Tackling the principles of regulation and energy economics is useful to provide a comprehensive understanding of the mission and duties of a regulator in the context of changing energy markets. The training discussed key principles of energy regulation, detailing what objectives regulatory authorities address as well as their core powers and competences. To do so, the course presented the fundamentals of energy economics both in the gas and electricity markets and relate them to the different duties and tools of regulators, with the goal to unravel the complex relationship between regulation and the management of energy markets. The course balanced theory with practical case studies presented directly by decision-makers involved, including energy regulators, academics and professionals from energy companies.