Press Release – Make Lemonade Otautahi – The Manapuri electricity supplied to the Tiwai Pt smelter near Bluff falls back into the hand of all New Zealanders to provide green and cheap power from 2024. Or will it? An Australian businessman is considering using the aluminium smelter … Otautahi – The Manapōuri electricity supplied to the Tiwai Pt smelter near Bluff falls back into the hand of all New Zealanders to provide green and cheap power from 2024. Or will it? An Australian businessman is considering using the aluminium smelter site and Manapōuri electricity for hydrogen production. Australian billionaire Dr Andrew Forrest has reportedly considered the aluminium smelter site at for hydrogen production, probably for export.