In the environment of discrimination in the feed-in tariff

the joint operation in cluster of photovoltaic(PV)prosumers could be more beneficial than the independent operation. In order to enable multi economic entities trade inside the cluster

a day-ahead pricing model based on supply and demand ratio(SDR)of shared PV energy is proposed. Considering the factors of economy and comfort

an effective cost model of the PV prosumers is proposed

which enables the PV prosumers participate in the demand response(DR). As the internal prices are coupled with total power demand and supply in the cluster

the DR action of PV prosumers are formulated as a non-cooperative game. The existence of Nash equilibrium is proved

and a distributed optimization algorithm is designed to solve the Nash equilibrium strategy. Finally

via a practical example

the effectiveness of these models is verified in terms of saving PV prosumers' costs and improves the sharing of the PV power. This work is supported by National High Technology Research and Development Program of China(863 Program)(No. 2014AA052001)and China Southern Power Grid Company Limited(No. K-KY2014-009).