But she repeatedly refused to provide details about the type of direct financial support Britons will receive, continuing a reluctance to provide specifics on the issue throughout the contest.
Ms Truss told BBC One’s Sunday with Laura Kuenssberg program: “I will act if I’m elected as prime minister. I will act immediately on bills and on energy supply because I think those two things go hand in hand.
“We need to deal with the immediate problem, we need to help people. We need to help businesses. But we also need to sort out the supply issues.”
Pushed on whether she would rule out an overall freeze on energy bills – a policy proposed by the Labour Party – Ms Truss declined to do so.
“I’m not going to go into details of what a putative announcement would be before because I think it would be wrong to do that,” she said in response.
Pushed on whether she was being “coy” over her plans, Ms Truss responded: “I’m not being coy. What I’m being very clear about is that I would act immediately, within a week. I understand what people are facing on energy bills. This is vital for people, it’s vital for our economy, that we sort this problem out.”
The energy price cap for the average household is set to rise to £3,549 a year from October, a jump of around 80 per cent from the current cap of £1,971. Businesses are not covered by the cap, meaning they could see bills rise even higher.
Sir Keir Starmer, the Labour leader, has proposed freezing household energy bills at the current cap level for the winter. He estimated the total cost to the Treasury at £29 billion.
Critics of the approach have said if energy prices remain high beyond this winter and the freeze had to be extended then the policy could cost billions of pounds more than those estimates.