Martin Lewis has urged a household with a £5,000 energy bill to see if they can get financial help of up to £750.
Energy bills are rising, and are due to increase by £693 a year for the average household from April 1.
The cost of the average variable rate energy bill, for the average household, is capped by regulator Ofgem.
That cap is rising from £1,277 a year to £1,971 on April 1, with further rises expected from October, in response to supply demands due to the war in Ukraine.
But many households are paying even more than that.
A caller to ITV's This Morning programme yesterday said her annual energy bill was estimated to be £5,000, as she has a son that needs a ventilator for 22 hours a day.
Speaking on the show, Lewis warned the caller, Marie, that this bill was going to get even more expensive.
"That's going to get bigger. I think we are at near-crisis stage for many people with disabilities and vulnerabilities at the moment. £5,000 is not an excessive bill compared to some of the people out there, it is going to get even higher."
"Intervention is absolutely critical."
Lewis, the founder of MoneySavingExpert, said that there is financial help out there for people struggling with their energy bills.
He added: "I would suggest you call someone like National Energy Action to see if there are any of the energy company trust funds that are available to help you out and there is anything you are missing out on in a one-on-one assessment of your situation."
National Energy Action is a charity that helps Brits with fuel poverty.
Many energy companies have launched hardship funds to help customers with rising fuel bills and associated debt.
For example, British Gas has one that gives those eligible up to £750 toward the cost of their energy bills.
Other grants include the Ovo Energy Fund, E.ON Energy Fund, Bulb Energy Fund and the EDF Energy Customer Support Fund.
British Gas launched the support in December, where it pledged £2million to the most struggling households.
Customers can apply for grants of between £250 and £750 to write off chunks of debt.
British Gas says the average payout per grant so far has been £510.
But British Gas customers should move quickly, as the scheme is due to end at 4pm today.
Energy providers can also set up payment plans to help customers with bills.
Elsewhere, the Warm Home Discount is available to some people on benefits with more information available at Citizens Advice. The scheme could help you take £140 off your bills.
Shelter also provides information to help people struggling to pay their energy bills - it can give more details of the Warm Home Discount and explain what you can get dependent on your particular circumstance.
Extra help
Anxieties about the cost of living are common and fears over how to look after your loved ones can take a toll on more than just a bank balance.
If you feel you need extra help, charities like mental health outfit Mind can be a great way to help with your wellbeing.
