With the rapid escalation of carbon dioxide emissions

the contradiction between economy

environment and energy is becoming more and more prominent

and the power generation industry

as a typical carbon emission subject

is facing the urgent requirement of low-carbon transformation. A carbon capture power plant with power-togas (P2G) was constructed

and the economy-environment-energy (3E) comprehensive evaluation index system of the power plant was established by analyzing the 3E characteristics of the power plant. In order to obtain the relevant data of the 3E evaluation indices

a two-stage robust optimal scheduling model of the power plant was constructed and solved using the constraint generation algorithm. Furthermore

the combination assignment method and technique for order preference by similarity to an ideal solution (GRA-TOPSIS) were designed to form the 3E comprehensive evaluation model. Simulation analyses were carried out with actual data to verify that the carbon capture power plant with P2G has better integrated economic

environmental and energy benefits compared with the WTGPPCC system and the WT-GFPP system under the environment of the electricity-carbon market

and that the integrated benefits brought by the carbon capture

utilization and storage (CCUS) technology to the system are sufficient to compensate for its high operating cost

and that the proposed 3E integrated evaluation model has good applicability.