Grid Connected Energy System To Profit From Net Metering And Variable Rate Electricity

Abstract

The growing demand for electrical energy and the widespread adoption of net metering policies require efficient systems capable of monitoring and managing bidirectional energy flow between consumers and the utility grid. This paper presents a grid-connected energy storage and monitoring system designed to maximize benefits from net metering and variable electricity tariffs. The proposed system enables accurate measurement, computation, and display of both energy consumption and energy export within a residential environment.The system utilizes a home grid configuration that connects household loads with the utility supply. Two energy meters are employed to perform bidirectional energy measurement. One meter records the electrical energy exported to the grid, while the second meter measures the energy imported from the utility mains. This dual-meter arrangement ensures reliable tracking of both energy flows.A microcontroller serves as the central processing unit, collecting data from both meters and calculating consumed and exported energy during each billing cycle. A regulated power supply and crystal oscillator provide stable system operation and timing accuracy. The processed information enables precise net energy computation and transparent billing. The calculated net units are displayed on an LCD in real time.The proposed system improves billing transparency, increases consumer awareness, and encourages efficient energy utilization. It also supports renewable energy integration and offers economic advantages for both consumers and utility providers.