The book sum-up findings of a research aimed at emphasize factors, at both country specific and international level, that may impact on the feasibility of initiatives for deploying energy from the sun, such as the Mediterranean Solar Plan (MSP). The study analyses those aspects that may either allow or limit rules coordination and a shared energy regulatory framework for the Mediterranean region to emerge. The study, thus, has a double objective: firstly, to analyze current developments of the energy regulatory framework in the south-Mediterranean area, secondly, to investigate the degree of rules harmonization in the area and the role of the European Union as rules promoter. Case in point of this work are regulatory agencies, which have been involved in the study through two surveys. In particular, agencies' independence from political power and industry stakeholders is analysed looking at the decision making powers, the organzational authonomy, and the accountability measures. In addition to new and original findings, this work provides for a thorough literature review and reorganization of the most recent available data on south-Mediterranean energy regulatory framework.