Hajimineh, R. , Sabri, P. and Rezaei Rad, E. 2025. The expansion of BRICS and its impact on the use of renewable energy sources: a case study of hydrogen energy. Future Energy. 5, 1 (Oct. 2025), 10–19. DOI:https://doi.org/10.55670/fpll.fuen.5.1.2.