Enhancing the feasibility of airport PPP projects with hybrid funding

In transport infrastructure concessions, the sources of revenue to the private partner (or concessionaire) may include (i) the infrastructure users (e.g., landing fees, in the case of airports), (ii) the government (e.g. through availability payments), and (iii) both users and government, which might be called a hybrid concession. An example of the latter is a highway concession where the concessionaire charges tolls to the road users but, because of relatively low revenues, the government agency complements the toll revenue with availability payments. Focusing on airports, this paper summarizes the cases where it may be justified for the government to complement users’ revenues and describes a model developed for the financial assessment of airport concessions involving payments by both the government and airport users, through the collection of several charges. The methodology described in the paper is also used to review the flexibility in new or ongoing airport concessions to mitigate traffic risks, which have been aggravated by the COVID-19 pandemic. The methodology can also be applied to other forms of transport infrastructure. A practical application of the model is demonstrated in the paper, using publicly available information, as well as basic assumptions, to build case studies for the Larnaca and Paphos airports in Cyprus. The model can also be used to carry out sensitivity analyses of the impact of key input parameters on outputs such as the investor’s return on equity and annual debt service cover ratio