The best place for solar power generation is not in the equatorial desert, nor in the cloudless plateau, but in space! Because the solar radiation in space can reach about ten times that of the ground, and it is not affected by weather conditions.

　　Although the space solar power station has unparalleled advantages, it has many problems that need to be solved, especially the orbit, relative position, etc., which are critical.

　　The orbit of a space solar power station generally has the following options:

　　(1) Geosynchronous orbit

　　The space solar power station has the same rotation angular velocity as the rotation angular velocity of the earth. Considering that the earth still revolves, the rotation angular velocity of the satellite needs to be fine-tuned. This scheme guarantees full power generation for half a day, and the ground energy receiving station can also be completely fixed.

　　(2) On the twilight line of the earth

　　The power-generating satellite can receive the sun's light at any time, and the height of this orbit is also adjustable, which greatly increases the utilization rate of the power-generating satellite.

　　Affected by the revolution of the earth, the direction of the plane where the twilight line of the earth lies is constantly changing. The orbit of the power generation satellite needs to be fine-tuned during the operation, and the position relative to the earth is also constantly changing, which causes great difficulties in the transmission of energy. .

　　(3) Place a relay satellite at the L1 point of the Earth and Sun Lagrange

　　Other power generation satellites can transmit energy to this relay satellite, and then use this relay satellite to transmit the energy to the ground through microwaves. However, the first of this plan is to build many microwave energy receiving stations at the equator, and the second is that the relative position is changing, and the transmission of energy is still a difficult problem.

　　Lithium-ion battery (LIB) has become the main energy storage solution in modern social life. Among them, lithium iron phosphate batteries are a perfect replacement for lead-acid batteries, and they are the first choice for grid-connected peak shaving, off-grid energy storage, photovoltaic energy storage, UPS, data center and other industries.

　　Solar power generation system with lithium battery energy storage system is a very promising clean energy.