The economic inefficiency of grid parity: The case of German photovoltaics

摘要: Since PV grid parity has already been achieved in Germany, households are given an indirect financial incentive to invest and battery storage capacities. This paper analyzes the economic consequences of household's optimization behavior induced by for in-house electricity consumption combining a household model with system model. Up 2050, we find that save 10% - 18% their accumulated costs covering 38 57% annual demand self-produced electricity. Overall, cost savings on level amount more than 47 bn €2011 up 2050. However, while is beneficial from single perspective, it inefficient total perspective. The found cause excess 116 until Moreover, leads significant redistributional effects raising burden (residual) consumers 35 In addition, yields massive revenue losses side public sector network operators 77 69 respectively. order enhance overall efficiency, argue should be abolished energy-related tariffs replaced which reflect connection.