This document describes an electricity billing system project created to automate the manual electricity billing process. The system was developed using Java and MySQL on a Windows operating system. It aims to eliminate errors and hardship in the existing manual system through features like error checking when entering data and easy-to-use interfaces that require no specialized knowledge. Diagrams are included that outline the system architecture, including class, use case, activity, and sequence diagrams. Screenshots demonstrate features like customer login, billing calculation, and more.