Special issue on advances in renewable energies, materials and technology Hamid Oughaddou, Abdelkader Kara, Nabil Rochdi, Yannick J. Dappe and Laurene Tetard Eur. Phys. J. Appl. Phys., 98 (2023) E2 Published online: 10 November 2023 DOI: 10.1051/epjap/2023230186