Research On The Investment Value Of Household Rooftop Distributed Photovoltaic Power Generation Under Carbon Trading Mode

Since 2006,China has implemented the "Renewable Energy Law of the People’s Republic of China" to encourage and stimulate the development of renewable energy.Since then,the solar photovoltaic power generation capacity has increased significantly.Since 2013,China’s solar energy industry has become the world’s largest new installed photovoltaic application market,but at present,the scale of household PV installations in China accounts for a small proportion of the total installed capacity of PV in the country.For China,a populous country,the family rooftop resources are very abundant.Therefore,household rooftop distributed PV power generation should play an important role in the development of distributed PV.In December 2017,the National Development and Reform Commission issued the “ Trading Market Construction Plan of National Carbon Emissions(Power Generation Industry)”,marking the official launch of the national unified carbon emission market.However,the average carbon price level of the eight carbon trading pilots is low,and the carbon trading income for PV users in China to participate in carbon trading is less.How to increase the investment value of household rooftop distributed photovoltaic power generation projects by adjusting the carbon price and stimulate residents to invest in rooftop PV has become an important issue for the healthy and stable development of household PV.Therefore,this article studies the investment value of household rooftop distributed PV power generation under carbon trading mode.On the one hand,it provides opinions on the adjustment of China’s carbon price level and policies,and on the other hand,it also provides a reference for investors in household rooftop distributed PV power generation projects to make investment decisions.Considering that most of the related researches focus on the analysis of economic or environmental benefit,and most of them use qualitative analysis when analyzing the environmental benefit of the project,the quantitative analysis of environmental benefit has often been ignored.In 2018,10 household PV power stations in Zhongshan City,Guangdong Province,gained profits through carbon trading,opening up the way for China’s household rooftop distributed PV to participate in carbon trading.Therefore,this paper firstly takes Zhongshan City as an example and combines existing theories.The indicators used in this study to assess the investment value of household rooftop distributed PV power generation projects are the net present value(NPV)and internal rate of return(IRR)which are very common in domestic and foreign researches.The results show that the current level of carbon price in Guangdong Province is not enough to promote residents’ investment in rooftop PV,but carbon trading has increased the investment value of the project to a certain extent.Therefore,in order to make the research results more convincing,the article expands the scope of the study to eight representative cities of carbon trading pilots,and further studies the impact of carbon price on the investment value of household rooftop PV power generation projects.The research results show that carbon trading income can increase the investment value of household rooftop distributed PV power generation projects,and the higher the carbon price level,the greater the increasing of investment value.As the carbon price increases,the level of government subsidy required is gradually declining.In addition,in order to promote investment from residents,this paper puts forward the following three conclusions and policy suggestions: firstly,the government should encourage the carbon trading mode and raise the carbon price level in China;secondly,local governments can adjust the carbon price level of various places according to the local solar energy resources;finally,China should actively guide household rooftop distributed PV to develop itself into a market-oriented development mode through carbon trading that need no subsidy any more.This article studies how to increase the investment value of China’s household rooftop PV power generation projects from a newer carbon trading market perspective,with a view to providing a certain reference for future related research.