Study On Energy Performance Contracting Of Energy Efficient Retrofit For Existing Public Buildings

With the rapid economic development,China's energy problem is getting worse.At present,China is the world's largest energy consumer,accounting for about 23% of global consumption.China's energy consumption is growing at 5% ~6% annual growth rate.In total energy consumption,existing energy consumption of buildings increased year by year,accounting for about 33 percent of the total energy consumption which is estimated in2020 will reach 108.9 billion tons of standard coal.Energy consumption of existing public buildings consumed in large quantities,low energy efficiency,energy saving can be obtained by a huge energy efficiency.Existing public building is the key area to promote building energy conservation.Our existing public buildings traditional energy-saving mode is the trinity of energy saving management mechanism by the government authorities,enterprise energy management and energy services is formed which results in government departments and enterprises of the financial pressure to some extent.But the Energy Performance Contracting(EPC)as a new energy efficient retrofit market-oriented mechanism can effectively break the traditional energy-saving mode and reduce government finances financial pressure and increase public buildings energy-saving owners enthusiasm.Therefore,it is very necessary to study on Energy Performance Contracting in the field of existing public building and even more important to analyze the key issues in application process.This paper introduces the theory of EPC,this part introduces the concept of EPC,EPC business model,focusing on the Specific operational processes as well as the development status of domestic and international EPC which made the future direction of EPC in our country.On the basis of introducing EPC theory analysis its necessity and feasibility.About necessity,it primarily from the three aspects to elaborate which are present situation of energy efficient retrofit of existing public buildings,the development of exiting public building energy services market and the transformation of government functions.About feasibility,it primarily from the three aspects to elaborate which are the success experience of EPC project at domestic and foreign existing public buildings huge energy saving potential and the supporting of government policies.This paper focuses on the key issues of the application of EPC which is in exiting public building : project finance and risk management.In the EPC project financing,it analysis the main reason of the financing difficulties:Information asymmetry exist between Energy Service Company(ESCO)and Financial Institutions and ESCO has low creditrating,and then analysis the limitations of traditional financing model in existing public construction.On this basis,we put forward innovative financing model:Asset securitization and O2 O model which is based on supply chain finance and Internet +,using asymmetric information dynamic game theory to analysis the theory feasibility of asset securitization which find a breakthrough in project financing difficulties.In the EPC project risk management,this paper proposes a quantitative analysis method which is based on qualitative analysis.Using risk evaluation method which is based on the combination of AHP and Fuzzy comprehensive,and provide the corresponding countermeasures.Finally,the article focuses on case studies.Case is mainly introduce specific operational processes and the content of the energy-saving projects.It focused on analyzing specific financing process and based on AHP and fuzzy comprehensive evaluation method to get the degree of risk of the project under normal circumstances can achieve significant energy-saving benefits.The key risk factors: risk financing,energy savings measurement accuracy of risk,customer credit risk,project risk management and so on.This paper focused on financing difficulties and the high risk which are the key aspects about EPC,it not only helps EPC which is applied to energy conservation in existing public buildings better,but also provide a very good reference for the future development of EPC in china.