As　global　climate　change　intensifies　and　energy　crises　deepen,　photovoltaic　(PV)　applications　in　cities　are　increasingly　garnering　attention　worldwide.　In　this　context,　retrofitting　existing　high-density　residential　areas　with　PV　applications　is　becoming　a　focus　of　urban　low-carbon　development.　As　the　most　densely　populated　city　in　Western　China,　Chengdu　is　characterized　by　rapid　development　and　high　energy　consumption.　The　widespread　application　of　photovoltaic　(PV)　systems　could　significantly　alleviate　its　energy　consumption　issues.　This　research　investigated　the　PV　application　potentials　of　27　non-residential　areas　in　high-density　residential　areas　in　Chengdu,　Sichuan　Province　from　a　design　perspective　and　proposed　design　recommendations　for　PV　applications　in　these　spaces.　In　addition,　this　study　analyzed　urban　morphological　factors　affecting　the　PV　generation　potential　in　non-residential　areas　through　a　Pearson　correlation.　The　key　factors　influencing　the　PV　application　potential　in　these　areas　were　building　density　(BD),　non-residential　area　perimeter-to-area　ratio　(NBPAR),　and　maximum　building　height　(Hmax).　This　research　aims　to　provide　new　strategies　and　methods　for　the　low-carbon　transformation　of　future　urban　high-density　residential　areas.　©　2025　by　the　authors.