Tātaitai Rahi Pāmu Wera

Ka rere ngā utu whakahaere pāmu mahana i Aotearoa e ai ki te āhuru o te pūnaha (COP), te rahinga o te wāhi e whakamāhorahia ana, tōu rēti hiko, me te maha o ngā hāora ia rā e whakahaere ana. Hei aratohu noa, ko tētahi pāmu mahana 2.5 kW noa me tētahi COP 4 ka whakamahi tata 0.6–0.7 kW hiko ia hāora, ka utu tata $0.20–0.25/hāora i tētahi rēti toharite o 35 heneti/kWh. Mō tētahi whakamahinga 6-hāora-ia-rā i te wā hotoke, rite tonu ko te tata $1.20–1.50/rā, $180–225 rānei i roto i tētahi hotoke toru-marama. Ko ngā pūnaha nui ake (5–7 kW) mō te whakamahana kāinga katoa ka utu $2–4/hāora. Ka taea te heke i ngā utu whakahaere mā te whakamahi i tētahi taima, te tūtū i tētahi mahana ōrite, me te whakaū i te whare kua tino perehia. Puna: EECA Energywise — Heating (energywise.govt.nz).

Ko te Tauine Mahi (COP) tētahi ine o te āhuru o tētahi pāmu mahana — ka kī atu ki a koe e hia ngā wāhanga kaha mahana ka puta mai i te pāmu mahana mō ia wāhanga hiko ka kaihokohia. Hei tauira, ko tētahi pāmu mahana he COP 4 ka puta 4 kWh mahana mō ia 1 kWh hiko i whakamahia, nō reira he 400% āhuru. Ko ngā pāmu mahana ōnaianei o Aotearoa he COP noa i waenga 3 ki te 5 i ngā āhuatanga whakamātautau paerewa, ahakoa ka rerekē ngā mahi ā-ao me te mahana ā-waho (ka heke ngā COP i ngā rangi hūpē rawa). Ka whakaritea ki tētahi karawhiti hiko paerewa he COP 1 (100% āhuru). Ko te COP teitei ake ko ngā utu whakahaere iti ake: ko tētahi pāmu mahana COP 4 ka utu tata kotahi-o-whā o tētahi karawhiti karawhiti hiko mō taua pūtanga mahana anō. Rapua te tohu Energy Star inā hoko ana. Puna: EECA Energywise (energywise.govt.nz).

Ka rerekē ngā utu hiko o Aotearoa mā te rohe, kaiwhakarato, me te momo mahere. I te tau 2024–25, ko te utu hiko noho toharite tata 30–38 heneti ia kilowhati-hāora (kWh) tae atu ki te GST, ko te toharite ā-motu tata 33–35 heneti/kWh. He teitei ake noa ngā utu i Te Waipounamu (ōrite rawa ki Westland me Otago), he iti ake i ngā rohe huhua-hinu-wai. Ko Tāmaki Makaurau me Te Whanganui-ā-Tara ka tūāpono noho tata ki te toharite ā-motu. Ka tāpiri ngā utu raina tūāmuri $1.50–2.50 ia rā ahakoa te whakamahinga. Ka hoatu ētahi kaiwhakarato i ngā utu-wā-whakamahi me ngā rēti pō iti ake (hei tauira, 15–20 heneti/kWh) e hāngai ana ki te utu EV. Ko te nuinga o te hiko o Aotearoa he huri-anō (tata 85% hiko-wai, hau, me te whakaaro-nui-o-te-whenua), ahakoa ka rerekē ngā utu maketī ā-tau. Ka taea te whakataurite i ngā mahere mā Powerswitch (powerswitch.org.nz) hei heke $200–600/tau i ngā pire. Puna: Electricity Authority — Powerswitch (powerswitch.org.nz).

Ka kiia whānui ko ngā pāmu mahana te kōwhiringa whakamahana utu-hua rawa atu mō te nuinga o ngā kāinga o Aotearoa. Ka whakaritea ki ērā atu tikanga whakamahana noa: ko tētahi karawhiti hiko aukati paerewa (karawhiti tāhei, karawhiti papa rānei) he COP 1, nō reira ko ngā utu whakahaere ko ngā 3–5 ngā wā teitei ake i tētahi pāmu mahana. Ko ngā utu whakamahana LPG poutapeta tata $3–5 ia hāora mō tētahi karawhiti neke noa — nui ake i te nuinga o ngā pāmu mahana. Ko te whakamahana ā-aho koha (reretahanga) hiko-au tata $2–4/hāora engari ko ētahi tāone o Aotearoa anake e wātea ana, ā ka puta ngā utu hono me ngā taputapu. Ka homai ngā tahu wahie i ngā wahie iti utu engari ka hiahia rāhui wahie haere tonu, ā kāore e whakamahana tōtika i ngā rūma motuhake. Ka homai anō ngā pāmu mahana i te whakamāhoe i ngā raumati ki ngā utu iti. Ka tuku te hōtaka Warmer Kiwi Homes a te kāwanatanga o Aotearoa i ngā tūru pāmu mahana utu-heke mō ngā kainoho kāinga moni-iti e tika ana. Puna: EECA Energywise — Heating Comparison (energywise.govt.nz).