A game-theoretic model for retail companies under the spread-rebate mechanism

This paper presents a bidding model based on a two-stage electricity market structure to solve the bidding difficulties which emerging retail companies would face under the Spread-Rebate mechanism. In order to increase the market efficiency while reduce the risk of retailers, a general retailer agent, surrogate for all retailers, is modeled as the only buyer in the market who distributes the spread tariff among retailers after market clearing. In the upper stage, a bilateral Bayesian game model with asymmetric information between the generation companies and the general retailer agent is structured, whereas in the lower stage, a decision-making model with demand side elasticity for retail companies is built. Finally, an illustrative simple example is given to demonstrate the viability and effectiveness of the proposed method.