The Utilities Dispute service is welcoming changes to power rules

The Electricity Authority's new rules, which kick in from October 30, will force power companies to simplify their bills and tell customers if they're on the best plan they provide.

It will also mean power companies could only send backdated bills once every six months.

Utilities Dispute Commissioner Neil Mallon says it won't just benefit customers.

He says it will lead to fewer complaints and make it easier to resolve complaints.