In　recent　years,　with　the　continuous　promotion　of　clean　and　low-carbon　energy　strategy,　the　installed　capacity　of　renewable　energy　is　growing　rapidly,　and　the　proportion　of　renewable　energy　generation　in　the　system　keeps　increasing.　The　high　permeability,　the　randomness　and　volatility　of　renewable　energy　put　forward　higher　requirements　for　the　regulation　and　carrying　capacity　of　the　system.　On　the　basis　of　in-depth　analysis　of　the　characteristics　of　renewable　energy　generation,　this　paper　explores　the　complementary　potential　of　the　power　grid,　and　proposes　the　trading　mechanism　of　the　energy　pool　for　renewable　energy.　First,　the　trading　model　of　the　energy　pool　for　renewable　energy　is　established;　the　constraint　conditions　are　set;　and　the　trading　declaration　and　clearing　methods　are　given.　Then,　the　price　mechanism　considering　the　flexible　price　and　the　value　system　of　the　energy　pool　is　explored.　The　settlement　method　of　the　energy　pool　is　given.　Finally,　based　on　the　practice　of　renewable　energy　accommodation　in　Northwest　Power　Grid　of　China,　various　kinds　of　trading　practices　are　innovated　and　carried　out,　such　as　the　replacement　of　the　energy　pool　in　the　main　control　area,　the　energy　pool　in　Xinjiang　Autonomous　Region,　and　the　peak　shaving　and　replacement　of　the　energy　pool　between　Shaanxi　and　Qinghai　Provinces,　China.　The　actual　data　shows　that　the　energy　pool　mechanism　fully　demonstrates　the　value　of　system　regulation;　it　can　mobilize　the　flexible　adjustment　ability　of　the　system　to　stabilize　the　fluctuation　of　renewable　energy,　and　significantly　improve　the　level　of　renewable　energy　accommodation.　©　2021　Automation　of　Electric　Power　Systems　Press.