Transpower is urging power companies to boost their electricity generation this evening, to reduce the risk of power cuts.
The lines company has asked the power companies to "ensure energy and reserve offers are accurate" and to increase that supply.
It's warning if there's not enough power in the network this evening, households may face outages.
The peak period is from 5pm to 7.30pm. If the situation worsens, Transpower could declare another grid emergency like it did on Thursday. And that could mean asking households to turn off some lights.
