Professional analysis, is there a development prospect for home solar power generation?

At present, the household solar photovoltaic power generation system is mainly used to electrify people who have no electricity and lack electricity. In the west of China, including Tibet, Guizhou, Gansu, Inner Mongolia, Qinghai, Xinjiang and Sichuan, most inhabited islands in China are about 15- 100 km away from the coastline, mainly distributed in Zhejiang, Fujian and Guangdong provinces, some in Shandong and Liaoning, and the rest in Hainan Province of China, Taiwan Province Province of China and Guangxi. Now some islands use diesel to generate electricity, but because of the high transportation cost, the electricity price is very high and the supply time is very short. In some places, candles and kerosene lamps are used for lighting, while in others, batteries are used. The lack of electricity and electrodes greatly restricts the local economic development. On the other hand, the western provinces and coastal islands of China are rich in solar energy resources, and most of them can use renewable energy which is both environmentally friendly and economical to solve the problem of electricity consumption.

By the end of 2005, about 750,000 household solar photovoltaic power generation systems had entered users' homes. Most of these users are herdsmen's families in pastoral areas, and the power supply level of these families is still relatively low, which can only meet the basic lighting needs. In addition, there are farmers and beekeepers in forest areas and agricultural areas, and small units such as roads, schools and shops without electricity make users use solar photovoltaic power generation systems, and urban residents in some areas without electricity have also become users of household solar photovoltaic power generation systems. If the number of these household solar photovoltaic power generation systems is calculated as 80%, and the photovoltaic power stations of the National Bright Project and the Power Transmission to the Countryside Project are added, at least 1 10,000 households in China currently rely mainly on photovoltaic power generation systems to meet their basic lighting needs.

By the end of 2005, the cumulative installed capacity of photovoltaic power generation market in China has reached 70MW, of which about 43% is used for rural power construction, and about 3 million households in China have no electricity. It is estimated that at least 6.5438+0.5 million households will need to adopt photovoltaic or wind-solar hybrid power generation system in the next decade. Due to the limitation of living conditions, most of them can only use decentralized power supply, that is, household solar photovoltaic power generation system. And many users who have already used photovoltaic systems will also upgrade and improve their electricity consumption level. Therefore, the photovoltaic market in China still has great potential.

In densely populated cities, photovoltaic power generation systems are also playing an increasingly important role. In 2006, the first draft of "Shanghai 654.38+100000 solar roof plan" was completed. According to the plan, there will be 654.38+million roofs in Shanghai in the future, which will generate at least 430 million kWh of electricity every year. This is of course good news for Shanghai, which is short of electricity. "China lacks energy, and we can't live up to the big sun overhead." This is the appeal of Professor Cui Rongqiang, the host of "Shanghai 654.38+ Million Solar Roof Project" and director of the Solar Energy Research Institute of Shanghai Jiaotong University. Facing the imminent energy crisis, solar energy is favored by energy experts all over the world because of its clean, efficient and inexhaustible characteristics, and is called "golden electricity" by people in the industry. Shanghai, without oil fields and coal mines, has a roof of 200 million square meters. As long as there is sunshine every day, every roof will be a small green power plant. In Shanghai, a huge "power plant" can be built by combining roofs and building facades. With 1.5% of the existing 200 million square meters of flat roofs in Shanghai, that is,100000 roofs (about 3 million square meters), the solar grid-connected roof photovoltaic power generation system can generate at least 430 million kWh per year, which will greatly alleviate the power shortage in Shanghai.