# Transformer-Integrated AC Cabinet energy storage AC cabinet with an integrated step-up transformer for parks with distributed load points that need local step-up connection. energy storage AC cabinet with an integrated step-up transformer for parks with distributed load points that need local step-up connection. Transformer and storage conversion in one enclosure, cutting footprint and external cabling, with dry-type or oil-immersed transformer options. Sizing calculations, simulation and OEM/ODM delivery are available, with voltage level, capacity and interfaces adapted to each project.