IRENA and ICAO have jointly launched Finvest@ETAF, a dedicated initiative that applies the project facilitation model of IRENA’s Energy Transition Accelerator Financing (ETAF) framework — 14 partners and more than $4.15 billion in pledged capital — to the sustainable aviation fuel sector. The initiative provides SAF developers with structured support from initial bankability screening through to advisory services, technical assistance, and introductions to financing partners and de-risking instruments.
The launch addresses what is rapidly becoming the defining constraint on SAF scale-up: not technology readiness or regulatory demand, but capital mobilisation. A new IRENA experts brief accompanying the announcement identifies the specific barriers causing SAF projects to stall: high capital expenditure, elevated production costs, constrained feedstock supply chains, first-of-a-kind project risk premiums, certification requirements under frameworks such as CORSIA, and long-term offtake uncertainty. The cost and financing challenge is ultimately what determines whether SAF supply grows fast enough to meet mandate timelines. Many projects with credible technology and regulatory support are not failing on merit — they are failing to reach financial close because the structured financing pathways do not yet exist at scale for this asset class.
Finvest@ETAF is designed to close that gap at the project level rather than the policy level. IRENA contributes expertise in project facilitation and financial structuring — capabilities developed through ETAF’s existing deployment across the broader clean energy sector. ICAO contributes guidance on aviation sustainability standards, CORSIA certification frameworks, and global aviation policy mechanisms. The combination gives SAF developers access to both the financial structuring support they need to become bankable and the sector-specific regulatory knowledge required to navigate aviation’s certification requirements.
The IRENA experts brief also quantifies the macro case: SAF can reduce lifecycle GHG emissions by up to 80% compared to fossil jet fuel and is projected to account for 40–65% of aviation’s cumulative emission reductions by 2050. Closing the financing gap is therefore not a marginal issue — it is the critical path variable for whether aviation decarbonisation happens on schedule.
“Sustainable aviation fuels will shape the future of flight, but the sector has yet to take off at the scale needed. By leveraging IRENA’s financing network and ICAO’s technical expertise, Finvest@ETAF will support SAF projects across their entire lifecycle, bringing visibility to bankable projects while helping promising ideas develop into fully fledged proposals ready to attract investment.”
— Francesco La Camera, Director General, IRENA
The ETAF model’s track record in broader clean energy gives Finvest@ETAF a structural credibility that new SAF-specific financing vehicles often lack. Rather than creating a parallel institution, IRENA and ICAO are routing SAF projects through an existing network that has already mobilised capital at scale. For a SAF developer, the pathway is concrete: enter the Finvest@ETAF pipeline, receive bankability assessment, access advisory services, and connect to a pre-assembled network of financing partners and de-risking instruments — rather than navigating that infrastructure from scratch. Projects like the $2.5 billion Eco-Refinerías del Sur PtL facility in Argentina are emblematic of the challenge: technically credible, regulatory-aligned, and facing a multi-year process of investor engagement and financial structuring that Finvest@ETAF could materially accelerate.
With ReFuelEU Aviation blending mandates now in force and SAF production covering less than 1% of global jet fuel demand, the window for orderly scale-up is narrowing. Finvest@ETAF does not resolve the economics of SAF production, but it directly attacks the transaction costs and information barriers that are slowing the flow of available capital to deployable projects — and at $4.15 billion in pledged financing capacity, the initiative has the scale to move markets if the pipeline develops as intended.
Source: IRENA
