Zheng Xiaoqiang representative for example, the promotion of solar photovoltaic power generation + electric heating technology, to the central region of Hebei, 100 square meters of household residential as an example, the installation of a 5 kilowatt photovoltaic power generation system, and the installation of an electric heating equipment (assuming the use of air source heat pump as electric heating equipment), the total investment of the project is about 50,000 yuan. The annual power generation of the photovoltaic system is 6000 kWh. If 30% of the electricity generation is used for self-use (including heating and other electricity) and 70% of the remaining electricity is connected to the grid, the annual income of household photovoltaic power generation is 3,732 yuan.The electricity required by the electric heating unit during the daytime operation time is jointly provided by the photovoltaic power generation system and the municipal electricity. At night, electricity operation enjoys the valley electricity price, and the annual heating season electricity cost is about 1260 yuan (if the photovoltaic system is not installed, the electricity cost is about 2200 yuan).
"To sum up, the installation of a photovoltaic + electric heating system, from a technical point of view, can not only supplement the electricity demand for electric heating through photovoltaic power, but also improve the proportion of photovoltaic power generation for self-use, and can solve the winter heating demand. From economics point of view, photovoltaic power generation system gains after paying electricity heating season, may obtain 2472 yuan extra income, relative and equipment initial investment of 50000 yuan, the static payback period for more than twenty years, can meet the expected investment recovery 6 to 8 years, currently exists in the promotion of economic barriers, need to get the policy support."Zheng Xiaoqiang representative said.
In this regard, Zheng Xiaoqiang suggested on behalf of the promotion of photovoltaic power generation + electric heating technology in the process, increase policy support. For projects adopting the photovoltaic power generation + electric heating mode, the photovoltaic power generation part will be subsidized 0.2 yuan/kWh at the provincial level for a period of 3 years (the same as the photovoltaic poverty alleviation policy). The project yield will be increased and the investment payback period will be shortened by increasing the income from electricity costs.Policy die erste installation subsidies to its electric heating equipment, compared with 80% of the equipment purchase price, ceiling is recommended within set to 20000 yuan (quite) with coal to electricity policy, as well as the electric heating user heating at night to enjoy valley electricity prices, by solving the initial investment is high, the later period of the high cost of electricity two obstacles, promote its popularization and application.