In response to large amounts of global greenhouse gas emissions and the problem of excessive power generation under favorable power generation conditions and insufficient power generation under unfavorable power generation conditions in wind and solar power generations

this paper proposes a technology to integrate carbon dioxide capture and utilization with renewable energy power generation. This technology uses CO_2 captured by coal-fired power plants as the energy storage medium of renewable energy power plants

through CO_2 compression energy storage or CO_2 conversion into high-energy compounds such as formic acid. Also

CO_2 captured by coalfired power plants can be used as a heat transfer medium by geothermal energy production to achieve dual benefits of CO_2 utilization and CO_2 emission reduction. In a carbon dioxide capture and utilization-green energy power generation integration system

the operating state can be flexibly adjusted

so that the unit's net power output

power generation cost and carbon emissions can be regulated within a certain range to achieve maximum economic benefits. Carbon dioxide capture and utilization-renewable energy power generation integration technology effectively solves the challenge of excessive power generation by wind or solar power plants under favorable power generation conditions and insufficient power generation under unfavorable conditions. This technology simultaneously achieves peak shaving of wind or solar power plants and reduction of CO_2 emissions from coalfired power plants and has broad application prospects in China.