I ngā tau tata nei, hei whakautu i te mahana o te ao me te huringa āhuarangi i puta mai i ngā tukunga hau kati kōtuhi, kua arotahi ngā whenua nui ki te whakatairanga i ngā waka hiko hei whakakapi i ngā waka wahie tuku iho. Ā, he mea tino nui te hanganga o ngā pou utu i roto i te whakatairanga i ngā waka hiko hou. Nō reira, he maha ngā kaupapa pou utu kua puta ake puta noa i te ao.
Ko ngā mita pūngao AC, DC wāhanga kotahi me te wāhanga toru e tutuki ana i ngā paerewa IEC e rite ana, ā, ka taea te whakamahi i roto i ngā momo puranga utu AC me DC katoa hei whakatutuki i te ine i te pūngao utu, ā, ka taea te tuku i ngā tawhā hiko i te wā tūturu mā te whakawhitiwhiti kōrero.