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In this episode of the Climate Confident podcast, I spoke with Laura Miranda Perez, Chief Communications & Sustainability Officer at Oxford PV, about one of the most important developments in solar tech today: perovskite-silicon tandem solar cells.

We unpacked how Oxford PV’s approach improves solar panel efficiency from the typical 20–22% to over 30%, and why that matters not just for land use, but also for grid capacity, system costs, and the speed of global decarbonisation. Laura also explained how tandem cells work, why silicon has hit a performance ceiling, and how perovskite offers a new path forward.

We dug into the real-world implications:

• Why higher efficiency panels lower the cost of electricity, not just hardware
• How tandem solar can reduce emissions by 20% or more, even compared to conventional solar
• What’s holding Europe back in solar manufacturing, despite strong deployment figures
• Why utilities, not just residential customers, are driving early demand for Oxford PV’s tech

Laura also addressed common misconceptions about solar, including whether it works in cloudy weather and the overblown concerns about solar panel waste.

If you’re working in clean energy, manufacturing, or just curious about where solar is headed, this is a must-listen conversation.

🔗 More on Oxford PV: https://www.oxfordpv.com

Listen and subscribe at https://www.climateconfidentpodcast.com

Listen on: Apple Podcasts Spotify

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Podcast supporters
I'd like to sincerely thank this podcast's amazing supporters:

• Lorcan Sheehan
• Jerry Sweeney
• Andreas Werner
• Stephen Carroll
• Roger Arnold

And remember you too can Support 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.

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If you have any comments/suggestions or questions for the podcast - get in touch via direct message on Twitter/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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Music credits - Intro by Joseph McDade, and Outro music for this podcast was composed, played, and produced by my daughter Luna Juniper

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In this episode of the Climate Confident podcast, I speak with Alexei Beltyukov, co-founder of Universal Fuel Technologies, about a new approach to producing Sustainable Aviation Fuel (SAF), using a process they call flexiforming.

Unlike traditional methods like HEFA or Fischer–Tropsch, flexiforming allows producers to use a much wider range of feedstocks, from mixed alcohols to naphtas and renewable waste streams, and turn them into jet fuel, renewable diesel, or chemicals. This flexibility is critical as SAF demand surges, especially with EU mandates requiring a rising share of SAF in jet fuel starting in 2025.

We explore:

• Why SAF is the only viable decarbonisation path for long-haul aviation (for now)
• What sets flexiforming apart from conventional SAF production
• How current SAF mandates and incentives (EU vs. US) shape supply and pricing
• Why scaling SAF requires compatibility with existing refinery infrastructure
• The role consumer awareness might play in driving airline demand

Alexei also makes the case for slow but steady growth in SAF adoption, pointing to its current double-digit annual growth and comparing its trajectory to that of electric vehicles 10 years ago.

If you're working in energy, fuels, aviation, or sustainability policy, or you’re just trying to understand how we decarbonise one of the hardest-to-abate sectors, this episode offers a clear, grounded perspective.

🔗 Listen now and learn more at climateconfidentpodcast.com

#sustainableaviationfuel #SAF #decarbonisation #aviation #cleantech #climatechange #renewablefuels #energytransition #climateconfident #podcast

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Podcast supporters
I'd like to sincerely thank this podcast's amazing supporters:

• Lorcan Sheehan
• Jerry Sweeney
• Andreas Werner
• Stephen Carroll
• Roger Arnold

And remember you too can Support 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.

Contact
If you have any comments/suggestions or questions for the podcast - get in touch via direct message on Twitter/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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Music credits - Intro by Joseph McDade, and Outro music for this podcast was composed, played, and produced by my daughter Luna Juniper

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In this episode of Climate Confident, I speak with Alice Chun, inventor of the world’s first inflatable, origami-inspired solar light and founder of Solight Design. Alice shares how a career in material technology and a deeply personal experience with her son’s asthma led her to tackle energy poverty, disaster relief, and carbon emissions with a single, deceptively simple product: the SolarPuff™.

We discuss the staggering health and environmental toll of kerosene lighting, especially in off-grid and disaster-affected communities — and how collapsible, durable solar lanterns are not only cleaner and safer, but can also act as tools for education, safety, and psychological recovery.

Alice walks us through the practical design choices (like sailcloth and origami folds) that make the lights lightweight, shippable, and long-lasting. She also unpacks her field experiences from Haiti to Ukraine, why she insists on personally delivering lights, and the complex balance of running a mission-driven company that also needs to survive commercially.

Key takeaways:

• Why light access is essential for disaster resilience and safety
• How solar design can scale through beauty, durability, and function
• The unexpected link between solar tech and trauma recovery in children
• What business models can sustain social impact in climate tech

For more, visit https://solight-design.com or head to climateconfidentpodcast.com.

Listen on: Apple Podcasts Spotify

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Podcast supporters
I'd like to sincerely thank this podcast's amazing supporters:

• Lorcan Sheehan
• Jerry Sweeney
• Andreas Werner
• Stephen Carroll
• Roger Arnold

And remember you too can Support 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.

Contact
If you have any comments/suggestions or questions for the podcast - get in touch via direct message on Twitter/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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Music credits - Intro by Joseph McDade, and Outro music for this podcast was composed, played, and produced by my daughter Luna Juniper

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In this episode of the Climate Confident podcast, I spoke with Ryan Schermerhorn, a US-based patent attorney who’s been helping clean tech innovators navigate the IP maze - until recently with the help of a now-suspended fast-track programme.

We discussed the United States Patent and Trademark Office’s (USPTO) Climate Change Mitigation Pilot Program, which allowed inventors of emissions-reducing technologies to get patents approved in months rather than years, at no cost. Ryan explained how it worked, why it was a big deal for clean tech startups, and how it quietly disappeared earlier this year following a political shift.

We also unpacked what this means for innovators now. Ryan shared practical alternatives - like using international patent offices with similar climate fast-track schemes and leveraging the Patent Prosecution Highway (PPH) to speed things up globally.

We also covered the balance between IP protection and open innovation, why patents still matter in the climate crisis, and how to protect ideas early without blowing the budget.

If you're working in climate tech, clean energy, or emissions monitoring and need to protect or scale your innovation, this episode is for you.

Support the show

Podcast supporters
I'd like to sincerely thank this podcast's amazing supporters:

• Lorcan Sheehan
• Jerry Sweeney
• Andreas Werner
• Stephen Carroll
• Roger Arnold

And remember you too can Support 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.

Contact
If you have any comments/suggestions or questions for the podcast - get in touch via direct message on Twitter/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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Music credits - Intro by Joseph McDade, and Outro music for this podcast was composed, played, and produced by my daughter Luna Juniper

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In this episode of the Climate Confident podcast, I sat down with John Sturman, Managing Director at NatPower UK, to dig deep into the realities of grid decarbonisation and energy transition at nation scale.

John pulled back the curtain on how NatPower is scaling up battery storage and renewable projects not just in the UK, but across the globe. From developing Europe’s largest battery storage pipeline to pioneering power solutions for maritime decarbonisation, this conversation gets into the detail of what's needed to hit net zero — and what’s holding us back.

We discussed:

• Why the UK is currently one of the strongest global markets for battery storage
• The urgent grid reform needed to meet the UK’s 2030 clean power targets
• How long-duration battery storage could replace gas peaker plants sooner than expected
• The overlooked challenge (and opportunity) of decarbonising the shipping industry
• Why AI will be essential to balancing increasingly complex power grids
• And why empowering communities is critical to speeding up the clean energy build-out

John didn’t shy away from naming the bottlenecks — planning delays, outdated infrastructure, and regulatory barriers — but he also laid out practical fixes that could unlock faster deployment of clean power.

If you’re serious about understanding the mechanics behind the transition to a net zero grid, this is one you don’t want to miss.

Listen now and get climate confident.

Listen on: Apple Podcasts Spotify

Support the show

Podcast supporters
I'd like to sincerely thank this podcast's amazing supporters:

• Lorcan Sheehan
• Jerry Sweeney
• Andreas Werner
• Stephen Carroll
• Roger Arnold

And remember you too can Support 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.

Contact
If you have any comments/suggestions or questions for the podcast - get in touch via direct message on Twitter/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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Music credits - Intro by Joseph McDade, and Outro music for this podcast was composed, played, and produced by my daughter Luna Juniper

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In this episode of the Climate Confident podcast, I sat down with Faustine Delasalle, CEO of the Mission Possible Partnership (MPP), to delve into the real challenges, and opportunities, of decarbonising heavy industry and transport.

Faustine and I explored the current state of industrial decarbonisation, including the progress made over the last five to six years in proving that sectors like steel, cement, and shipping can transition to low-carbon alternatives. But as she points out, technical feasibility doesn’t always translate into financial viability. The sticking point? Making green industrial projects bankable.

We discussed the role of the so-called "green premium" (or dirty discount), why demand signals are crucial, and how the current lack of buyers at scale is stalling momentum. Faustine makes a strong case for the combination of policy mandates and targeted subsidies to unlock investment - drawing comparisons with the growth trajectories of solar and electric vehicles.

A key takeaway from our chat: the path to scaling green hydrogen could start with ammonia, which Faustine sees as the first domino in the next industrial revolution. We also looked at which regions are moving fastest, what’s holding others back, and why emerging economies might play a central role in the coming decade.

If you're in policymaking, finance, or industry, and serious about accelerating climate action, this is one to tune into.

Listen and follow Climate Confident wherever you get your podcasts.

Support the show

Podcast supporters
I'd like to sincerely thank this podcast's amazing supporters:

• Lorcan Sheehan
• Jerry Sweeney
• Andreas Werner
• Stephen Carroll
• Roger Arnold

And remember you too can Support 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.

Contact
If you have any comments/suggestions or questions for the podcast - get in touch via direct message on Twitter/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.

Credits
Music credits - Intro by Joseph McDade, and Outro music for this podcast was composed, played, and produced by my daughter Luna Juniper

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In this episode of the Climate Confident podcast, I had the pleasure of speaking with Sandhya Sabapathy, Global Head of Environment and Net Zero at Entain, about the evolving role of sustainability in business – and what it truly takes to make climate action effective, strategic, and inclusive.

We discussed how sustainability has moved from the sidelines to the boardroom, driven not only by regulation but by clear commercial logic. Sandhya pointed to examples like IKEA – reducing emissions by 24% while growing revenue by 30% – as proof that climate strategy and profitability can go hand in hand.

We explored the growing influence of mandatory ESG reporting, the shift of climate accountability to audit committees, and how these trends are forcing businesses to be more transparent, not just more ambitious.

Sandhya also reflected on how to avoid burnout in purpose-driven work, why inclusivity leads to more resilient climate solutions, and the critical need to include marginalised voices in the climate conversation.

Listen in to hear why manufacturing might be further ahead on sustainability than you’d think, what we can learn from companies like Philip Morris (yes, really), and how even small actions can build corporate momentum for meaningful change.

Whether you’re leading a sustainability team, looking to influence from within, or just starting your climate journey – there’s something here for you.

🎧 Tune in now to learn, question, and push the dial forward.

#ClimateAction #SustainabilityLeadership #ESG #NetZero #CorporateSustainability #ClimateConfidentPodcast

Listen on: Apple Podcasts Spotify

Support the show

Podcast supporters
I'd like to sincerely thank this podcast's amazing supporters:

• Lorcan Sheehan
• Jerry Sweeney
• Andreas Werner
• Stephen Carroll
• Roger Arnold

And remember you too can Support 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.

Contact
If you have any comments/suggestions or questions for the podcast - get in touch via direct message on Twitter/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.

Credits
Music credits - Intro by Joseph McDade, and Outro music for this podcast was composed, played, and produced by my daughter Luna Juniper

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In this episode of Climate Confident, I sit down with Chris Doherty, CEO of Joulen, to discuss how data, AI, and battery storage are changing the way homes and businesses interact with renewable energy. With energy costs fluctuating and grid constraints becoming more of a challenge, the role of smart energy management has never been more important.

Chris explains how virtual power plants (VPPs) allow households and small businesses to collectively act as a large-scale power provider, reducing costs and generating income. We explore how AI-driven algorithms optimise energy use, ensuring that people buy low and sell high—maximising savings and revenue.

We also break down the regulatory barriers that prevent wider adoption of decentralised energy and discuss what governments can do to speed up the transition. From Germany’s success in residential battery storage to the UK’s evolving energy market, we look at how different countries are tackling these challenges.

Other key topics:

• Why EVs with vehicle-to-grid (V2G) technology could replace home batteries
• How energy storage can help stabilise the grid and reduce investment in new infrastructure
• The financial incentives needed to scale solar and battery adoption in homes and businesses
• The growing role of demand-side management in balancing electricity supply

If you’re wondering how to make the most of your renewable energy system—or how policy can unlock wider adoption—this episode has you covered.

📩 Get in touch: tomraftery@outlook.com
💡 Follow for more insights on the clean energy transition.

Support the show

Podcast supporters
I'd like to sincerely thank this podcast's amazing supporters:

• Lorcan Sheehan
• Jerry Sweeney
• Andreas Werner
• Stephen Carroll
• Roger Arnold

And remember you too can Support 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.

Contact
If you have any comments/suggestions or questions for the podcast - get in touch via direct message on Twitter/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.

Credits
Music credits - Intro by Joseph McDade, and Outro music for this podcast was composed, played, and produced by my daughter Luna Juniper