The Post Office has said that all £600 energy vouchers should be delivered to customers by this weekend.
It has said that the final batch of vouchers were dispatched to customers at the start of this week and should arrive by the weekend at the latest.
Over 80% of vouchers have already been redeemed.
Read more: PSNI investigating after £600 energy vouchers 'redeemed illegally'
Concerns have been raised by a number of households that they have not received their voucher yet and the police have received reports of 43 vouchers being redeemed frauduently.
The Post Office has said that if someone is concerned that they have not received their energy voucher, then they must contact their energy provider directly.
A Post Office spokesperson said: “Over 80% of vouchers have already been redeemed and the final tranche of vouchers was dispatched at the start of last week. They should have arrived by the weekend. If someone has not received their voucher, they should contact their energy provider directly.
"Their energy provider will then instruct us as to whether a voucher should be reissued and if that should go to a different address, for example, if someone moved home at the start of the year.”
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