This workshop presented the point of view of the principal H2020 funded projects in the framework of clean energy transition on islands, thus consolidating their collaborative approaches and presenting new perspectives.  This collaboration among all the projects aimed at a cross fertilization to scale up the impact of the initiative, creating synergies and involving the different communities to take advantage of lessons learnt and already tackled issues. Hence, this workshop involved projects for an overall of 180 partners from all over Europe and 95 million of Euros of funding.  The scope of the workshop was to present the results and the future approaches among the different areas faced during the previous webinars, increasing the awareness, and focusing on strategies and practical solutions for decarbonization and energy efficiency on islands.  In parallel, information on NESOI funding opportunities and advancements was introduced: given the innovative focus of the second call for projects, interested parties were encouraged to acknowledge the latest advancements in term of island energy transition in Europe.