In Japan, it is often seen that many Japanese-style residential houses are covered with blue solar-powered battery modules. When the weather is fine, they are in harmony with the blue sky, silently telling people that solar power is entering the homes of ordinary people. According to statistics released by the Japan Solar Power Association, solar cell shipments in Japan's domestic market reached 991,192 kilowatts in 2010, doubling the chain for two consecutive years. Among them, the residential solar cell shipments were 803,700 kilowatts, an increase of 87.3% over the previous year. At the Osaka World Expo Memorial Park, there is a “Life Birth Hallâ€, which was once the office building of the 1970 Osaka World Expo. It is now a place to promote new life concepts and promote new lifestyles. The most striking feature in the pavilion is the residential model that combines solar power generation with fuel cell power generation. The text on the side reads “From energy use to energy-creating homes†and “dual-use power generation to achieve a low-carbon societyâ€. Less than 100 meters away from the "Life Birth Hall", there is also a demonstration residential area called "Thousand Miles Residential Park" for visitors to visit. There are 46 two- to three-story Japanese houses in the demonstration area. All the roofs are covered with solar panels. The purpose is to let people feel the low-carbon life and experience the harmony between man and nature. Knowing the benefits of solar-powered homes, environmentally conscious Japanese will start from me and make their own contribution to environmental protection when conditions permit. For this reason, solar-powered energy-efficient homes are increasingly favored in Japan. A male employee of a company in Osaka laid a solar cell template with a power of 3.4 kW on the roof in June last year. In addition, a heat collecting template using solar water was laid. When the weather is not good, I can't send electricity. This family of three also needs to buy electricity. From July last year to January this year, the electricity bill was 40,000 yen. However, since November 2009, the power company has implemented a “fixed-price purchase system†to purchase the remaining solar power of the home at a price double the ordinary electricity price. 56,000 yen, in addition to the cost of buying electricity, actually earned a net profit of 16,000 yen. Many real estate developers in Japan are developing energy-efficient homes. Sanyo HOM ES launched a residential building with a solar power system in 2008 and won the Ministry of Economy, Trade and Industry's New Energy Award. Sekisui H 0U SE sold 6,000 sets of solar-powered homes from February to December 2009. The solar cell formwork and roof integration are very beautiful and well received by buyers. The Japanese government has vigorously supported residential solar power generation and has taken various measures. The first is to subsidize the installation of solar cell modules in residential buildings. The solar-powered 1 kW device requires about 500,000 yen, and each family needs about 3 to 4 kW. In order to reduce the burden on the family, the Japanese government has subsidized 70,000 yen per kW of equipment since January 2009. In addition, various local government agencies have other subsidy systems. In 2012, the Japanese government will implement a new purchase system, and the scope of purchase will be expanded to include hydropower, wind power, and geothermal power. The second is to increase efforts to support scientific research and reduce the cost of solar power. In 2009, the solar power generation unit per kilowatt was 600,000 yen, and in 2010 it fell to more than 500,000 yen. The Japanese new energy industry technology development organization issued a white paper in July last year, saying that by 2020, the cost of solar power generation equipment is currently The foundation is reduced by half, making it more economical for each household to use solar power to completely clear the barriers to universal solar power generation. Solar homes are promising in Japan. According to the Ministry of Economy, Trade and Industry, by 2020, houses with solar cell modules will grow at a rate of 500,000 per year. By 2020, renewable energy will increase by 32 to 35 million kilowatts. CO2 emissions will be reduced by 1.8% to 2.2%, and the market size for producing solar power plants is expected to reach 10 trillion yen. More importantly, solar power generation is the strategic focus of Japan's economic growth. If it can maintain its world-leading level by improving its technology and reducing costs, it will occupy a more favorable position in the fiercely competitive global market.
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