Businesses are being hit by massive power bill rises as dry weather and a natural gas shortage wreak havoc in the electricity market.
Hundreds of thousands of dollars in extra costs are hitting firms as they look to renew fixed power contracts.
One manufacturer RNZ spoke to is trapped on the expensive and unpredictable spot market as it struggles to fix a deal.
Grocer Foodstuff's is warning it is doing all it can to prevent passing costs on to customers.
Business reporter Nicholas Pointon has the story.