| With the development of the economic, there are increasing in the industry, traffic and energy efficiency in buildings. The production of energy efficiency doesn't keep up with the development of the economic in our country. Energy Shortage is the bottleneck restrict in developing the economic and improving the standard of living. Energy efficiency in buildings is about 30%～40% of the whole energy consumption. The actualization of energy saving in buildings is great significance in protecting the entironments and realizing sustainable development of the society.In this paper, author expounds the importance of the sustainable exploitation and energy saving, of enhancement of energy using efficiency and of reduction the environmental contamination using fossil energy. Author researches of energy saving actuality in the U.S and Japan, in order to use good qualities for reference; Author also researches of energy consumption in China, and the inside contact with the policy, technique and the market of energy saving in buildings.So, author puts forward incentive policy of the investors of energy saving buildings and the suppliers of energy saving products, tax policy of adjusting the energy products and protecting the entironments. The using prospect of new and renewable energy also is expounded. The methods of theory analysis and engineering cases comparison are used. There are a series of methods and technological measures of energy saving in existing buildings and new energy exploitation in this paper.Author values the investment benefit and the effect of energy saving in buildings. So it is very necessary and important of constituting the evaluation system. Through the market of healthy energy saving in buildings, the incentive policy and the technology of energy saving, it can stimulate the investors and requirement of the energy saving. In this paper, author intends to resolve the problem that energy saving in buildings and renewable energy are be accepted and invested.
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