Sequential Investment in Emerging Technologies under Policy Uncertainty
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- Discussion papers (FOR) 
Investment in emerging technologies is particularly challenging, since, apart from uncertainty in revenue streams, firms must also take into account both policy uncertainty and the random arrival of innovations. We assume that the former is reflected in the sudden provision and retraction of a support scheme, which takes the form of a fixed premium on top of the output price. Thus, we develop an analytical framework for sequential investment in order to determine how price, technological, and policy uncertainty interact to affect the decision to invest sequentially in successively improved versions of an emerging technology. We show that greater likelihood of subsidy retraction lowers the incentive to invest, whereas greater likelihood of subsidy provision facilitates investment. However, embedded options to invest in improved technology versions raise the value of the investment opportunity, thereby mitigating the impact of subsidy retraction and making the impact of subsidy provision more pronounced. Additionally, by allowing for sequential policy interventions, we find that the impact of policy uncertainty becomes less pronounced as the number of policy interventions increases.