List of Articles Optimal sizing Open Access Article Abstract Page Full-Text 1 - Optimizing investment of pumped hydro storage system for renewable energy future Zohreh Goudarzi Jafar Bagherinejad Majid Rafiee Amir Abolfazl Souratgar 10.22094/joie.2023.1974939.2022 Open Access Article Abstract Page Full-Text 2 - Optimization of grid independent diesel-based hybrid system for power generation using improved particle swarm optimization algorithm Akbar Maleki Fathollah Pourfayaz