The “Ambition to Action” (A2A) project provided support to the Argentinian NDC process between March 2017 and December 2019. This report provides a synthesis of the results of three years of supporting governmental and non-governmental constituencies with analytical support for the energy supply sector. At the core of the work were three strands. 1) Scenario analysis to support the understanding of the implication of the long term temperature goals of the Paris Agreement. 2) Analysis of socio-economic impacts of the energy transition, especially regarding employment and industrial development. And 3) a framework to help better understand the technical challenges of the energy transition in the power sector.