What is the policy subsidy for photovoltaic power generation? For distributed photovoltaic power generation projects put into operation after January 1, 218, which adopt the mode of "spontaneous self-use and surplus access to the Internet", the subsidy standard for full electricity consumption is reduced by .5 yuan, that is, the subsidy standard is adjusted to .37 yuan per kWh (including tax). The distributed photovoltaic power generation project with "full access to the Internet" mode shall be implemented according to the price of photovoltaic power station in the resource area.

the solar photovoltaic power generation system consists of a solar battery pack, a solar controller and a storage battery (pack). If the output power supply is AC 22V or 11V, an inverter is also required. The functions of each part are as follows:

(1) Solar panels: Solar panels are the core part and the most valuable part of solar power generation system. Its function is to convert the radiation ability of the sun into electric energy, or send it to the storage battery for storage, or push the load to work.

(2) solar controller: the function of the solar controller is to control the working state of the whole system, and to protect the battery from overcharge and overdischarge. In places with large temperature difference, qualified controllers should also have the function of temperature compensation. Other additional functions, such as light control switch and time control switch, should be optional for the controller;

(3) storage battery: generally, it is a lead-acid battery. In small and micro systems, nickel-hydrogen battery, nickel-cadmium battery or lithium battery can also be used. Its function is to store the electric energy generated by solar panels when there is light, and then release it when needed.

(4) inverter: the direct output of solar energy is generally 12VDC, 24VDC and 48VDC. In order to provide electrical energy for 22VAC appliances, it is necessary to convert the DC energy generated by the solar power generation system into AC energy, so it is necessary to use DC-AC inverter.