The Swiss Hydro Asset Modernization Assessment project (SHAMA) aims at studying the impact of the political, economic and environmental contexts on the best technical solutions for hydropower plant renovation resulting from a systematic assessment process using the RENOVHydro Library. The various Swiss and European political strategies, the evolution of electricity price, climatic changes and environmental constraints are factors that have a direct impact on return on investment of the hydropower renovation for which the best technico-economic solution can be significantly different.