The April 2018 edition of 'World Energy Inside' highlights major events during Berlin Energy Week, including the collaboration between the energy and blockchain sectors, with over 3,000 participants and the announcement of six winning start-ups focused on climate protection. Additionally, it discusses Colombia's efforts to integrate renewable energy sources into its electricity system and the upcoming World Energy Leaders' Summit in Argentina scheduled for June 2018. The document also introduces the publication 'Energy and Geostrategy 2018' and outlines several upcoming energy events.