The main difference between the traditional procurement method and the PPP method is that there is a greater risk transfer toward the private sector in the case of a private-public partnership project. This may mean that, if there are cost overruns compared with the consortium's submission, they will have to be absorbed by the consortium. Similarly, if the project is late and the risks in question have been transferred to the consortium, the latter will have to absorb the costs of schedule overrun.
In general, those risks are assumed by the Crown in the case of a project delivered using traditional methods. Even if the Crown makes payments for the delivery of the project, the private sector still provides its expertise so that the project may be delivered within the budget and the time frame.