1. Introductory chapter: effects of power quality problems on energy efficiency of power systems<br>2. Energy transition in Ecuador, a proposal to improve the growth of renewable energy and storage systems in a developing country<br>3. Network reconfiguration to allocate open points in distribution networks using soft computing<br>4. Harmonics suppression in polluted renewable isolated/grid-connected microgrids<br>5. Modelling, analysis, and improvement of energy consumption in data centres via demand side management<br>6. Recent maximum power point tracking methods for wind energy conversion system<br>7. Energy saving of isolated microgrids comprising proton exchange membrane fuel cells stacks feeding variable loads based on artificial intelligence-based approaches<br>8. Design of energy-efficient power transformers by considering nonlinear loads<br>9. Parametric simulation approach for performance analysis of the power electronics circuits<br>10. Evaluating the impact of active analysis tool in specific design oriented power electronics teaching: the SRMIST experience<br>11. Voltage regulation in distribution networks with high penetration of distributed photovoltaic systems<br>12. Role of hydrogen in emerging low carbon energy systems<br>13. Sizing and feasibility analysis of a self-governing hybrid electric vehicle charging system<br>14. Low voltage ride through enhancement in interconnected system through center of inertia approach<br>15. Fundamentals of energy efficiency to management renewable energy sources in electrical grids<br>16. Cost implications of energy efficiency in renewable energy systems<br>17. Modeling transformer operations under dc bias<br>18. Grid connected converters in power grids systems: a systematic review on impacts and challenges<br>19. Behavioral analysis of Central American power market during pandemics and natural disasters<br>20. Modeling, integration, and simulation of the 300 MW photovoltaic power plant in the Saudi Arabia transmission network considering low-voltage ride-through capability