To maintain the supply and demand balance of the power grid in a clean and efficient manner, the cost of carbon emissions from electricity consumption is considered in the power market and a market-oriented source load interactive trading environment is constructed. A carbon emission accounting model for electricity consumption, a coordinated electricity carbon market approach, a cost accounting method for carbon emissions from electricity consumption, and a response market profit analysis method are proposed for the participation of load entities in regulation and response trading. Through the coupling of elastic electricity prices, the unbalanced electricity quantity that needs to be regulated and responded to is analyzed, Realize the function of tracking, regulating, and adjusting settlement electricity prices in response to demand. The proposed electricity carbon market synergy mechanism and method have been verified through examples to couple unbalanced electricity consumption, change electricity consumption costs and carbon emission benefits, and incentivize load entities to participate in regulatory responses. This provides a market-oriented price control method and market return analysis method for incorporating load elastic resources into the scope of regulation, improving the economic and environmental benefits of regulation.