Abstract
This study provides a new approach for evaluating the economic efficiency of Li-ion battery storage, by combining a self-developed economic model with a technical battery-aging model. The model is used to quantify the increase in self-consumption of electrictiy from a solar PV system by means of a home battery storage system. Regarding battery-aging, we find that the longest battery lifetimes can be achieved with the highest state-of-charge (SOC) limit, which is not economically efficient due to the limited self-consumption. Two of the three distributed battery pooling concepts investigated were identified as economically efficient, namely the cases of Caterva and Fenecon. The evaluation shows that economic efficiency can still be achieved with home battery pooling concepts. In future resarch, the model-based impacts on self-consumption and battery-aging found ought to be validated by using real world data from the systems analyzed.
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