Rooftop　photovoltaic　(PV)　system,　as　part　of　the　renewable　energy　development　strategy　to　guarantee　energy　security　and　reduce　greenhouse　gas　emissions　in　urban　areas,　has　received　a　lot　of　attention　during　the　last　decade.　To　provide　an　up-to-date　and　systematic　research　landscape　of　the　rooftop　PV　field,　this　study　conducted　the　bibliometric　analysis,　collaboration　network　analysis,　co-citation　analysis,　and　hotspots　detection　based　on　595　articles　collected　from　the　core　collection　database　of　Web　of　Science.　The　results　showed　that　the　number　of　publications　per　year　in　this　field　has　increased　steadily　since　2015.　The　USA　was　the　most　important　contributor　in　this　research　field　in　terms　of　quantity　(number　of　publications)　and　impact　(number　of　citations).　The　co-authorship　communities　were　obtained　by　collaboration　network　analysis,　and　the　international　collaboration　is　expected　to　be　further　strengthened　according　to　the　research　focuses　of　each　community.　The　key　knowledge　base　and　the　main　hot　topics　of　the　rooftop　PV　research　field　were　identified　from　co-citation　analysis　and　keywords　co-occurrence　network.　Furthermore,　based　on　the　literature　review,　a　detailed　analysis　of　the　main　topics　was　provided　for　a　better　understanding　of　the　current　research　trends　and　opportunities.　This　study　can　be　served　as　a　strategic　review　of　the　rooftop　PV　field　to　help　relevant　researchers　carry　out　in-depth　research　in　the　future.　(c)　2021　Elsevier　B.V.　All　rights　reserved.