摘要:The availability of financial resources has been pointed out as one of the determining factors for the investment in renewable self-consumption solutions for the energy transition in the European Union. In economic terms, the barriers to investment are related to low levels of profitability and difficulties in accessing financing in some European regions. These barriers must be overcome to foster a sustainable energy transition. However, this topic of analysis is still underexplored in the literature to date. This study provides a characterisation of the financial resources applied to self-consumption from an economic–financial approach to the decision-making investors in a case study in Spain from a novel focus on the subject. The relevance of alternative financial resources as a mechanism to reduce existing barriers is revealed through the analysis of the active role that installers play in making investment decisions, facilitating the growth of self-consumption. The alternative financial channels and the bank intermediation for renewables are topics of interest to promote the energy transition towards a low-carbon economy.