Economic evaluation, optimization and comparison of electrical and heat storage system in single-family buildings with increasing share of renewable energy

This paper deals with the investigation and economic evaluation of power supply systems in residential buildings with different shares of renewable energy in different years, different regulatory boundary conditions and cost digression estimations. A linear programming approach is selected for the determination of technical and economical capabilities of this energy system. By investigating and simulating different electricity supply system configurations electricity tariffs have been forecasted. On the contrary to expectations, the studies have shown that energy supply system in households with electricity energy storage will be more profitable than without. The cost effectiveness of storage systems strongly depends on energy demand of the household, the cost of storage, variable electricity tariffs and political decisions.