The process risk allocation is essential for effective PPP contracts, depending on the scope of defined tasks and responsibilities between the parties in their quest to deliver public services. However, risk in critical infrastructure is sui generis risk which could not be treated contractually and transferred by the public sector to the private sector or retained by the party to an arrangement which is suited best to borne such risks.
Bovis, C. H. (2015). Risk in public-private partnerships and critical infrastructure. European Journal of Risk Regulation, 6(2), 200-207. https://doi.org/10.1017/s1867299x00004505