AC Load for a microgrid

Good day everyone, I would like to ask on how can I model an AC load on simulink. It is my first time to use this simulink so I do not know on how should I represent an AC load. The system will consist of a PV and WECS as its source and a BESS for backup. If you have any tutorial or suggestions on how can i construct this system, please dont hesitate to leave a comment. My first step is to just connect first the BESS on the AC load to check its response. Thank you