Iimodyuli zelanga, ezikwabizwa ngokuba ziipaneli zelanga, zenziwe ngeeseli ezininzi ze-photovoltaic (PV) ezithatha amandla elanga kwaye ziwaguqulele kumbane.Ezi seli ziqhele ukwenziwa ngesilicon okanye ezinye izinto zokwenziwa kwe-semiconducting, kwaye zisebenza ngokufunxa iifotoni ekukhanyeni kwelanga, ezikhupha ii-electron kwaye zenze umsinga wombane.Umbane owenziwe ngeemodyuli zelanga luhlobo oluthile lwangoku (DC), olunokuguqulwa lube yi-alternating current (AC) usebenzisa i-inverters ukwenzela ukuba isetyenziswe kumakhaya nakumashishini.