Since 2005, older people have seen their energy bills more than double.
In 2005, the average annual spend was £668.98, compared to £1,355.90 last year, research from Saga has found.
The report said that the over 65s spent an estimated £17.4 billion on electricity and fuel bills in 2012.
More top news
Wet and windy for a time across many areas through this evening
The US president is losing another of his key aides in the latest of a string of high-profile departures.
TV veteran Sir Bruce Forsyth has died at the age of 89