Huamán-Romaní, Y.-L. (2023) “Techno-Economic Energy Optimization of the Off-Grid Electrical System with Power to Gas Storage Technology ”, International Journal of Integrated Engineering, 15(4), pp. 248–258. Available at: https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/13899 (Accessed: 12 April 2026).