To achieve carbon neutrality in the future, the penetration of renewables requires further improvement with the help of energy storage technology. Green hydrogen and green ammonia have been recognized as the optimal candidate for grid-scale energy storage. Except for water electrolysis, biomass chemical looping technology is another clean hydrogen production method with a cross-sector decarbonization feature. As a result, it starts to attract more concerns. In this study, a novel integrated renewable multi-generation system based on chemical looping technology has been proposed. The technical and economic performance is evaluated after optimal planning. Hydrogen and ammonia are served as energy carriers in two scenarios. The results show that the proposed system is profitable, and the ammonia-based scenario is superior to the hydrogen-based scenario. The cumulative cash position and payback period of the hydrogen-based scenario are 210 MUSD and 12 y, compared to 853 MUSD and 6 y in the ammonia-based scenario.