Gopinatha Panicker*
The demand of energy has been achieved substantial attention all over the world nowadays. To meet the supply requirements, the newly emerging renewable energy technologies has been preferred as a strong alternative which could meet the demand. Most prominent renewable form of energy resources are solar system, wind energy and tidal power. Among them the solar energy assists with maximum amount of power. Also, hybrid form of renewable energy systems are also becoming wide applicable. They include the combination of one or more renewable energy resources. For attaining maximum power from the suggested renewable sources, maximum power point tracking solution is used. Several energy storage systems are existing for storing the energy/power attained from the renewable energy resources. Battery storage, super capacitors, flywheel are some of the storage system. Optimization approach assures advanced storage mechanisms in renewable energy system. This research work provides a comprehensive review on existing optimization approaches for storage in renewable energy resources along with its merits, demerits and future research direction.