The end of June is a deadline for households with prepayment meters to redeem all of their energy coupons.
More than four out of every five vouchers have already been used, according to the government, but £130 million is still available.
Each household receives £400 in assistance through the voucher program.
Customers are advised to get in touch with their electricity provider in the coming weeks if they have any problems with their vouchers.
In order to assist households in Britain with the cost of skyrocketing gas and electricity bills, the government announced the Energy Bills Support Scheme last year. This program gave each household in Britain £400.
Together, the government, charities, consumer advocacy organizations, and energy providers are urging those who qualify to apply for the assistance they are due before the vouchers expire on June 30.
The government is "redoubling our efforts to reach anyone who still hasn't claimed this help," according to Amanda Solloway, the minister for energy consumers and affordability.
The majority of homes in England, Scotland, and Wales pay their energy bills via direct debit, and starting in October, they automatically received a credit or a deduction of about £66 per month from their bills for the next six months.
The two million households that use conventional prepayment meters for their gas or electricity, however, have not found the system to be as simple. Six vouchers, each worth £66 or £67, were sent to them in the mail or via email as payment for the assistance.
To credit the vouchers onto a meter, bring them to a nearby PayPoint location or a post office.
Due to the fact that many households with conventional pre-payment meters are among the most vulnerable, charities have been urging people to use their vouchers.
Fuel Bank Foundation CEO Matthew Cole expressed his organization's "really serious concern" that hundreds of thousands of people might "miss out on this vital financial support.".
It was discovered that some of the reasons why they had not been redeemed included people not receiving them, having the wrong address, or vouchers being misplaced or deleted.
Any lost, missing, or expired vouchers can be issued again, as long as they are used by 30 June 2023, according to Emily Seymour, energy editor for Which?
She continued, "If you have a traditional prepayment meter and have not received your vouchers, are unsure of how to redeem them, or need a voucher to be reissued, you should contact your supplier for more information.
