Also, I think that approximately 10% of NZ's electricity is used by a single aluminum smelter on the South Island.  Bauxite arrives on ships, is processed at dockside, and refined aluminum goes out.  If they have enough transmission capacity to move the electricity northwards, then closing this plant would help a lot.

It is disconcerting to realize that the imminent energy crisis will hit their export sector first.  But then, both of these plants are owned by foreign companies, and I don't know how much of the actually profit stays in NZ.