To　lower　environmental-based　operation　costs,　many　literatures　studied　the　relationship　between　the　energy　generation　side　(EGS)　and　building　load　(BL)　demand　side　based　on　solar-based　integrated　energy　systems　(SIESs),　without　directly　considering　the　effect　of　energy　from　energy　transportation　and　storage　side　(ETSS)　on　BL　demand,　which　may　result　in　waste　of　solar　energy　extracted.　To　enhance　energy　utilization,　this　study　proposed　an　analysis　method　that　renewable　energy　source　shares　among　different　buildings　was　investigated　based　on　the　supply　relationship　between　energy　from　the　ETSS　side　and　BL　demand　side.　ETSS　included　an　electric　boiler/chiller　(EB/C),　double-effect　absorption　heat　pump　(AHP)　and　tank.　According　to　the　energy　sources　from　ETSS　and　building　loads　for　a　hotel,　a　residence　and　a　hospital　on　a　heating/cooling　day.　The　proposed　analysis　method　was　used　to　develop　the　potential　of　available　renewable　energy　through　energy　sharing　from　the　perspective　of　the　energy　consumption　differences　of　the　three　buildings.　The　results　presented　that　the　potential　of　renewable　energy　utilization　was　further　developed　by　reasonably　operating　the　use　and　storage　of　energy　sources　from　ETSS　based　on　the　optimization　between　energy　sources　from　EGS　and　building　loads.　Energy　source　shares　among　different　buildings　with　different　energy　consumption　characteristics　enhanced　energy　efficiency　according　to　reasonably　change　the　useable　time　of　energy　sources　from　tanks.　When　a　building　required　a　large　number　of　energy　sources,　the　buildings　with　low　energy　consumption　directly　shared　renewable　energy　without　considering　the　use　of　energy　storage.　This　study　can　provide　a　reference　for　optimizing　the　design　of　integrated　energy　system　(IES)-based　architecture　with　different　building　loads.