To　compensate　for　the　defects　of　the　air　source　heat　pump　at　low　temperatures,　we　propose　a　novel　solar-air　complementary　energy　system　for　buildings　that　included　an　energy　storage　feature.　This　system　uses　heat　released　by　the　water　solidification　process　as　a　low-temperature　heat　source　for　the　heat　pump,　while　utilizing　air　as　an　auxiliary　energy　source.　While　the　heat　storage　tank　supplies　the　building　during　the　day,　the　energy　in　the　ice　storage　tank　is　restored　by　collecting　photovoltaic　waste　heat　from　photovoltaic　photothermal　(PV/T)　modules　or　by　using　air　energy　to　melt　stored　ice.　This　study　evaluated　the　heating　performance　of　the　system　in　winter　by　analyzing　storage　and　release　of　heat　as　well　as　storage　and　melting　of　ice.　The　results　show　that　for　heat　storage　by　ice　mode,　the　average　coefficient　of　performance　(COP)　of　the　heat　pump　was　2.60　and　that　of　the　proposed　system　was　2.03.　For　ice　melting　by　solar　mode,　the　average　heat　collection　efficiency　of　the　PV/T　module　was　35.3%.　An　optimization　strategy　for　system　operation　was　provided,　and　the　economy　of　the　system　was　analyzed.　The　system　exhibited　good　operational　stability　and　reduced　the　peak　power　grid　load,　thus　providing　a　novel　energy　supply　solution　for　cold　regions.&　nbsp;