Conclusions and policy implications
This paper introduces the concept of carbon assets into distributed photovoltaic generation and applies the method of carbon asset valuation to it. This paper also analyzes the influencing factors and their sensitivities for the carbon value of distributed photovoltaic generation. The study develops the theory of carbon asset valuation and applies it to assessing of the carbon asset value of distributed photovoltaic generation. Moreover, it adds to the knowledge base regarding the social, environmental and economic value of distributed photovoltaic generation. The specific conclusions are as follows:
First, the concept of carbon assets and its valuation method, which has been used to study the extra value of forest systems, traditional electricity markets and bank credit, can also be applied to distributed photovoltaic generation. Because distributed photovoltaic generation emits little carbon dioxide in its power production process, there are advantages with regard to carbon reduction, particularly compared with traditional power generation methods such as centralized coal, petroleum or thermal power generation, which means that distributed photovoltaic generation has carbon asset value.
Second, according to the valuation model in our analysis, the carbon asset value of distributed photovoltaic generation is dependent on the carbon emissions reduction per unit of generation, the generation capacity and the public price of carbon. The carbon emissions reduction provided by distributed photovoltaic generation is determined by the carbon emissions of solar power generation minus a benchmark, which is partly a result of the carbon emissions levels of other energy-generation methods other than distributed photovoltaic generation. The generation capacity fluctuates based on the uncertainty of solar radiation and the conversion efficiency. Because fluctuations in the carbon emissions market occur frequently, the carbon price causes the carbon assets of distributed photovoltaic generation to change in a timely manner and to have public value.