Perovskite Solar Cells Explained: Less Land, Lower Costs, More Power
Send me a messageIn 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 hardwareHow tandem solar can reduce emissions by 20% or more, even compared to conventional solarWhat’s holding Europe back in solar manufacturing, despite strong deployment figuresWhy utilities, not just residential customers, are driving early demand for Oxford PV’s techLaura 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.comListen and subscribe at https://www.climateconfidentpodcast.comDigital Disruption with Geoff Nielson Discover how technology is reshaping our lives and livelihoods.Listen on: Apple Podcasts SpotifySupport the showPodcast supportersI'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.ContactIf 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. CreditsMusic 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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Decarbonising Planes Without Batteries or Hydrogen? For Now, Here’s How
Send me a messageIn 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 productionHow current SAF mandates and incentives (EU vs. US) shape supply and pricingWhy scaling SAF requires compatibility with existing refinery infrastructureThe role consumer awareness might play in driving airline demandAlexei 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 #podcastSupport the showPodcast supportersI'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.ContactIf 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. CreditsMusic 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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Why Solar Lanterns Are a Game-Changer for Climate and Humanitarian Aid
Send me a messageIn 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 safetyHow solar design can scale through beauty, durability, and functionThe unexpected link between solar tech and trauma recovery in childrenWhat business models can sustain social impact in climate techFor more, visit https://solight-design.com or head to climateconfidentpodcast.com.Digital Disruption with Geoff Nielson Discover how technology is reshaping our lives and livelihoods.Listen on: Apple Podcasts SpotifySupport the showPodcast supportersI'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.ContactIf 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. CreditsMusic 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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From Filing to Patent in 6 Months: The Untold Story of the USPTO’s Climate Program
Send me a messageIn 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 showPodcast supportersI'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.ContactIf 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. CreditsMusic 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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Grid Decarbonisation at Scale: Can a Whole Country Go Net Zero?
Send me a messageIn 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 storageThe urgent grid reform needed to meet the UK’s 2030 clean power targetsHow long-duration battery storage could replace gas peaker plants sooner than expectedThe overlooked challenge (and opportunity) of decarbonising the shipping industryWhy AI will be essential to balancing increasingly complex power gridsAnd why empowering communities is critical to speeding up the clean energy build-outJohn 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.Digital Disruption with Geoff Nielson Discover how technology is reshaping our lives and livelihoods.Listen on: Apple Podcasts SpotifySupport the showPodcast supportersI'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.ContactIf 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. CreditsMusic credits - Intro by Joseph McDade, and Outro music for this podcast was composed, played, and produced by my daughter Luna Juniper
Climate Confident is your go-to podcast for the latest in climate innovation and sustainable solutions. Hosted by Tom Raftery, this weekly series explores the cutting-edge strategies and success stories driving our global journey toward a cooler planet.Every Wednesday at 7 AM CET, Tom engages with senior industry executives, climate scientists, and sustainability pioneers to uncover actionable insights and transformative approaches to reducing emissions and revitalising our environment. Whether you're a business leader, policy maker, or simply passionate about climate action, Climate Confident provides the inspiration and knowledge you need to make a real difference.Subscribe now to stay informed, inspired, and ready to contribute to a sustainable future. Let's turn every episode into a step closer to a greener, more resilient world.
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