نبذة مختصرة : International audience ; This contribution relies on a prospective study of the French power sector up to 2050 conducted by the TIMES model, combined with a reliability condition for operation. To consider short-term power grid transient conditions, a reliability indicator related to the reserves of kinetic energy has been defined and endogenized in the model to guarantee the power system reliability under the implementation of a high share of variable renewable energy source (VRES). For a declining share of nuclear inducing a high share of VRES, the pace of investments, additional backup and flexible options to guarantee the grid's stability anytime have been studied.
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