The vouchers’ rollout began just two weeks ago, as opposed to the rest of the UK, where energy credits where made available in 2022.
The Northern Irish Post Office said that over 250,000 vouchers had been redeemed thus far, representing over half of the available half a million.
Andrew Goddard, head of payments for the Post Office, said: “Our postmasters have been working hard within their communities to help people redeem their vouchers quickly,” he said.
“We are pleased with the incredible progress of the voucher rollout, with over half of the total vouchers having now been redeemed within just two weeks of starting the mail-outs.
“We ask people who are due a voucher to keep a close eye out for it in the post.
“Please read the voucher very carefully and ensure you take it, plus the forms of ID specified, to ensure the post office teams can process your voucher and you receive your money.”
UK Energy Minister Graham Stuart added: “In just a matter of weeks since the scheme launched, more than a quarter of a million Northern Ireland households have redeemed their UK Government energy bill support vouchers – providing £600 to help with energy costs.
“Today's figures from the Post Office show just how quickly the support has arrived, with over half of vouchers issued so far used. However, I am urging anyone who has not yet redeemed their voucher to pop to their local Post Office as soon as possible so they can reap the benefits of this support.
“Vouchers are being issued throughout February so all households on Keypad meters should look out for them.”
People who pay their energy bills through direct debit are to receive the payment directly into their bank accounts, while others will receive a voucher in the post, which can then be cashed in at any Post Office.