Japan has paid more attention to the energy crisis after the 311 earthquake, and energy conservation has become a major focus in its policy development. The Japanese government believes that solving energy problems must start from both supply (power generation) and demand (use), and will focus on development in terms of supply. Renewable energy power generation, on the demand side, promotes the popularization of energy-saving appliances such as LED lighting. Digital currency transactions allow users to convert existing digital currencies into other digital currencies. The entire transaction does not involve any legal tender. Because of the relatively loose regulation, the mainstream digital currency trading platform also opened this function.Digital Asset Exchange (DAE) is a platform for matching transactions between digital currencies, digital currencies and legal currencies. It is the main place for encrypting the circulation and price determination of digital currency transactions. Currency Exchange,Digital Currency Exchange,Virtual Digital Currency Exchange,Display Currency Exchange China youbi digital assets limited , https://www.ubcoinchina.com
Ten power companies in different parts of Japan have also jointly adjusted the street lamp electricity bill to reduce the electricity cost per watt when the power consumption is not high. The purpose is to encourage all units to switch to LED road lighting. In 2011, the proportion of national road lighting LEDs in Japan was about 10%, expecting to speed up the replacement of LED lighting after the implementation of the new electricity bill.
According to a survey conducted by a research institute, the comprehensive conversion to LED lighting can save electricity equivalent to 13 nuclear power plants in Japan, and the potential for power saving is amazing. Among them, the energy-saving effect of business lighting is the best, and the Japanese government is currently lighting LED lighting. The subsidies are also mainly for SMEs and public facilities.
The LED lighting in Japan is also combined with the development of green buildings. Buildings reconstructed in the disaster areas after the 311 earthquake are the first to install energy-saving appliances such as home energy management systems and LED lighting, and expect to expand to other new buildings in the future. The Japanese government aims to install energy management systems for all buildings in 2025, and to switch to next-generation lighting such as LEDs or OLEDs in 2030, and to complete zero-carbon construction in 2050. 
Compared with traditional stock exchanges, digital asset trading platform not only matches transactions, but also plays the role of market maker and investment bank. The role of the market maker in the trading platform can increase the liquidity of the market, and the trading platform can earn the transaction price difference. The role of the investment bank of the trading platform is to provide services such as issuance and underwriting of digital currency, from which the trading platform collects money fees, or collects deposits in the form of community voting of the trading platform.