Economic Assessment of Lithium-Ion Battery Storage Systems in the Nearly Zero Energy Building Environment

Scope of this paper is to deliver a complete techno-economic model for the economic assessment of lithium-ion battery energy storage systems in the framework of the nearly zero energy buildings (NZEB). The proposed model simulates the combined operation of photovoltaics, solar thermal generators, heat pump generators, electrical and thermal storage devices in order to represent efficiently the typical characteristics of NZEBs. The model takes into account the thermal and electrical needs of the building, typical electricity prices, household electrical consumption profiles, weather data and typical costs for lithium battery energy storage systems. Using these inputs, an optimization procedure is applied and the optimal size, in terms of net present value, for the lithium-ion battery energy storage system is derived.