The sunshine rate in China can be divided into four areas with sunshine radiation. A sunshine rate of about 4.8 hours, such as the Qinghai-Tibet Plateau. B sunshine rate is 3.8-4.8 hours, such as Xinjiang and Inner Mongolia, C sunshine rate is 2.9-3.8 hours, such as Gansu and Shaanxi, and D sunshine rate is less than 2.9 hours, such as Sichuan, Guizhou and Hunan. The calculation method is: photovoltaic panel 1 kW× sunshine rate = equal to power generation. Selection and installation design of photovoltaic module system: Use different photovoltaic products in different sunshine areas, areas with high sunshine emissivity (monocrystalline silicon modules), areas or buildings with low sunshine emissivity (polycrystalline silicon modules), cities or dense areas (thin film power generation modules). The installation angle is south 18-30 degrees. 3. Income calculation: the electricity price of electricity sold in areas with high sunshine rate is different. Take Guangdong as an example: the electricity consumption of Guangdong residents is 0.65 yuan/kwh, the income from photovoltaic power sales is 0.453 yuan/kwh, and the state subsidy is 0.008 yuan/kwh. The monthly income of installing10kW photovoltaic power generation is calculated as 460 yuan in full-online mode and 650 yuan/month in full-online mode, that is to say.
4. Input: The photovoltaic power generation project is mainly composed of photovoltaic panels, inverters, brackets, lightning protection devices, photovoltaic lines, electrical boxes and other components, and tile installation is the cheapest. Take 10 kW as an example, the installation cost is about 45,000 yuan, and the leakage-proof design of the arbor is the most expensive. Take 10 kW as an example, the installation cost is about 55,000 yuan.
According to the author's understanding, an investment of 60,000-70,000 yuan can theoretically be realized within 6 years. In addition, the monthly income 15 yuan of each photovoltaic panel after cost recovery is unreasonable, because photovoltaic panels are decreasing year by year, and the attenuation rate depends on the product brand.