As a stable low-carbon power source with adjustable control

the cost competitiveness of carbon capture

utilization and storage(CCUS) and renewable energy storage technologies in coal-fired power plants are worth further investigation. The learning curve model was adopted to explore competitiveness changes of the levelized cost of electricity(CLCOE) from 2020 to 2030. Furthermore

the CLCOE advantages in provinces that have solar and wind curtailment were also identified. The main results are as follows. At present

the coal-fired power plants with CCUS has a competitive advantage over renewable energy storage systems. If the coal-fired power plants with CCUS are difficult to develop rapidly

they will lose their CLCOE advantage compared with renewable energy storage technologies by 2028. By 2030

the carbon price being able to make coal-fired power plants with CCUS achieve grid parity will be 136～189 yuan/t

but as far as the current carbon price development trend is concerned

there are difficulties for coal-fired power plants with CCUS to achieve grid parity by relying on carbon price. Coal-fired power plants with CCUS could further expand their competitive advantage compared to solar photovoltaic energy storage technology by adjusting the operation hours in the provinces with solar curtailment; in the provinces with wind curtailment such as Hebei

Shanxi

Inner Mongolia

Liaoning

Jilin

Heilongjiang

Guizhou

Shaanxi

Ningxia

Gansu and Xinjiang

coal-fired power plants with CCUS have absolute CLCOE advantages compared with wind energy storage system under the existing conditions.