Q: Now that the epidemic is so severe and there is overcapacity in various industries, will the price of photovoltaic products still drop significantly?

　　A: First of all, a set of photovoltaic power generation system is composed of solar modules, photovoltaic inverters, photovoltaic supports and related auxiliary materials. The phenomenon of overcapacity only exists in solar module manufacturers, not the entire industry chain is surplus; secondly, photovoltaic power generation The price of the system has dropped by about 60% compared with the initial stage. Without revolutionary technological changes, the price will basically not have much room to go down.

　　Q: What about the warranty period and lifespan of photovoltaic products?

　　A: The core of the photovoltaic power generation system is the solar panel, which generally has a 10-year product warranty and a 25-year linear power warranty. The overall design life of a qualified photovoltaic power generation system is not less than 25 years.

　　Q: It seems that the development of photovoltaic power generation + energy storage systems has been around for many years. Why hasn't it been fully popularized now?

　　A: Thermal power generation accounts for about 50% of the world’s total power generation. The forced shutdown of thermal power at once will cause negative social impact. Therefore, the development of the photovoltaic industry first is to control costs, and the second is to follow the policies of various governments. conduct.

　　Q: Will hail damage the solar cell?

　　A: The photovoltaic module can withstand the impact of hail with a maximum speed of 44m/s and a diameter of 35mm. We generally recommend that owners who install photovoltaic power plants purchase corresponding insurance. In the unlikely event of a similar natural disaster, insurance companies can provide corresponding compensation services.

　　Q: What does Kwp mean?

　　A: The peak watt (Wp) is the unit for calculating the capacity of the solar device (usually used for the nominal power of the solar panel), and is the installed solar module and the standard environment (module temperature 25℃, air quality AM1.5, 1000W/m2 The sum of the maximum power generation under sunlight). 1 peak watt (Wp) = 1 watt per square meter, 1 kilowatt (kwp) = 1000 peak watts (Wp).

　　Q: What is the current status of photovoltaic power generation in the United States?

　　A: The installed capacity of distributed (family rooftop) photovoltaic power generation systems in the United States ranks first in the world, and the market share of large-scale centralized photovoltaic power plants and distributed photovoltaic power plants is almost equal.

　　Q: Is the investment in photovoltaic power generation too large?

　　A: Photovoltaic power generation is an intensive investment. The initial investment is relatively large, but the power generation cycle of the system is 20-25 years, and many countries have subsidies or preferential loan policies. Generally, the cost can be recovered in about 8 years, and the static rate of return can reach up to 15%.

　　Q: I don’t know if the sunshine time is too short.

　　A: According to NASA's meteorological data, different latitudes and longitudes have different irradiance. The annual sunshine in more than 2/3 of the total area of the United States is more than 2000 hours, and the annual radiation is more than 5000MJ/m2, which is suitable for photovoltaic installation. Power system.

　　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.