The Federal and NSW governments have banded together to help aid consumers shop around for better energy deal, but it may actually lift their power bills.

The two governments will push the Australian Energy Market Commission (AEMC) to create new rules forcing energy retailers to notify their customers of any upcoming power price increases before they occur, giving customers enough time to look for better deals.

The government push is designed to lower household's power bills - but critics warn it could have the opposite effect.

Federal Energy Minister Josh Frydenberg said the focus is on driving down power costs. The move follows rules requiring electricity retailers to notify customers when their energy discounts are ending.

“Currently, retailers don’t have to inform customers of price changes until their next bill, which can be months after the price change has occurred – meaning customers can be paying more than they thought without being aware of it,” Mr Frydenberg said.