I. INTRODUCTION  
II. RENEWABLE ENERGY SOURCES (RES)  
III. ENERGY HARVESTING-BASED COMMUNICATION OVER POINT-TO-POINT WIRELESS LINK  
IV. ENERGY HARVESTING-BASED MULTIPOINT-TO-POINT WIRELESS SYSTEM  
VI. ENERGY HARVESTING-BASED MULTI-HOP WIRELESS COMMUNICATION LINK  
VII. WIRELESS POWER AND INFORMATION TRANSFER  
VIII. SMART GRID-POWERED WIRELESS NETWORKS  
IX. ENERGY PLANNING UNDER DYNAMIC PRICING  
X. TWO-WAY ENERGY TRADING AND COOPERATION  
XII. LESSONS LEARNT AND FUTURE RESEARCH DIRECTIONS  
XIII. CONCLUSION  