With　the　rapid　advancement　of　new　energy　sources,　the　integration　of　surplus　energy　from　both　the　generation　and　consumption　sides　has　emerged　as　a　key　focus　of　research.　In　response,　this　paper　proposes　an　approach　for　optimizing　the　day-ahead　economic　dispatch　of　a　shared　energy　storage　station　(SESS)　based　on　a　user　group.　Initially,　it　introduces　the　concept　of　a　SESS　along　with　its　operational　model.　Subsequently,　the　SESS　is　implemented　within　a　residential　user　group,　considering　the　users＇　utilization　of　electric　heating　and　participation　in　carbon　trading.　By　effectively　coordinating　the　charging　and　discharging　power　of　each　user　through　the　SESS,　the　paper　aims　to　achieve　the　optimal　daily　operational　cost　for　the　user　group.　Finally,　the　paper　conducts　a　case　simulation　involving　three　residential　users.　By　comparing　scenarios　where　users　independently　configure　energy　storage　with　those　where　users　utilize　shared　energy　storage,　the　study　concludes　that　the　introduction　of　a　SESS　can　significantly　reduce　the　daily　operational　costs　of　the　user　group.　©　2023　IEEE.