The latest payments are in addition to the 400 being distributed to every household and the Energy Price Guarantee, which caps the price that suppliers can charge.
It's important that we do everything we can to support pensioners who are most exposed to higher costs, said Mel Stride, Work and Pensions Secretary.
He added that as we deal with the impact of Putin's illegal war in Ukraine and the aftermath of the Pandemic, we will continue to stand by the most vulnerable, with further cost-of-living payments coming next year.
The extra support with winter energy bills will automatically be paid into their accounts within the next two months, according to the vast majority of pensioners. People who don't receive benefits or the state pension will need to make a claim.
The money will appear on bank statements with the customer's national insurance number, followed by 'DWP WFP' for people in Great Britain, or 'DFC WFP' for people in Northern Ireland.
In the second half of the year, a number of cost-of-living payments are being provided to eligible households by the government, on top of the 400 discount for billpayers.
Those on low-incomes and receiving various benefits are being paid 650 in two instalments. The second payment went out to the vast majority of them in recent weeks.
People who qualify through their tax credits, rather than through other benefits, received their first payment between 2 and 7 September. The payment that's being rolled out is their second.
It warned that anyone contacting you out of the blue about cost-of-living payments from HMRC could be part of a scam.