Developed a user-facing electricity billing calculator for the NareshCSE/Java24CSEF repository, focusing on delivering a core billing capability with a clean interface and scalable pricing logic. The solution prompts users for previous and current meter readings, calculates units consumed, and applies a tiered pricing structure to determine the final bill. Built entirely in Java, the feature demonstrates proficiency in basic input/output operations, conditional logic, and modular code organization. The implementation is structured for testability and future QA, providing a clear billing path for end users. No bugs were reported or fixed during this period, reflecting a focused feature delivery.