy and collection by private companies vs. governments - Digital identity systems and t…

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370: This CDR Legend Just Catalogued (Nearly) All Carbon Removal Companies—w/ Grant Faber 50:56

2M ago50:56

50:56

What happens when you build a list of very nearly every carbon dioxide removal company in existence? You get access to intriguing data and the pride of a very laborious job done well. Presumably you also get to take a nap. Grant Faber is a long-time carbon removal community fixture working on Life Cycle Analysis and Techno-Economic Assessment. Form…

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That's a Wrap! 🎬 Most Played: Nature needs a better bank, with Martin Stuchtey 29:51

2M ago29:51

29:51

🗒️ A note from Ryan, your host: I'm so happy to have put these 80 interviews out into the world, and have made new friends, connections, and gained tons of inspiration along the way. But duty calls at the moment as my volunteer work in Ukraine takes all my time and attention. So I'll call it a wrap for now and hope to be back with new episodes one …

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Liliane Ableitner – Exnaton 41:05

3M ago41:05

41:05

About Liliane Ableitner: Liliane is the co-founder and CEO of the climate tech startup exnaton. In 2019, she graduated with a PhD in information systems from one of Europe’s most renowned universities ETH Zurich. In 2020, she co-founded a startup with her two fellow PhD colleagues and was listed on the Forbes 30 under 30 list for young entrepreneur…

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Montana Renewables (Calumet NASDAQ: CLMT) CEO on First Mover Advantages and Imminent SAF Supply Squeeze 33:28

3M ago33:28

33:28

On this week's episode of the WTR Sustainable Investing Surveyor Podcast, Bruce Fleming, Chief Executive Officer of Montana Renewables, an unrestricted subsidiary of Calumet (NASDAQ ticker CLMT), joined Tim Gerdeman, Vice Chair & Co-Founder and Chief Marketing Officer of Water Tower Research, and Peter Gastreich, Energy and Sustainable Investing An…

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369: I See a Darkness—The Climate Movement Expects Deep Overshoot 42:19

3M ago42:19

42:19

I came back from New York Climate Week energized. I loved seeing everyone. But many of the conversations I had profoundly scared me. We're staring into the abyss of deep overshoot, and it's staring back into us. What would it mean for us to make peace with a world that doesn't decarbonize fast enough? That doesn't scale carbon removal before tippin…

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368: The World Will Be Saved by Beauty: Carbon Removal's Feature Film Debut, LEGION 44—w/ Leila Conners, filmmaker 48:31

3M ago48:31

48:31

We all want to make sure carbon removal works. But who is working to make it beautiful? And could creating beauty be one of the most important jobs in all of climate? Leila Conners is a filmmaker who has been making environmental films for decades, including legendary ones like The 11th Hour with Leonardo DiCaprio. Her latest opus is Legion 44, whi…

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Season 9: Episode 7 | Resilient New Orleans Innovation Challenge 27:32

3M ago27:32

27:32

Finance New Orleans' Housing Innovation Challenge, sponsored by Elemental Excelerator, & Ballard Spahr LLP, is designed to introduce new construction and climate technologies that will increase the supply of affordable and sustainable housing in New Orleans. The leaders of both organizations will engage in a fireside chat to announce the challenge …

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Leaders In Clean Tech #156: Andrew Gilligan – Fluence 51:34

3M ago51:34

51:34

Join David Hunt, host of the Leaders in Cleantech podcast, as he delves into the future of battery storage with Andrew Gilligan, Senior Director of Global Markets and Development at Fluence. In this episode, Andrew shares his journey from the solar industry to joining Fluence, insights about global storage markets, and the evolving supply chains re…

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🏖️ Summer Classics #3: Funniest Episode 😹 – Comedian Stuart Goldsmith 44:05

3M ago44:05

44:05

This August and September, I’m stepping away from the mic to volunteer — but I’m not leaving your podcast feed empty. Instead, I’m revisiting fan favourites in a short Summer Classics series. In this last episode of the series, I'm reviving my chat with comedian Stuart Goldsmith where we: 🛹 Quote the Simpsons a couple times 🏟️ Clarify it's differen…

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367: Is CDR Even Using "Bankability" Correctly?—w/ Ryan Covington, Attorney at Philip Lee LLP 54:00

3M ago54:00

54:00

Or "project finance", for that matter? Or are these just the current words we say at happy hours? Today, we attempt to nail down some of these definitions so we might have a chance of achieving either of these concepts. Ryan Covington is an attorney and partner in the Climate Projects team of Philip Lee (US) LLP, focused on the development and fina…

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I'm sailing from Seattle to San Francisco. Want to tag along? 9:15

3M ago9:15

9:15

Are you interested in sailing from Seattle to San Francisco on a sailing vessel older than World War 1?! Well, you can at the end of October 2025. Moreover, you'll be crewing alongside me. I recently joined the team of Maritime Blue as an Executive in Residence, working with ocean tech startups on commercial strategy, storytelling, and go-to-market…

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How to tackle big goals 47:18

3M ago47:18

47:18

In this, our 100th, episode we talk about our podcast journey and on what we see in the future. We then pivot to talking about our individual processes and practices for setting and achieving big goals. Some of the topics discussed in this episode of the Idea Roastery: Reflections on reaching 100 podcast episodes Goal-setting strategies and motivat…

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366: Raising Anti-Doomer Kids & Processing the Many Feelings of Climate Change—w/ Ariella Cook-Shonkoff, MFT; author of Raising Anti-Doomers 55:33

3M ago55:33

55:33

Raising kids is hard enough. How do we do it now when existential dread is such a major part of youth experience? And how do we keep ourselves mentally healthy enough to be good at both our professional climate work and parenting? Today's show is with Ariella Cook-Shonkoff, psychotherapist and author of the new book, Raising Anti-Doomers: How to Br…

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Joachim Lohse – Ampcontrol 48:17

4M ago48:17

48:17

In this episode of Leaders in Cleantech, I speak with Joachim Lohse, CEO and co-founder of Ampcontrol, about his journey from writing LinkedIn blog posts as a young consultant to founding one of Europe’s most innovative smart charging software companies. We discuss the technical and leadership challenges of scaling a company at the heart of the EV …

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Season 9: Episode 6 | Energy Innovation at Scale 40:07

4M ago40:07

40:07

This panel explores how major corporations, investors, and universities are embracing the creativity of technology startups to harness disruption and expand opportunities in a rapidly changing business environment. Through case studies and strategies, the discussion highlights how startup–corporate partnership models enable companies to stay agile …

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365: Is Climate Action "Quixotic"?: Don Quixote's Psychosis & the Misuses of Political Nostalgia 21:48

4M ago21:48

21:48

Is that a noble man rejecting modernity and embracing tradition? Or is it a lunatic with a lance trying to disembowel a shepherd? The Ingenious Gentleman Don Quixote of La Mancha by Miguel de Cervantes (Saavedra) is the much beloved literary classic—and perhaps the world's first true novel—but its reputation goes far beyond the book itself. The cha…

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Third spaces & social isolation 32:06

4M ago32:06

32:06

We discuss the evolution of traditional third spaces like pubs and the challenges of creating new ones in modern cities. We talk about the potential for individuals and communities to cultivate these vital social hubs to combat isolation. Some of the topics discussed in this episode of the Idea Roastery: - The definition and importance of third spa…

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🏖️ Summer Classics #2: Investor Favourite 📈 – Jessica Burley of Planet A 30:49

4M ago30:49

30:49

This August and September, I’m stepping away from the mic to volunteer — but I’m not leaving your podcast feed empty. Instead, I’m revisiting fan favourites in a short Summer Classics series. The second of three episodes in the series is my interview with Jessica Burley of Planet A. I call it the "Investor Favourite" because I've heard from lots of…

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364: Lowering the Onion into Hell: Strategic Realism vs. Christian Pacifism 42:29

4M ago42:29

42:29

In The Brothers Karamazov, the character Grushenka tells a story about an old peasant woman who never did a good deed in her entire life and went to Hell when she died. The woman's guardian angel petitioned God to let him search her life for a single good deed and if he found one, God would let her into Heaven. God agreed. It turns out she had once…

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Emmanuel (Manu) Masini – Mantle8 41:27

4M ago41:27

41:27

Hydrogen has for decades been talked about as the fuel of the future, the economics, among other things stand it’s way, producing cheap hydrogen isn’t easy, but what if nature has already done the hard work for us? In this episode of Leaders in Cleantech, I speak with Emmanuel Masini, founder and CEO of Mantle8, a pioneering natural hydrogen explor…

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363: Carbon Markets & The Art of Not Being Governed: Legibility vs. Complexity in James C. Scott—w/ Grant Faber 1:02:11

4M ago1:02:11

1:02:11

One of my biggest podcasting regrets is not having been able to interview the anthropologist Dr. James C. Scott before he died in 2024. We had corresponded by email, but he'll forever be one of the ones who got away... Rest in peace, James. Your scholarship is still making people think. Today's show serves as an introduction to anthropology, and to…

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Routines, rituals & results 38:23

4M ago38:23

38:23

We dive into productivity, routines, and goal-setting for indie developers. We explore the delicate balance between motivation and discipline and talk about strategies for maintaining focus and productivity while working solo. Some of the topics discussed in this episode of the Idea Roastery: - Balancing motivation and discipline in self-employment…

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#257 Betting on $2 Trillion in Climate Infrastructure & Lessons from the DOE Loan Programs Office | Brendan Bell (Aligned Climate Capital) 28:35

4M ago28:35

28:35

What does it take to scale the clean energy transition—both at the bleeding edge of new technology and in the nuts-and-bolts of infrastructure? Today’s episode dives into the nuanced world of climate finance and infrastructure with Brendan Bell, Chief Operating Officer and Partner at Aligned Climate Capital. Unlike most investors who play in either…

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362: Will Humanity Pass Through the Great Filter and Become a Permanent Civilization? 28:10

4M ago28:10

28:10

If there are so many inhabitable planets in the universe, why haven't we made contact with other civilizations? One terrifying answer is that very few civilizations are able to create world-altering technology without also killing themselves off in the process. This monologue episode introduces the concept of Great Filter Events through the work of…

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#256 Soil Health, Carbon Markets & Measuring the Hidden Climate Solution Beneath Our Feet | Chris Tolles (Yard Stick PBC) 56:25

4M ago56:25

56:25

How can we fight climate change by focusing underground? It turns out one of the biggest untapped climate solutions isn’t in the air—or in the trees, it’s in the soil beneath our feet. Today’s guest has developed a game-changing way to measure and protect soil organic carbon, helping farmers, agribusinesses, and carbon markets work together for cli…