At the national policy on renewable energy introduced, many provinces and cities have also introduced a mandatory policy on the promotion of solar energy. At present, nearly half the country's provinces issued a mandatory installation policy, there is information suggesting that other provinces are in the pipeline. Where policy is mainly targeted at new construction, renovation and expansion projects, paint is the government invested projects, Lincang solar water heater project synchronize school hotel design, construction and final acceptance. 1, Lincang solar water heater works Hainan hotel school in 2006 you say, Hainan Construction Department issued the "Hainan Provincial Department of Construction on the promotion of the use of solar hot water systems and building integrated technology Notice" (Joan building "2006" 243 ). First proposed in the country since January 1, 2007, all new construction, renovation of the 12-storey residential buildings (including villas) and hotels, should promote the use of solar water heating systems and building integration technology. During the building design, and construction of solar hot water systems integration design, so that solar water heating systems and building engineering synchronous design, simultaneous construction and simultaneous acceptance, simultaneous delivery. 2. Jiangsu Province, Jiangsu Provincial Department of Construction "on the strengthening of solar hot water systems and application management,": Since January 1, 2008, the province's urban area and a new 12-storey residential new construction, renovation and expansion of the hotel, public buildings hotels, commercial and residential water demand, should be unified design and installation of solar hot water systems. 3. Hebei Hebei Construction Department issued a circular calling since January 1, 2008, within the scope of the province's new civil construction and renovation should actively using solar thermal, photovoltaic and shallow low-energy and other renewable energy application technology. The following high-rise residential buildings and hospitals, schools, hotels, swimming pools, public baths and other water guzzler concentrated solar hot water system to be used, and the integration of design, installation, 4. Lincang solar water heaters school hotel project in Liaoning Province, Liaoning Province Construction Department issued a "construction projects to promote solar energy and building integration technology," which notice requirements: construction units in new residential projects should encourage the use of solar water heaters and solar panels, to do with the housing body three synchronous: the synchronous design, simultaneous construction and simultaneous acceptance. Design units during solar water heaters, solar panels for size, pipe shafts, fixed embedded parts, system layout, electrical pipeline laying, construction drawings node practices included design elements, ensure that the building facade neat appearance, reasonable structure easy maintenance, use of safety. 5. Heilongjiang Province Lincang construction of solar water heaters school hotel room "on accelerating the application of solar hot water systems in the province building public notice": From October 1, 2007, all new construction of multi-storey residential building (including villas), you should first promote the use of solar hot water systems; high-rise, high-rise and other public buildings are encouraged to promote the use of solar hot water systems, conditional city can be gradually introduced in other areas of solar energy utilization.