This article reviews Juan Rosellón’s contributions to Energy Economics, focusing on regulation and investment in natural gas and electricity transmission networks, electricity market design, and renewable energy integration. His work develops optimization-based regulatory frameworks that combine market incentives with welfare-maximizing objectives. Key contributions include hybrid merchant–regulatory mechanisms for network expansion, pricing schemes grounded in second-best theory, advances in nodal pricing and financial transmission rights, and the H-R-G-V incentive mechanism for transmission investment. More recently, his research addresses uncertainty, environmental externalities, storage, and large-scale renewable integration. Overall, Rosellón’s work provides influential analytical tools for efficient, sustainable, and socially oriented energy policy design.
María Teresa Costa‐Campi (Sat,) studied this question.