A fully integrated, prefabricated container-based energy storage system designed for large-scale grid-level and microgrid applications. Combines high-efficiency battery cells with intelligent management technology to deliver a safe, flexible, and cost-effective one-stop solution. Dorce Prefabricated Construction designs and manufactures customized containerized energy storage units, delivering turnkey solutions for clients in renewable energy, oil & gas, industrial, defense, and utility sectors. Manufactured in factory controlled environments, these containers integrate batteries, power conversion systems. Smaller distribution substations are subdivided into container-sized modules, which can be manufactured, assembled and tested at the factory, allowing easy transport and fast installation and commissioning at site.