All households in Northern Ireland are to receive a £200 payment to help with energy costs.
The support payment was originally due to be £100 when it was first announced in September and was only intended for home heating oil customers.
But the UK Treasury said it will now apply to all households "in recognition of the prevalence of alternative fuel usage in Northern Ireland".
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The payment will be provided as a credit to electricity accounts, but it remains unclear when it will be paid.
It is in addition to a separate previously announced £400 credit, the Energy Bills Support Payment, but it is also yet to be confirmed when this will arrive in accounts.
Home heating oil customers make up two-thirds of households in Northern Ireland - a much higher proportion than the rest of the UK.
The boosted oil support payment was announced on Thursday as part of the UK government's autumn statement, in which the Chancellor outlined tens of billions in tax rises and spending cuts.
Jeremy Hunt told the House of Commons that Northern Ireland will receive an additional £650million for public services, which will be provided over two years in 2023-24 and 2024-25.
He also said that £2million would be made available for a trade and investment event to take place in Northern Ireland next year.
The Stormont Executive is currently facing a £650million overspend in this year's budget.
Secretary of State Chris Heaton-Harris is expected to make a statement on Stormont's budget next week.
He said the economic challenges facing the UK were "further compounded in Northern Ireland, with the current lack of locally accountable leadership".
No Stormont ministers are in post as the DUP is blocking the restoration of devolved government in protest against Brexit's Northern Ireland Protocol.
Criticising Stormont parties for the current overspend, Mr Heaton-Harris said: "Despite receiving the biggest funding allocation since devolution began, decisions made by outgoing ministers have left a £660m black hole in the Executive's finances.
"In the absence of a functioning Executive, my department remains committed to closing the gap in public funding and protecting the ongoing delivery of vital front line services, but this is an unsustainable situation that I want to see resolved by the restoration of local leadership as soon as possible."
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