“…However, the large-scale uptake of RJF has been impeded by the high cost differential between RJF and fossil jet fuel, limited number of commercialized conversion technologies, highly competitive and international character of the aviation industry, and current lack of adequate (policy) incentives (de Jong et al, 2015;Hamelinck et al, 2012;Kousoulidou & Lonza, 2016; Mawhood, Gazis, de Jong, Hoefnagels, & Slade, 2016). The future role of RJF depends on contextual factors, of which the most important ones comprise the regulatory context, the availability of (low-cost) sustainable feedstocks, the commercialization of conversion technologies, and future oil price development (de Jong, Hoefnagels, van Stralen, et al, 2017;Gegg, Ison, & Budd, 2015;IRENA, 2017;Mawhood et al, 2016;Wang et al, 2016).…”