Britain’s Liz Truss has promised to take action to deal with surging energy costs after winning the Tory leadership contest to become the next PM.
In a poll of party members, the foreign secretary defeated rival Rishi Sunak with 57 per cent of the votes to his 43 per cent, a narrower margin than expected, reports BBC.
She will succeed Boris Johnson on Tuesday after being formally appointed by the Queen.
The 47-year-old will become the UK's third woman prime minister.
In her victory speech, she promised to deliver on the party's 2019 election promises and defeat Labour at a general election in 2024.
She paid tribute to her "friend" Mr Johnson, adding he would be "admired from Kyiv to Carlisle" for his record in office.
"Boris, you got Brexit done, you crushed Jeremy Corbyn, you rolled out the vaccine and you stood up to Vladimir Putin," she said.
In her speech, she promised to "govern as a Conservative" by delivering a "bold plan to cut taxes and grow our economy".
"I will deliver on the energy crisis, dealing with people's energy bills but also dealing with the long-term issues we have on energy supply," she added.
Her team is understood to have been working on a support package for weeks, with an announcement pencilled in for Thursday.
Industry sources expect the incoming government to back freezing bills, a move which would costs billions.
The move would not necessarily require upfront funding, however, with reports the government could cover loans to companies repaid by consumers over time in the form of higher fixed prices.
Speaking earlier, Labour leader Sir Keir Starmer called on Ms Truss to freeze prices, but said oil and gas firms should pay for the move through an expanded windfall tax on profits.
His party followed the Liberal Democrats earlier this summer in backing a freeze, along with the SNP.
Ms Truss has ruled out further windfall taxes, telling activists during the campaign it "sends the wrong message to international investors".
Lib Dem leader Sir Ed Davey said a freeze was required to "avoid a social catastrophe for families and pensioners this winter".
SNP leader and Scottish first minister Nicola Sturgeon called for the price freeze to include businesses, which are not normally covered by the UK's energy price cap, and extra cash support.