This is the accepted manuscript included into the Proceedings Book. A more collaborative, interdisciplinary, open, transparent and reproducible science begins to be required by Public Funding Agencies along the world. This contribution explains how a real project funded by the European Commission and researching in six innovative photovoltaic solutions, has embraced concepts of Open Science to foster innovation in our sector. In this paper we mainly focus on the concept of knowledge coalitions for sharing data and know-how. We aim at assisting and encouraging our colleagues to adopt such practices that entail the performance of a more responsible research aligned with the values and needs of our era.