Climate Confident

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AI may be booming, but the real bottleneck to it's growth may be turbines. And if firm power can’t scale fast enough, parts of the energy transition hit a wall.
In this episode, I’m joined by Brad Hartwig, Co-founder and CEO of Arbor Energy, to unpack a part of the climate tech and energy transition story that gets far too little attention: the physical machinery needed to deliver reliable, round-the-clock power. Arbor is developing modular supercritical CO2 turbines with integrated carbon capture, aimed at tackling one of the hardest problems in decarbonisation: how to provide firm, scalable electricity while still driving emissions reduction and keeping net zero in view.
We dig into why turbine shortages are becoming a serious constraint on hyperscale data centres, utilities, and industrial electrification, and you’ll hear why Brad believes this is now a critical choke point for both AI infrastructure and climate progress. You might be surprised to learn how stretched the traditional turbine supply chain has become, and why legacy manufacturers may be structurally mismatched to meet the moment.
We also get into oxy-combustion, methane leakage, biomass, carbon sequestration, long-duration storage, and the awkward reality that wind, solar, batteries, and grid expansion, while essential, may still leave gaps when it comes to firm power. This is a grounded conversation about climate tech, policy, energy transition strategy, and what serious infrastructure thinking looks like when the easy slogans run out.
🎙️ Listen now to hear how Brad Hartwig and Arbor Energy are rethinking firm power for a faster, tougher, more honest climate transition.
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Podcast subscribers
I'd like to sincerely thank this podcast's amazing subscribers:
Anita Krajnc
Cecilia Skarupa
Ben Gross
Jerry Sweeney
Andreas Werner
Stephen Carroll
Roger Arnold
And remember you too can Subscribe to the Podcast  - it is really easy and hugely important as it will enable me to continue to create more excellent Climate Confident episodes like this one, as well as give you access to the entire back catalog of Climate Confident episodes.

Contact
If you have any comments/suggestions or questions for the podcast - get in touch via direct message on LinkedIn. 
If you liked this show, please don't forget to rate and/or review it. It makes a big difference to help new people discover the show.

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What if one of the biggest climate problems in our buildings isn’t power generation, but the fact we’re still burning fuel in the basement?
In this episode, I’m joined by Dan Yates, CEO of Dandelion Energy, to unpack why geothermal may be one of the most overlooked tools in climate tech today, and why building decarbonisation deserves far more attention in the wider energy transition debate. If we’re serious about net zero and real emissions reduction, we need to stop treating heating as a side issue. 
Dan lays out a blunt truth: heating and cooling account for the vast majority of emissions from buildings, yet much of the conversation still fixates on EVs, solar, and batteries. You’ll hear why some forms of electrification can create a nasty unintended consequence by driving winter peak demand through the roof, and why geothermal flips that logic on its head. We dig into how ground-source systems can cut energy use, slash peak load, and potentially reduce the need for expensive new grid infrastructure. 
You might be shocked to learn that this isn’t just an HVAC story. It’s a grid story. A policy story. A housing story. We also get into cost, leasing, incentives, data, and why Dan believes geothermal should be seen as distributed infrastructure hiding in plain sight. If you want a clearer view of what practical climate action looks like beyond the usual talking points, this one’s worth your time. 
🎙️ Listen now to hear how Dan Yates and Dandelion Energy are pushing a smarter, more strategic path to decarbonisation.
Support the show
Podcast subscribers
I'd like to sincerely thank this podcast's amazing subscribers:
Anita Krajnc
Cecilia Skarupa
Ben Gross
Jerry Sweeney
Andreas Werner
Stephen Carroll
Roger Arnold
And remember you too can Subscribe to the Podcast  - it is really easy and hugely important as it will enable me to continue to create more excellent Climate Confident episodes like this one, as well as give you access to the entire back catalog of Climate Confident episodes.

Contact
If you have any comments/suggestions or questions for the podcast - get in touch via direct message on LinkedIn. 
If you liked this show, please don't forget to rate and/or review it. It makes a big difference to help new people discover the show.

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What if the real barrier to climate action isn’t a lack of science, but a lack of pressure? And what happens when climate risk collides with political instability, fossil fuel dependence, and public anger in real time?
In this episode, I’m joined by Professor Dana Fisher of American University, author of Saving Ourselves and one of the sharpest thinkers on climate activism, policy, and public mobilisation. We get into what she calls apocalyptic optimism: being brutally honest about the scale of the climate crisis, the democratic backsliding around it, and the need to act anyway. Because the stakes now are painfully clear. Emissions are still rising, climate impacts are becoming impossible to ignore, and the push for decarbonisation is being slowed by vested interests just as the cost of delay keeps rising.
You’ll hear why Dana argues that science is necessary but insufficient for decision-making, and why public pressure is so often the real driver of climate policy, decarbonisation, and net zero progress. We dig into how repression can backfire, why climate shocks can shift public opinion, and why attempts to slow climate action may end up intensifying the response instead.
We also explore why this conversation feels especially urgent now. As conflict, energy insecurity, and policy disruption expose the fragility of fossil fuel dependence, the case for clean energy starts to look less like idealism and more like common sense. From balcony solar to broader questions of power, protest, and public pressure, this episode looks at why the energy transition is about far more than technology. It’s about resilience, accountability, and who gets heard when the system is under strain.
Dana's newsletter is at: https://danarfisher.com/apocalyptic-optimist/
And you can find her TED talk at: https://go.ted.com/danarfisher 
🎙️ Listen now to hear how Dana Fisher reframes climate action, public pressure, and the real forces that move decarbonisation forward.
Support the show
Podcast subscribers
I'd like to sincerely thank this podcast's amazing subscribers:
Anita Krajnc
Cecilia Skarupa
Ben Gross
Jerry Sweeney
Andreas Werner
Stephen Carroll
Roger Arnold
And remember you too can Subscribe to the Podcast  - it is really easy and hugely important as it will enable me to continue to create more excellent Climate Confident episodes like this one, as well as give you access to the entire back catalog of Climate Confident episodes.

Contact
If you have any comments/suggestions or questions for the podcast - get in touch via direct message on LinkedIn. 
If you liked this show, please don't forget to rate and/or review it. It makes a big difference to help new people discover the show.

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What if the biggest climate lever in fashion isn’t better materials, but simply wearing clothes longer?
The fashion industry accounts for roughly 10% of global carbon emissions and 20% of industrial water pollution. In this episode of Climate Confident, I’m joined by Phoebe Tan, co-founder of Taelor, a menswear rental subscription service using AI-driven styling and real-world garment data to rethink how we consume clothing. The challenge isn’t just fabric choice. It’s overproduction, underutilisation, and a system optimised for churn instead of longevity.
We dig into how rental models can increase garment utilisation and reduce emissions by extending lifecycle wear. You’ll hear why durability data, wear rates, damage rates, wash cycles, may be more powerful than sustainability marketing. Phoebe explains how Taelor feeds performance insights back to brands, effectively becoming a live testing lab for quality and circularity. And we explore a hard truth: convenience often drives behaviour change faster than climate messaging ever will.
If net zero requires rethinking consumption systems, fashion is a revealing case study. This isn’t about trends. It’s about utilisation density, supply chain feedback loops, and whether circular fashion can scale beyond a niche audience.
🎙️ Listen now to hear how Phoebe Tan and Taelor are challenging overproduction and pushing practical decarbonisation in climate tech and the energy transition.
Support the show
Podcast subscribers
I'd like to sincerely thank this podcast's amazing subscribers:
Anita Krajnc
Cecilia Skarupa
Ben Gross
Jerry Sweeney
Andreas Werner
Stephen Carroll
Roger Arnold
And remember you too can Subscribe to the Podcast  - it is really easy and hugely important as it will enable me to continue to create more excellent Climate Confident episodes like this one, as well as give you access to the entire back catalog of Climate Confident episodes.

Contact
If you have any comments/suggestions or questions for the podcast - get in touch via direct message on LinkedIn. 
If you liked this show, please don't forget to rate and/or review it. It makes a big difference to help new people discover the show.

Send me a message
Coal produces 4,000–8,000x more waste per MWh than wind.
But you can’t take a photo of CO₂, so we ignore it.
In this episode, I’m joined by climate futurist and long-term decarbonisation modeller Michael Barnard. We cut through headlines to examine where the energy transition is actually heading - from electrification and maritime shipping to mass timber, industrial relocation, and grid efficiency. The stakes? Whether we build a cheaper, cleaner energy system, or cling to fossil-era assumptions.
You’ll hear why electrifying everything could cut primary energy demand by up to half.
We dig into how 40% of global shipping may simply disappear as fossil fuel trade declines.
And you might be shocked to learn why solar panels and wind turbines create thousands of times less waste per MWh than coal, yet attract far more outrage.
We also explore how cheap renewables are reshaping industrial geography, why Spain’s sunshine could outcompete former gas hubs, and how making electricity cheaper than fossil fuels changes everything.
Interestingly, Seville’s iconic wooden “Setas” isn’t just architecture, it’s proof that mass timber can replace steel and concrete at scale, locking carbon into buildings instead of the atmosphere.
This is climate tech grounded in physics, economics, and human behaviour, not hype.
🎙️ Listen now to hear how Michael Barnard reframes decarbonisation, net zero, and the real trajectory of the energy transition.
Support the show
Podcast subscribers
I'd like to sincerely thank this podcast's amazing subscribers:
Anita Krajnc
Cecilia Skarupa
Ben Gross
Jerry Sweeney
Andreas Werner
Stephen Carroll
Roger Arnold
And remember you too can Subscribe to the Podcast  - it is really easy and hugely important as it will enable me to continue to create more excellent Climate Confident episodes like this one, as well as give you access to the entire back catalog of Climate Confident episodes.

Contact
If you have any comments/suggestions or questions for the podcast - get in touch via direct message on LinkedIn. 
If you liked this show, please don't forget to rate and/or review it. It makes a big difference to help new people discover the show.