SkyNRG and KLM held the ceremonial start-of-construction event on May 28, 2026 for DSL-01 in Delfzijl, the Netherlands’ first facility fully dedicated to the production of sustainable aviation fuel. (SkyNRG announced financial close and the start of physical construction earlier in the year, in February 2026.) The plant will produce approximately 100,000 tonnes of SAF per year via the HEFA pathway using Topsoe HydroFlex hydroprocessing technology, with feedstocks including used cooking oil and residual fats and greases. A further 35,000 tonnes of biobased propane, butane and naphtha will be produced as co-products. KLM is the anchor offtaker at 75,000 tonnes per year, equivalent to 75 percent of plant output. SkyNRG describes DSL-01 as the first commercial-scale SAF plant to secure non-recourse project financing. Startup is targeted for mid-2028.
The structural significance worth reading carefully is the financing milestone rather than the nameplate capacity. Non-recourse project finance is the threshold the SAF industry has been chasing for years. Most SAF projects to date have closed on corporate-balance-sheet financing, grant support, DOE loan guarantees or a combination — structures where the project sponsor’s credit or a public-sector guarantee, rather than the project’s own cash flows, ultimately backs the debt. SkyNRG’s own characterization of DSL-01 as the first commercial-scale SAF plant to secure non-recourse project financing has not been independently corroborated by lender documentation in the public record, and the distinction between true non-recourse and limited-recourse with sponsor- or offtaker-credit support is material. A 75-percent take-or-pay-style anchor offtake from KLM is itself a form of credit support to the project’s cash flows. The structural read is that DSL-01 sits closer to true non-recourse than most European SAF plants to date — and that is a meaningful signal about the bankability of mandate-backed SAF revenue — but the exact characterisation deserves to be parsed against the facility documentation as it becomes available.
As the first airline in the world, our long-term offtake agreement directly contributes to the financing and realization of this facility.
That line, from KLM CEO Marjan Rintel, identifies the lever the deal is pulling. The KLM offtake at 75 percent of output is what made the project’s cash flows bankable to the structure SkyNRG describes. Maarten van Dijk, CEO of SkyNRG, framed the milestone as the moment Dutch SAF production moves from ambition to implementation. The proof point is the structure rather than the volume. On illustrative basis numbers — a Dutch jet pool of approximately 5 million tonnes and the 6 percent ReFuelEU blending obligation in 2030 — KLM’s 75,000-tonne annual commitment is roughly a quarter of the SAF volume needed at Dutch airports for that year (ReFuelEU obligates fuel suppliers at EU airports rather than Member States, so this is an analytic frame rather than a statutory obligation on the Netherlands). DSL-01’s 100,000-tonne total SAF output is roughly 4.5 percent of the EU 2030 biogenic-residual SAF requirement on the same basis (46 million tonnes EU 2030 jet pool, 6 percent total SAF blending obligation, less the 1.2 percentage-point e-SAF sub-mandate that begins in 2030 averaged across 2030 and 2031).
The execution detail worth holding onto is the feedstock pathway. UCO and residual fats and greases sit under RED III Annex IX Part B. RED III Article 27 imposes a 1.7 percent cap on Part B feedstocks’ contribution to the road and rail renewable-fuel obligation, which constrains how much UCO/tallow demand can be drawn into road-fuel demand and therefore shapes the available supply pool for aviation. ReFuelEU Aviation does not replicate that Part B cap on the SAF mandate itself — Part B feedstocks are eligible SAF feedstocks under ReFuelEU. The cross-regime point worth holding onto is the feedstock-pool competition with road, not a SAF-mandate cap. Topsoe HydroFlex is the same hydroprocessing platform used in other commercial HEFA SAF facilities globally; the technology is established. The novelty is the project-finance structure rather than the process.
The forward read is whether the Delfzijl precedent replicates across the European HEFA pipeline. EET Fuels’ 200,000-tonne Stanlow methanol-to-jet hub is targeting FID in early 2028, on a different pathway (methanol-to-jet) and a different financing question. The closer European comparable on the residue-alcohol-to-jet side is the recently launched Rebound JV at Dunkirk, which is at the engineering-studies stage and not yet at FID. If DSL-01’s financing close demonstrates that mandate-backed SAF offtake is bankable on something close to its own credit, the financing picture for the next European HEFA, ATJ and methanol-to-jet plants becomes structurally easier. The 2026 to 2027 window is when that proof gets tested across the pipeline.
Source: KLM newsroom
