Ofgem chief executive Jonathan Brearley said: "We know people are struggling with the wider cost of living challenges and I can't offer any certainty that things will ease this winter."
Asked about families being concerned they will again struggle to pay their bills this winter, he said the government was working "night and day to ensure the money in people's pockets goes further".
"Typical households are still facing sky-high energy costs, now that support schemes have come to an end," said Gillian Cooper, from Citizens Advice.
Jay Cross, who runs a barbers shop, said he and his wife Andrea found their direct debits were failing to cover their bills last year.
Here are some energy saving ideas from environmental scientist Angela Terry, who set up One Home, a social enterprise that shares green, money-saving tips:
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Ah yes, shift the focus onto the individual rather than the profiteering polluting energy companies.
I'd rather have cheaper renewable energy, warmth and comfort, than wear hat, gloves, thermals multiple layers, and sit in a sleep bag in my own living room.
I said the price increase changed behaviour. It's reduced fossil fuel usage. I only care about net results. If you're cold, go for a run. It'll help reduce stress on the NHS
Renewables are only economically viable because the cost of power is paid on the last generator, which is natural gas.
So higher gas prices make renewables a more efficient use of capital and justify the capex
People were just not putting their heating on in the winter. It's unhealthy at best, dangerous at worst and allows your home to get damp. I was honestly miserable last winter without heating.
You can thank the Tories for that. Other countries imposed a cost cap. UK, Netherlands and I think Belgium didn't and used benefits to offset with differing levels of effectiveness.