May 16, 2024 · 29m · catalyst
Understanding SAF buyers
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gold bands on the timeline = statements, start to end. Hover to read, click to jump. CC turns on captions
In this episode of Catalyst, host Shayle Kann and Delta Air Lines CSO Amelia DeLuca explore how major airline buyers navigate sustainable aviation fuel procurement, finance green premiums through corporate Scope 3 partnerships, and build regional supply ecosystems.
How this conversation actually went
Every chapter scored 0–10 on four independent dynamics. Hover any point for the reasoning behind the score. Shayle holds 33% of the talking time here. How this is scored →
Shayle as informed peer 5.6 Guest teaching 4.1 Guest disagreement 1.6 Shayle pushing back 2.4
speaking balance: gold is Shayle, purple is the guest (3 minute bins)
Sharpest disagreement ▶ 22:35 Critique of European blending mandates
Amelia directly criticizes European policy, arguing that imposing mandates before supply scales artificially forces non-consumer-friendly pricing into the market.
Hardest push from Shayle ▶ 24:32 Challenging synthetic fuel economics vs carbon removalShayle challenges the fundamental premise of synthetic PtL aviation fuel, questioning why airlines would make complex synthetic fuels rather than simply buying cheaper carbon removal credits.
Biggest teaching moment ▶ 4:49 The stark reality of airline fuel scaleAmelia contextualizes procurement scale by contrasting Delta's 4 billion gallon annual jet fuel consumption against the industry's maximum available SAF supply of just 3.5 million gallons.
Shayle holds their own ▶ 24:32 Deep technical breakdown of PtL lifecycle economicsShayle demonstrates deep market expertise by laying out the exact hydrogen and carbon capture cost steps of power-to-liquids versus pure sequestration.
the scores for every segment, with the reasoning behind each
| Chapter | Topic | Shayle as informed peer | Guest teaching | Guest disagreement | Shayle pushing back | Why |
|---|---|---|---|---|---|---|
| Delta's SAF Procurement Milestones and Market Realities | 5 | 4 | 1 | 2 | Shayle pushes for concrete procurement numbers to put Delta's progress into perspective. Amelia transparently shares the stark contrast between Delta's 4 billion gallon annual fuel use and their 3.5 million gallons of SAF. | |
| Corporate Scope 3 Demand and the Pass-Through Model | 6 | 3 | 2 | 3 | Shayle frames Delta's SAF business model as essentially a zero-cost pass-through broker for corporate Scope 3 buyers. Amelia gently refines this, emphasizing broader strategic enterprise ecosystems over purely transactional relationships. | |
| Overcoming Bottlenecks: The Minnesota SAF Hub | 5 | 5 | 1 | 1 | Amelia explains why direct airline-startup bilateral contracts stalled SAF financing and introduces the Minnesota SAF Hub's three-horizon regional ecosystem strategy. | |
| Ethanol Integrity, Lifecycle Modeling, and Regional Diversity | 6 | 4 | 2 | 3 | Shayle probes the contentious carbon accounting of ethanol and asks whether Delta accepts any marginal emission improvement. Amelia clarifies the 50% statutory reduction floor and rigorous lifecycle assessment standards. | |
| Mid-Roll Sponsor Messages: Bloom Energy and ENGIE | 5 | 4 | 1 | 2 | Following the mid-roll ad read, Shayle investigates the limits of corporate willingness to absorb the green premium. Amelia outlines the four structural levers required to bring production costs down. | |
| Policy Approaches: European Blending Mandates vs. US Incentives | 5 | 5 | 2 | 2 | Shayle drills into ReFuelEU regulatory requirements, prompting Amelia to explain producer blending obligations and critique European mandates for running ahead of actual physical supply. | |
| Technical Blend Limits and Centralized Infrastructure Hubs | 7 | 4 | 2 | 4 | Shayle questions the thermodynamic and economic efficiency of PtL fuels compared to continuing fossil jet fuel combined with direct air capture and sequestration. Amelia counters by citing greenhouse gas insetting rules and fuel price volatility insulation. |
Statements from this episode (14)
Delta buys 4B gallons of fuel yearly, securing only 3.5M of SAF
“Delta as a company procures four billion gallons of jet fuel every year. Last year we used roughly three and a half million gallons of SAF, and that's not for wanting more. That's all we could get our hands on.”
Buyers exist for Scope 3 emissions of every drop of Delta's SAF
“We've got a buyer for the scope three emissions for every single drop that we have, and there's way more demand for that than we can even get our hands on”
Delta CSO: Aviation must scale SAF faster than wind or solar did
“We've got to outpace Some of those other emergent industries in terms of we don't have decades to get this right. It needs to scale sooner rather than later.”
DeLuca: Bilateral airline contracts failed to finance SAF projects
“You had an airline and a startup, and that wasn't working. They weren't getting financing. We can send all the demand signals we want, but still, you know, the way that, you know, essentially the Contracts were written that SAF supplier just wasn't getting the…”
DeLuca: Full SAF scalability requires power-to-liquid synthetic fuels
“If you really look at full scalability for that four billion gallons of jet fuel, we have to look even further into the future into power to liquid or synthetic fuels, which really need that access to renewable energy. To essentially, you know, cut the water i…”
DeLuca: HEFA feedstocks cannot scale to Delta's 4B gallon fuel demand
“So all those feedstocks I mentioned, I mean, there's a limitation. They can't be scaled to the four billion gallons of jet fuel that Delta uses, let alone what the industry uses.”
DeLuca: SAF policy incentives require at least a 50% lifecycle emissions reduction
“So one, in terms of the way incentives are written, you have to hit a 50% threshold. So it's not just a little bit. It's got to hit that 50% threshold.”
Delta Plans for 15M+ Gallons of SAF in California Over Two Years
“We are actively planning for fifteen million gallons plus in California over the next two years, and the reason I'm starting with California is just mentioning that's where the incentives are to date.”
DeLuca: Scaling Alcohol-to-Jet and PtL Will Lower SAF Green Premiums
“Hefa, Hefa has a hard time of bringing that green premium down dramatically because you're kind of constrained by the used cooking oil constraint. And so, you know, there isn't much more to walk down, but as you get into alcohol to jet and PTL, scalability wil…”
Delta: European SAF mandate is ahead of supply and unfriendly to consumers
“Sometimes a mandate, and in this case, this is our position, that, you know, it's just a couple years ahead of where the supply is, and so it's forcing it into the market at a price point that is not We don't think it's consumer friendly.”
DeLuca: SAF Has a 50% Maximum Blend Limit Today
“The first is the fact that there is a maximum blend limit of 50% today, and that's just because the chemistry of SAF is slightly different than conventional jet fuel, and if you've got it at a hundred percent, there are some things in the infrastructure themse…”
The 50% SAF blend limit won't constrain airports for a decade
“So the industry is certainly looking at that, but I think we're probably at least a decade away from having that be a real issue in any single location.”
DeLuca: Delta Is Pushing for Centralized SAF Blending Hubs in Key Markets
“And so we are really pushing to see blending hubs in some key markets, such as Minnesota. So that we've got just one place where all staff producers are able to blend in their staff, and then all airlines will be able to access.”