Evaluating the Impact of Sellback Rates and Metering Schemes on Battery Storage Size in Grid-Connected PV Systems

As residential photovoltaic (PV) systems continue to increase, integrating battery storage emerges as a critical strategy for enhancing system efficiency and grid stability. This paper underscores the significance of incorporating battery storage in grid-connected residential PV systems. Specifically, it delves into the optimal sizing of battery storage for homes equipped with PV plants. Through an extensive investigation, the paper investigates the impact of varying energy sellback prices, different net metering/billing schemes, and battery storage investment costs on the determination of optimal battery capacity for residential consumers. To address this complex optimization challenge, a mixed integer linear program (MILP) model is formulated, providing a systematic framework for decision-making. The paper's findings offer valuable insights into the interplay between financial incentives, regulatory mechanisms, and technological factors in shaping the optimal configuration of residential PV-battery systems.