The cap, which represents the highest price providers may charge for typical usage of energy, is anticipated to reach £3,582 in October and £4,266 in January.
According to leader Sir Keir Starmer, the average household would save £1,000 under Labour’s proposal.
The government said that it has committed £37 billion in assistance to get people through the winter.
Sir Keir said that Labour “wouldn’t let people pay a penny more” on their winter heating bills as he unveiled his party’s £29 billion proposal to cope with rising energy prices.
According to him, maintaining the price restriction at the average household’s present annual income of £1,971 would reduce inflation by four percentage points.
The rate of price growth, or inflation, reached 9.4% in June, the highest level in more than 40 years. The Bank of England has warned that it might reach a high of more than 13% later this year.
The invasion of Ukraine is being pushed as a partial reason for the current rise in energy prices, while increasing prices for food, gasoline, and diesel have also hurt consumers.
Labour said that, if elected, it would raise taxes on oil and gas firms to pay for the plans.
The government proposed a 25% windfall tax on oil and gas firm profits in May, expecting to earn $5 billion in revenue in the first year.
By moving the commencement date back to January and taking into account increasing oil and gas prices, Labour said it would eliminate a “absurd loophole,” raising £8 billion.
The party further claimed that it would raise an additional £14 billion by abandoning pledges made by the Conservative leadership candidates, such as stopping the “green levy” on fuel bills, as Ms Truss is proposing, or eliminating VAT on domestic fuel bills, as Mr Sunak has promised, as well as by eliminating the £400 energy rebate.
It claimed that lowering energy costs would slow the pace of inflation, resulting in a £7 billion reduction in government debt interest payments.
Sir Keir said that his party will insulate 19 million houses over the next ten years in order to decrease energy consumption and save money in the long run.
The plans also include a commitment to safeguard the nation’s energy supply to fend off unforeseen shocks, including by tripling onshore and offshore wind capacity and boosting solar, tidal, hydrogen, and nuclear power generation.
A national emergency, in Sir Keir’s words, “needs strong leadership and urgent action,” he said, adding that the Conservatives had “failed to prepare and refused to invest.”
He said, “Labour’s fully-funded plan would fix the problems immediately and for the future – helping people get through the winter while providing the foundations for a stronger, more secure economy.”
The freezing of the energy price ceiling would be “the biggest relief for almost every household in the UK but especially those that are struggling,” fund manager George Godber of Polar Capital told the BBC’s Today programme.
But he said that increasing the pressure on energy firms to pay for it “is a really naive policy.”
“we can’t go and tax the profits that BP and Shell make in a America in the same way we wouldn’t allow the US government to tax the profits they make here,” he added. “Unless the Labour party proposing breaking international tax law, which I doubt.”
“Both those businesses make very, very little money in the UK, they are international businesses and they are held up saying ‘look how much money they are making let’s go and tax them and fund it’ and that’s why, despite that huge hike you have seen already in marginal taxation in the North Sea, it doesn’t raise much money.”