Analysis of PV-Battery Systems in Prosumer Households Report

This research project investigates the operation of residential photovoltaic (PV)-battery systems within prosumer households, examining how household-controlled operations differ from system-optimal utilization. The study employs a household optimization model to minimize yearly power bills in two price zones in southern Sweden, alongside a dispatch model for a northern European power supply framework. The results highlight significant differences in battery charging and discharging patterns, influenced by incentives to maximize self-consumption of PV-generated power. The research compares household and system optimization scenarios, revealing that hourly power costs provide limited incentives for households to operate batteries in a system-optimal manner. Furthermore, the analysis explores the impact of prosumers on system operational costs, system dispatch, seasonal variations in battery charge and discharge, and the marginal price curve for less fluctuation, offering insights into the complexities of integrating distributed energy resources into the power grid.