The solar power generation system consists of a solar cell group, a solar controller, and a battery (group). If the output power is AC 220V or 110V, an inverter is also required.
a. The solar panel is the core part of the solar power generation system. The function of the solar panel is to convert the light energy of the sun into electrical energy, and then output the direct current and store it in the battery.
b. Solar controller: The function of the solar controller is to control the working state of the entire system, and to protect the battery from overcharge and overdischarge. In places with large temperature difference, a qualified controller should also have the function of temperature compensation.
c. Battery: generally 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 electrical energy emitted by the solar panel when there is light, and release it when needed.
d. Inverter: The direct output of solar energy is generally 12VDC/24VDC/48VDC. In order to provide power to 220vAC electrical appliances, it is necessary to convert the DC power generated by the solar power generation system into AC power, so a DC-AC inverter is required.

Factors to consider when generating electricity from a solar system:
1. Where is the solar power generation system used? How is the solar radiation in the area?
2. What is the load power of the system?
3. What is the output voltage of the system, DC or AC?
4. How many hours does the system need to work per day?
5. In case of rainy weather without sunlight, how many days does the system need to supply power continuously?
6. In the case of the load, pure resistive, capacitive or inductive, what is the starting current?
7. The number of system requirements.