Optimal regulation of network expansion

Bert Willems, Gijsbert Zwart

Research output: Contribution to journalArticleScientificpeer-review

15 Citations (Scopus)


We model the optimal regulation of continuous, irreversible, capacity expansion, where a regulated firm has private information about capacity costs, investments are financed from the firm's cash flows, and demand is stochastic. The optimal mechanism can be implemented as a revenue tax that increases with the level of the price cap. If the asymmetric information has large support, then the optimal mechanism consists of a laissez-faire regime for low-cost firms. That is, the firm's price cap corresponds to that of an unregulated monopolist, and it is not taxed. This `maximal distortion at the top' is necessary to provide information rents, as direct subsidies are not feasible.
Original languageEnglish
Pages (from-to)23-42
JournalRAND Journal of Economics
Issue number1
Publication statusPublished - Apr 2018


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