[en] Because of higher penetration of variable renewable energies, nuclear energy should adapt to changes in power demand in particular in countries with high nuclear energy share like France. We will present some results of a benchmark of technology dispatching tools. The models aimed at reproducing the hourly production of France during year 2012. The total demand as well as the actual productions of wind and solar energies are known and common assumptions for variable and ramping costs as well as technology efficiencies are taken. The compared outputs are aggregated costs, CO₂ emissions, average load factors for the different technologies. Then we will present some simulation results for the 2030 horizon. The results for future nuclear power show shift from base load to semi-base and even peaks. Zero power appears more and more likely and there are frequent occurrences of deep hourly/daily variations. This document is composed of an introduction and the slides of the presentation.