Agajie, E. F., Agajie, T. F., Amoussou, I., Fopah-Lele, A., Nsanyuy, W. B., Khan, B., Bajaj, M., Zaitsev, I., Tanyi, E. (2026). Retraction Note: Optimization of off-grid hybrid renewable energy systems for cost-effective and reliable power supply in Gaita Selassie Ethiopia. Scientific Reports. https://doi.org/10.1038/s41598-026-42629-2