Solar panels: the most import and expensive part in the power system, it can transfer the solar energy to electric power and send to the battery storage, then make the the load work. The quality and cost of the solar modules is decided the whole system quality and price. There is :monocrystalline solar panels, polycrystalline solar panels, Amorphous silicon solar panels, film solar panels.

 
The conversion efficiency of mono solar panels is around 17%, some can reach to the best of 24%, that is the highest of conversion rate, but the cost too much, which is not able to be afford and used widely. As the mono solar panels assemble with the steel tempered glass and waterproof resin, it is very hard and durable, usually the life time is 15 years, and the maximum can be up to 25 years.

The procedure of poly solar panels is similar to mono solar panels, the conversion is about 15% more lower than mono solar panels. From the cost of the production, it is more cheaper than the mono solar panel, the procedures more easy and more saving power consumption, the final total cost is less, so it was widely used. What’s more, the poly solar panel lifetime is short than mono solar panel, compared with the cost and performance, the poly solar panels more competitive for the market.