According to the query of OFweek solar photovoltaic network, it shows:

1. Solar panels, which 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. The quality and cost of solar panels will directly determine the quality and cost of the whole system.

2. Solar controller. The function of the solar controller is to control the working state of the whole system and 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. The storage battery is 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 needs to provide 22VAC and 11VAC AC power supply in many occasions.