In order to respond to the green and low-carbon urban renewal proposed by the state, optimize the energy use structure of buildings, further expand the application of renewable energy in buildings, promote the comprehensive utilization of renewable energy such as solar energy, shallow geothermal energy and biomass energy in buildings, improve the engineering design level and construction organization of renewable energy utilization, and achieve advanced technology, economic and reasonable, safe and practical, resource saving and environmental friendly. And effectively guide the construction of renewable energy in the process of urban renewal, specify the guidelines. This guideline applies to the solar water heating system, solar photovoltaic system and small renewable energy application equipment and facilities added to existing buildings during the urban renewal process in Jiangsu Province, for the reference of design, construction, supervision and other relevant units and engineering and technical personnel.