We model a portfolio of real options with cost contingency and government subsidy at the operation stage. We demonstrate that the investment value is highly sensitive to cost and revenue uncertainties. Our numerical analysis suggests that the investment value of risky project is higher when net...

This paper argues that because of the irreversibility and uncertainty associated with Build-Operate-Transfer (BOT) infrastructure projects, their financial evaluation should also routinely include the determination of the value of the option to defer the construction start-up. This ensures that...