This communication develops a sociological perspective to analyze the distributed regulation of electricity market between political authorities and independent authorities in France. The extension of the regulatory state paradigm to the energy sector interferes with the energy transition policy, triggering a struggle of competencies and legitimacy in the design of economic instruments and market regulation. This communication focuses on the controversial redesign of electricity market allowing the integration of demand-side management services as load shifting aggregator. It describes legitimacy constraints and deliberation process specific to each authority. It argues that the trajectory of market redesign is influenced by the rivalries between political and independent authorities and their claims of jurisdiction. Rivalries and struggles are contributing to a learning process. Authorities are aware of their interdependencies, trying to anticipate others reactions, and trying to manage interdependencies by informal coordination.