Abstract: This paper takes the “PV+ distributed economy” model as the research object, aiming at exploring its economic spillover value. The article firstly clarifies the significance of studying the economic spillover value of this model, and analyzes the composition of the economic spillover value. Then, based on microeconomics theories such as utility function and demand function, the economic spillover value assessment model of “PV+ distributed economy” model is constructed. Finally, we take “PV+ Agriculture” as an example for quantitative analysis to verify the feasibility of the model. The contribution of this paper lies in: (1) proposing the existence of economic spillover value of “PV+ distributed economy” model; (2) revealing the composition of the spillover value from the essential attributes of distributed economy and proposing the method of quantitatively calculating the economic spillover value; (3) analyzing the economic spillover value of the model; (4) analyzing the economic spillover value of the model; and (5) analyzing the economic spillover value of “PV+ distributed economy” model. (3) analyzes three possible scenarios of the economic spillover value of the “PV+ distributed economy” model, and discusses the relationship between the spillover value and the local adoption of the “PV+” model for the consumption of distributed PV.