The energy transition is a means to meet the objectives set by the Paris Agreement. Faced with the challenges of the energy transition, many innovative companies are emerging and propose continuous technological progress. This paper focuses on optimizing collective self-consumption in an energy community composed of various members: households and public premises (stadium). Each member can produce, consume, exchange, sell (within the community or on the grid) and/or store photovoltaic energy. The considered community remains connected to the public grid and uses it. This study aims to provide optimal planning of the controllable loads for each member in the planning horizon. Moreover, it gives a plan of energy exchanges and a management scheme for electricity storage units installed in the community.