Spanish energy firm Moeve and Zaffra, a joint venture between South African chemicals company Sasol Ltd (<a href="https://clientportal.jse.co.za/companies-and-financial-instruments/issuer-profile?issuermasterid=1506" target="_blank">JSE:SOL</a>) and Denmark's Topsoe, have signed a memorandum of understanding (MoU) to jointly assess the development of electro-sustainable aviation fuel (e-SAF) production facilities in southern Spain.