To reduce carbon emissions is a new task of power industry in the new era of low-carbon economy. Considering the coal-dominated energy structure in China

it is necessary to conduct analysis on the effect of carbon emission and coal-supply constraints on generation expansion planning. Based on the analyses of the operational characteristics of carbon capture and storage (CCS) power plant

a low-carbon generation expansion planning model considering carbon emission and coal-supply constraints is formulated. Typical days are adopted in the model to check if the system has sufficient peak load regulation capacity. By taking a regional power system as an example

expansion planning of regular thermal power plant and CCS power plant is conducted in different scenarios of carbon emission constraints

renewable energy development and coal supply constraints. The results show that CCS power plant can adapt to the low-carbon emission target while providing regulation capacity for large-scale renewable energy development. This work is supported by State Grid Corporation of China.