Cloud　and　edge　computing　are　gradually　used　to　achieve　complex　energy　operation　control　and　massive　information　processing　in　conventional　power　grid.　Meanwhile,　with　the　tremendous　number　of　distributed　energy　resources　and　power　equipment　integrated　into　the　smart　grid　enabled　by　cloud　and　edge　computing,　the　centralized　distribution　network　cannot　realize　the　flexible　and　realtime　energy　supply　due　to　the　unpredictable　and　wide　distribution　of　distributed　energy　resources,　which　will　further　deteriorate　the　stability　of　smart　grid.　To　solve　those　problems,　this　article　proposes　energy　centric　smart　grid　to　achieve　power　dispatching　with　the　help　of　cloud-edge　computing.　Our　solution　uses　energy　caching　and　energy　multiple　addressing　of　the　edge　router　to　eliminate　the　intermittency　of　renewables　and　speed　up　energy　response.　For　the　stability　of　energy　market　and　to　encourage　users　to　participate　in　power　dispatching,　a　cloud-edge　computing-driven　energy　cache　orchestration　mechanism　is　designed.　The　empirical　results　show　that　the　response　time　is　greatly　reduced　to　meet　the　stringent　quality　of　service　requirement　in　smart　grid　integrated　with　distributed　energy　resources.