Campaigners say many households are still struggling to pay bills, as well as repay energy debt that built up during a period of high prices.
Simon Francis, coordinator of the End Fuel Poverty Coalition, said this would mean another winter of high prices.
“The average family still paying hundreds of pounds more than they did just a few years ago,” he said.
Families enjoying chips at New Brighton, Merseyside, may have been making the most of the sunshine, but the cost of living still looms large.
“At the moment, it’s been ok, but I think the winter might be a different story,” said Elisha, who has an 11-week-old baby, Theo.
The consumer group Which? said it could be a good time to shop around for a fixed-price deal, but billpayers should be alert to exit fees.
“Some contracts charge large fees to leave early, which would cancel out any savings,” said Emily Seymour, from Which?.
