Battery Neighbourhood Storage for a Climate Protection Settlement

The strong expansion of renewable energies has led to the increasing importance of storage systems. Decentralized storage solutions, including home and neighbourhood storage systems, play an important role in this context. This study compares individual home storage systems with a common neighbourhood storage system. The use case is to optimize the use of photovoltaic energy generated in the settlement. The criteria investigated are the grade of autarky and self-consumption. A simulation tool was developed to perform load flow simulations based on household electricity consumption, electric vehicle charging profiles, heat pumps and photovoltaic generation data for different battery capacities and system boundaries. The results show that neighbourhood storage systems can achieve a maximum increase in the grade of autarky of up to 8.47 % and an increase in self-consumption of 6.87 % compared to individual home storage systems with equivalent cumulative battery capacities for the given use case. In the exemplary case the common neighbourhood storage requires only about halve of the battery capacity compared to the cumulated capacity of all individual storages to achieve the same grade of autarky for a typical operation case.