It was a major coup for the company, in terms of its ability to manage risk in very dry years, chief executive Mark Binns said.
But while inflows to its lakes returned to normal, Meridian lost some of the benefit because the peak inflows coincided with periods, 27 days in all, when the HVDC link between the North and South Islands was down. As the work to upgrade Pole 3 of the link, due to be completed by May, will benefit Meridian by creating something close to a single national market for electricity, it is not complaining.
The big question mark hanging over Meridian, and the whole industry, is the future of the Tiwai Point aluminium smelter, Meridian's largest customer and the user of 14 per cent of national electricity output.
"All I can say is that we are currently still in negotiations with Rio Tinto," Binns said. "It is slow but it is definitely fair to say they have moved forward," he said.
New Zealand's demand for electricity remained subdued and in the case of industrial users had declined, Binns said.
The weak demand outlook has seen Meridian slim down its pipeline of generation projects. It is also looking at selling its half-share of the A$1 billion Macarthur wind farm in Victoria, Australia - a joint venture with AGL.