The conversion efficiency of monocrystalline silicon is the highest, usually as high as 15-18%. It can reach 20% or higher in the laboratory, but it cannot be achieved in practical applications and is very expensive. A reasonable choice is usually 15% to 16%, and the application value is relatively stable.

         Polysilicon can usually reach 12-17%. In the case of the same specifications, its power generation is less than single crystal silicon, and it is cheaper than single crystal silicon, but has better temperature resistance than single crystal silicon.

         About 6-8% of amorphous silicon thin film batteries are expensive and suitable for applications that require high appearance. Considering the economic advantages, it is inferior to single crystal polycrystalline.

          However, only comparing efficiency values is not accurate. It is important to check the rated power generation of W. The efficiency value is not a percentage value, so it is a decimal point. For example, if the rated power is 250W, and the standard specification of 60 pieces is 1650mm * 992mm, the efficiency is 250W / (1.650 * 0.992), divided by 1000 is 15.3%, but some manufacturers display this value. In the production process, if the specification is reduced and the standard size is reduced to 1640 * 990, the efficiency value will increase, but the 250W power generation capacity will not change.