The SAF investment case just got stronger — here's why

Record fuel prices and accelerating mandates are converging to make sustainable aviation fuel production one of the most compelling capital allocation decisions in the energy transition right now.

In early March 2026, the spot price for sustainable aviation fuel (SAF) in Northwest Europe hit $2,640 per metric ton — a 29% jump in a single month. In Asia, FOB Singapore jet fuel reached an all-time high of $231.42 per barrel, smashing the previous record set during the 2022 energy crisis by more than 33%. For project developers and investors evaluating SAF production capacity, these are not abstract headlines. They translate directly into margin.

But price spikes come and go. The more durable question is whether the SAF investment case holds when energy markets calm. The answer, increasingly, is yes — and for structural reasons that go well beyond the current volatility.

Why margins are at record highs right now

The immediate driver of the current price surge is geopolitical: the de facto closure of the Strait of Hormuz has severely restricted conventional jet fuel supply, sending fossil-linked benchmark prices sharply higher. Because SAF is priced at a premium to these conventional benchmarks, outright SAF prices have followed — even as the bio-premium itself has compressed. This dynamic has made SAF production unusually profitable for well-positioned producers.

According to S&P Global market data from March 2026, the cost of producing SAF from used cooking oil (UCO) in North Asia has remained relatively stable (down 2% on the month), while the SAF CIF ARA market price rose nearly 29%. That gap — between stable production costs and surging market prices — is what drives the profitability that makes new capacity easier to justify.

Yet it would be a mistake to base an investment decision on current spot conditions alone. Geopolitical tensions ease. Oil prices fluctuate. Any credible business case for a SAF plant must rest on a more durable foundation.

The structural case: mandates, not just markets

The more compelling argument for SAF investment is regulatory. Governments across the globe are locking in SAF demand through binding blending mandates — a fundamentally different signal than commodity price movements.

The EU's ReFuelEU Aviation regulation already mandates 2% SAF blending in 2025, scaling to 70% by 2050. South Korea is implementing a 1% SAF blending requirement for international flights starting in 2027. Japan is targeting a 10% domestic SAF blend by 2030. Taiwan's state-owned CPC Corporation has launched 2.5% SAF trial production. Brazil is finalizing its SAF regulation for later in 2026, ahead of a 2027 mandate.

These are not aspirational targets — they are compliance obligations. Airlines that miss them face economic penalties. This creates a floor of demand that is largely independent of the spot price of fossil jet fuel.

There is also a structural asymmetry between SAF and its renewable fuel counterpart, hydrotreated vegetable oil (HVO). Renewable diesel competes with conventional diesel, a market that faces gradual volume erosion as the vehicle fleet electrifies. Aviation is different: global air traffic continues to grow, and electrification of long-haul aircraft is not a realistic near-term scenario. SAF demand is therefore set to grow both in absolute terms and as a percentage of total jet fuel consumed.

Feedstock availability is reshaping where production gets built

One of the most significant shifts currently underway in the SAF market is the geographic relocation of production capacity. Historically, the dominant model was feedstock-rich regions in Southeast Asia and China exporting raw materials to large European refiners like Neste for processing. That model is changing.

Both China and Southeast Asian governments have recognized the value-add potential of producing finished SAF domestically rather than exporting feedstocks. Policy frameworks are being put in place to capture that value. Simultaneously, in the United States, the "One Big Beautiful Bill Act" restricts key production tax credits (Section 45Z) to facilities using North American feedstocks — creating strong incentives for domestic greenfield investment.

This geographic diversification of production capacity is not a complication for process technology providers — it is an opportunity. A facility in Malaysia, the US Midwest, or Northern Europe each works with a different primary feedstock: PFAD, distillers' corn oil, tallow, or UCO. The process technology must be flexible enough to handle that range.

What a viable SAF production unit looks like

A common barrier to entry is the perception that SAF production requires massive capital outlay. Plant economics do improve substantially at scale — a facility processing 100,000 metric tons per year or more captures meaningful economies of scale. But entry-level capacity is smaller than many assume.

The smallest economically viable HEFA-based SAF unit starts at approximately 15,000 metric tons per year — a configuration particularly well-suited to large corn ethanol producers in North America, where distillers' corn oil (DCO) is available as a co-product of fermentation. At this scale, capital requirements are in the range of $50 million, making SAF production accessible to a broader pool of investors than greenfield refinery projects.

This is precisely the type of integrated, end-to-end process solution that Sulzer Chemtech delivers for renewable fuels — from feedstock pre-treatment through the hydrotreating reactor section to final product fractionation. For projects targeting the full value capture of SAF production, Sulzer also offers skid-mounted modular configurations that significantly increase the company's scope of supply, with single-project values exceeding $50 million in the most integrated configurations.

The decision calculus

For a project developer sitting down to evaluate a SAF investment today, the relevant variables are not just current market prices. They include: the regulatory mandate trajectory in the target market, feedstock availability and certification (category-3 tallow or certified UCO will be essential for any facility targeting European compliance), the total cost of production relative to long-term SAF price forecasts, and the flexibility of the process to switch between SAF and renewable diesel output as market conditions evolve.

Current prices create a favorable entry window. Mandates create the durable demand floor. Falling production costs in key feedstock markets create the margin durability. And the geographic expansion of the production base creates the addressable market for process technology.

For developers evaluating capacity in the 15,000 to 200,000 metric tons per year range, the critical variable to verify early is process flexibility — specifically, whether the reactor and fractionation configuration can optimize for either SAF or renewable diesel output without major capital modification. That optionality has real economic value as market dynamics shift.

Learn more about BioFlux(TM) SAF - production technology here