NextEra Energy Inc, Korea Electric Power Corp, The AES Corp, Vistra Energy Corp, and Neoen SA are the top 5 Global Energy Storage System (ESS) owners in 2021 by rated power. Understanding the various stakeholders in energy storage projects unveils the complexities associated with energy transition and grid reliability. 2(51) Fully integrated netowrk components means ‚network components that are integrated in the transmission or distribution system, including storage facilities, and that are used for the sole purpose of ensuring a secure and reliable operation of the transmission or distribution system, and. The landscape of ownership is often influenced by strategic investments aimed at enhancing grid resilience and promoting sustainability across various energy markets. The market reached an estimated USD 15.