How many watts can solar power generate?

Theoretically, a solar panel 1 m2 10 hour can generate 1.2- 1.4 kWh.

Generally speaking, a 1 square crystalline silicon solar panel is about 120- 140W. If calculated by 120W, the sun at 6 o'clock in a day is120 * 6 = 720w.

10W lamp depends on how many hours it is used in a day, and it needs several rainy days in succession. If it is used for 9 hours a day and there are three rainy days, the panel is 30-50W.

Types of solar panels:

1, monocrystalline silicon solar cells:

At present, the photoelectric conversion efficiency of monocrystalline silicon solar cells is about 15%, and the highest is 24%, which is the highest among all kinds of solar cells at present, but the manufacturing cost is too high to be widely popularized.

2, polysilicon solar cells:

The manufacturing process of polycrystalline silicon solar cells is similar to that of monocrystalline silicon solar cells, but the photoelectric conversion efficiency of polycrystalline silicon solar cells is much lower, and its photoelectric conversion efficiency is about 12% (the most efficient polycrystalline silicon solar cells in the world were listed in Sharp, Japan on July 1 2004). ?

3. Amorphous silicon solar cells;

Amorphous silicon solar cell is a new type of thin-film solar cell which appeared in 1976. Its manufacturing method is completely different from that of monocrystalline silicon and polycrystalline silicon solar cells, which greatly simplifies the technological process, consumes little silicon material and consumes less power. Its main advantage is that it can generate electricity in weak light.

4. Multicomponent compound solar cells:

Multicomponent solar cells refer to solar cells that are not made of single-element semiconductor materials. At present, there are many kinds of research in various countries, and most of them have not been industrialized.