Concerns bad investment choices in electricity generation will keep our supply unreliable.
Tiwai Point aluminium smelter is ramping up production reversing previous restrictions, to ease winter supply concerns.
Meridian Energy says the hydro storage is looking much healthier this winter.
Major Electricity Users' Group Chair John Harbord told Mike Hosking restrictions will likely be back in force next winter, without investment in firmer electricity supply like geothermal and hydro plants.
He says solar panels only generate electricity 25% of the time and wind turbines only create energy 40% of the time.
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Mark the Week: The Covid report tells us what we already knew
02:09

Mike's Minute: My observations on week two of the war
01:51

Richard Arnold: US Correspondent on the conflict in Iran, release of oil barrels to combat spiking prices
04:54