The winter season means higher power bills will impact Kiwi households, but the Electricity Authority has promised changes are on the way.

The nation's largest power companies will be required to offer 'time of use' plans that make it cheaper to use power at off-peak times.

Electricity Authority Chair Anna Kominik says there's no silver bullet for bringing prices down, but these changes are important for the sector's future. 

"Basically, we'll make sure that cheaper off-peak power and most New Zealand households can access a pricing plan that gives them a cheaper rate for electricity use during off-peak hours." 

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