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In the era of rapid development in the 21st century, the excessive consumption and exploitation of non-renewable energy has led to a shortage of conventional energy supplies such as oil, rising prices, serious environmental pollution, excessive carbon dioxide emissions, global warming and other environmental problems. On September 22, 2020, the country proposed a two-carbon goal of reaching carbon peak by 2030 and carbon neutrality by 2060.
Solar energy belongs to green renewable energy, and there will be no energy exhaustion. According to scientific data, the sun's energy currently shining on the Earth is 6,000 times greater than the actual energy consumed by humans, which is more than enough for human use. Under the environment of the 21st century, home-type rooftop solar energy storage products came into being. The advantages are as follows:
1, solar energy resources are widely spread, as long as there is light can produce solar energy, through solar energy can be converted into electricity, not limited by regional, altitude and other factors.

2, the family roof photovoltaic energy storage products can use solar energy to generate electricity nearby, without the need for long-distance transmission of electric energy, to avoid the energy loss caused by long-distance power transmission, and timely storage of electric energy to the battery.

3, the conversion process of rooftop photovoltaic power generation is simple, rooftop photovoltaic power generation is directly from light energy to electrical energy conversion, there is no intermediate conversion process (such as thermal energy conversion to mechanical energy, mechanical energy conversion to electrical energy, etc.) and mechanical movement, that is, there is no mechanical wear and energy consumption, according to thermodynamic analysis, photovoltaic power generation has a high theoretical power generation efficiency, can be up to more than 80%.

4, roof photovoltaic power generation is clean and environmentally friendly, because the roof photovoltaic power generation process does not use fuel, does not emit any substances including greenhouse gases and other exhaust gases, does not pollute the air, does not produce noise, does not produce vibration pollution, does not produce radiation harmful to human health. Of course, it will not be affected by the energy crisis and the energy market, and it is a truly green and environmentally friendly new renewable energy.

5, the roof photovoltaic power generation system is stable and reliable, and the life of crystalline silicon solar cells is 20-35 years. In the photovoltaic power generation system, as long as the design is reasonable and the selection is appropriate, its service life can reach more than 30 years.

6. Low maintenance cost, no special person on duty, no mechanical transmission parts, simple operation and maintenance, stable operation, safe and reliable.

7, the installation and transportation is convenient, the photovoltaic module structure is simple, small size, light weight, short construction period, convenient for rapid transportation and installation and debugging of different environments.

8, modular design of energy storage system, flexible configuration, convenient installation. Each module of the energy storage system is 5kwh and can be expanded up to 30kwh.

9. Smart, friendly, safe and reliable. The energy storage equipment is equipped with intelligent monitoring (mobile phone APP monitoring software and computer monitoring software) and remote operation and maintenance platform to check the operating status and data of the equipment at any time.

10, multi-level battery safety management system, lightning protection system, fire protection system and thermal management system to ensure the safe operation of the system, multiple protection multiple protection.

11, affordable electricity. Due to the implementation of the time-of-use electricity price policy at this stage, the electricity price is divided into electricity prices according to the "peak, valley and flat" period, and the overall electricity price also shows a trend of "steady rise and gradual rise". The use of rooftop photovoltaic energy storage systems is not troubled by price increases.

12, ease the power limit pressure. Due to the continuous growth of the industrial economy, as well as the continuous high temperature, drought and water shortage in summer, hydropower generation is difficult, and electricity consumption has also increased, and there will be power shortages, power failures and power rationing in many areas. The use of rooftop photovoltaic energy storage systems will not have power outages, nor will it affect people's normal work and life.