The SAF Podcast

SAF Investor

Welcome to The SAF Podcast, the only podcast on the internet that exclusively covers sustainable aviation fuel (SAF). So if you want to find out the real issues and challenges are for commercialising and scaling SAF production, look no further.Every week we will be hearing from senior industry leaders who are actively shaping the future of SAF and aviation.  Hosted by Oscar Henderson and brought to you by the team at SAF Investor. Connect with us at www.safinvestor.com

  1. 10 Jun

    Dan Sutton, Syntholene: Building on a volcano and betting on geothermal

    In this episode, we sit down with Dan Sutton, CEO and co-founder of Syntholene, to explore their geothermally integrated synthetic fuel production technology currently being developed in Iceland. Dan explains why geothermal energy is such a compelling foundation for eSAF production, how Syntholene's solid oxide electrolyzer cell (SOEC) technology — integrated with Iceland's abundant heat and electricity — creates a step-change in hydrogen cost reduction, and why the company believes it can achieve unit economics competitive with fossil fuels without relying on perpetual subsidies.  We also explore the independent feasibility study conducted by notable alternative fuels sceptic Robert Rapier, whose findings validated Syntholene's scientific fundamentals while identifying the integration and construction risks that Dan openly acknowledges — and explains how his team is managing them. The conversation broadens into project development philosophy, the replicability of the Iceland model in geothermally active regions globally and how you manage earthquake and volcano risk, Iceland's strikingly low-bureaucracy environment for infrastructure permitting, and a frank debate on whether European eSAF policy is addressing the real problem — or papering over a fundamental unit economics challenge. We close with Syntholene's unconventional but deliberate choice to go public on the TSX Venture Exchange — and why Dan believes building in public, with a diversified investor base, gives the company more control over its destiny than the traditional venture capital route.

    1 hr
  2. 3 Jun

    Mikala Grubb, Topsoe: The 100th episode and tech behind a third of the world's SAF

    For the 100th episode of The SAF Podcast, we're joined by Mikala Grubb, Senior Vice President of Technologies, Topsoe — one of the world's leading catalysis and technology companies, whose technology produces an estimated third of all the SAF available globally today. We start with feedstocks — why the constraints on used cooking oil and animal fats are tightening, what a post-2030 feedstock crunch could look like, and which next-generation feedstock options (from intermediate crops and municipal solid waste to tire-derived feedstocks) are genuinely gaining traction versus those still some way from commercial reality. We then turn to technology: how Topsoe's HydroFlex HEFA technology became the commercial backbone of today's SAF industry, the role co-processing can play as a pragmatic stepping stone, and why Mikala's advice to developers facing ASTM certification delays is simple — start with renewable diesel and switch when certified. We also explore the ESAF pathway, the importance of the Topsoe-DLR-Sasol demonstration plant currently under construction, and why Topsoe is ready to sign full commercial-scale ESAF contracts today. Throughout, a clear theme emerges: successful SAF projects are built on feedstock security, offtake certainty, the right partner ecosystem, and a willingness to be pragmatic.  Happy 100th, The SAF Podcast. Thank you to all the guests we have had over the last 100 episodes and to everyone that has listened!

    49 min
  3. 20 May

    Alasdair Lumsden, Carbon Neutral Fuels: Ctrl C, Ctrl V-ing future of eSAF

    In this episode, we sit down with Alasdair Lumsden, co-founder of Carbon Neutral Fuels, to explore how taking a screwdriver to a VCR led to his time in tech entrepreneurship, which eventually ended up in the world of sustainable aviation fuel.  Alasdair walks us through the company's Power-to-Liquid e-SAF project, Project Starling — a commercial-scale facility planned for Workington, Cumbria, targeting 25,000 tonnes per year of SAF by 2031. We dig into the nuts and bolts of CNF's technology stack — solid oxide electrolysis (with Topsoe), Fischer-Tropsch synthesis (Johnson Matthey's FT CANS process), and upgrading technology (Honeywell UOP) — and how CNF is integrating waste heat recovery to improve efficiency and unit economics.  Alasdair also explains the decision to skip the demo phase and go straight to commercial scale, why their CO2 sourcing strategy shifted from 100% direct air capture to a mix of biogenic sources, and how they secured a 2031 grid connection date by choosing Cumbria over more traditional industrial sites. On the commercial side, Alasdair discusses how CNF has raised over £11 million to date — including £7.4 million from the UK Advanced Fuels Fund across two rounds — and is now mid-way through a £24 million Series A, targeting patient capital and strategic investors.  We also cover offtake strategy, the Revenue Certainty Mechanism, the hydrogen policy disconnect, and why Alasdair sees the UK's DFT as a genuine competitive advantage for SAF developers looking to de-risk before expanding internationally.

    1 hr
  4. 7 May

    Shubhda Kaushik, Alternative Energy Company: Bankability and The Decisive Decade

    In this episode of The SAF Podcast, Oscar is joined by Shubhda Kaushik, managing director & chief executive officer, Alternative Energy Company, to explore what it really takes to move sustainable aviation fuel projects from ambition to final investment decision. Drawing on experience at Standard Chartered, Bain and McKinsey and Maersk, giving her a rounded perspective across finance, strategy and commercial practicality. Shubhda explains why capital for energy transition projects is not scarce, but selective — and why bankability must be built in from day zero. The conversation also dives into Shubhda’s new book, The Decisive Decade - 2026 Volume I: A Practitioner's Manual - What will it take to win on bankability in the next phase of energy transition. We explore the core bankability framework behind it: revenue certainty, infrastructure access, execution capability and risk allocation.  This is just volume I, so if you enjoyed this stay tuned for volume II for a check in on the energy transition's progress. This is a practical discussion for SAF producers, airlines, investors, lenders and anyone trying to understand why so many projects look promising on paper but struggle to reach financial close. This episode gives you a great introduction to what is explain at length in the book, which you can find here: https://www.amazon.co.uk/Decisive-Decade-Practitioners-bankability-transition/dp/B0GZHQR25T/ref=sr_1_1?crid=3MEKZBXCEA3ZB&dib=eyJ2IjoiMSJ9.ikEBk10suF88vWdw1KH_CcBNnz9j6PniHNHHDWsie_fENicXTm3b2WClyMPMQ4pLvgKL6EJah0NMTppyB8GMRvqW_nJ3SG99vgYueNEUz1I.rZjcjiPvwirmc57l23MD1XG5HYaUI2osS2EXQErFT6I&dib_tag=se&keywords=the+decisive+decade&qid=1778142508&sprefix=the+decisive+decad%2Caps%2C293&sr=8-1

    45 min
  5. 15 Apr

    Noaman Al Adhami, Alfanar Projects: Lighting the way for 2G SAF

    Noaman Al Adhami, UK Country Head at Alfanar Projects, is this week's guest on The SAF Podcast.  He joins Oscar for a discussion into Lighthouse Green Fuels — one of the UK’s most closely watched sustainable aviation fuel (SAF) projects. We begin by looking at why Alfanar chose to initially focus SAF production in the UK and the decisions around site selection. We then explore what it takes to develop a second-generation SAF project at scale, including the gasification and FT-SPK pathway, feedstock selection, carbon capture, project financing, and the role of the UK SAF mandate in creating the right conditions for investment.  Noaman also explains why Alfanar is starting with biomass and agricultural residues, how the project could evolve towards more challenging waste feedstocks, the ongoing Carbon Capture application they have recently submitted and how the project has been financed to this point and future plans for financing project construction. If you want to understand the real-world challenges of scaling advanced SAF production in the UK, this is an episode you won’t want to miss. There is still time to submit your applications for the SAF Investor Deal of the Year Awards, we would love to hear from you about any financing deals that have taken place over the past year, your application can be submitted here: https://docs.google.com/forms/d/e/1FAIpQLScwrzV8VN8oqA6c-e0GMlgZmttTQ-U-1D9XxnOgeeQV-ITeiQ/viewform?usp=header

    54 min

Ratings & Reviews

3.8
out of 5
4 Ratings

About

Welcome to The SAF Podcast, the only podcast on the internet that exclusively covers sustainable aviation fuel (SAF). So if you want to find out the real issues and challenges are for commercialising and scaling SAF production, look no further.Every week we will be hearing from senior industry leaders who are actively shaping the future of SAF and aviation.  Hosted by Oscar Henderson and brought to you by the team at SAF Investor. Connect with us at www.safinvestor.com

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