[en] In a first part, this publication outlines the present critical situation of the world, presents the negaWatt scenario as a compass for action, outlines that the method adopted for this scenario is rigorous, coherent and fruitful (a bottom-up approach, economy at the right place, carbon print and material assessment), outlines the need of a wider approach in space and in time, and the independence of this collective approach. The second part defines the objective as a more sustainable and fairer society with a global reduction of the environmental print (climate neutrality, renewable energies, reduction of material consumption, protection of biodiversity and of water resources), new economic dynamics (competitiveness of renewable energies, new industrial strategies, value creation at territorial scale, activities generating diversification and growth), perspectives of social progress (job creation, struggle against vulnerabilities and hunger, limitation of inequalities), improvement of living conditions (better health and well-being, a healthier environment, living better with less), a shared governance at all scales (democracy and efficient regulating institutions, education and information, partnerships, focus on local action). The third part details various sector-based measures (building renovation, mobility, industrial strategy, food transition and methanization, territorial development of photovoltaic, acceleration of wind energy development, a well managed nuclear phasing out), and transverse measures (governance, support to job evolutions and to ecological conversions, financing of energy transition). A fourth document proposes a synthetic presentation of these same elements