Homeowners looking to compare energy prices from other suppliers always have the option of pursuing cheaper rates through domestic efficiency.
A wide range of measures and equipment can be installed by homeowners to both capture heat within a property and generate electricity for cheaper rates than those charged by the major suppliers, reports the Telegraph.
John Anderson, a retired teacher from West Yorkshire, has installed double-glazing, cavity wall and loft insulation and solar panels to his home, part of which was paid for using a government grant.
Mr Anderson told the paper: "You have to install specific features and use accredited contractors to qualify [for grants] but in my experience it was all very easy. Some think grants are open only to the less well-off but that's not true."
He added that he has spent a lot of his own money on the retrofit, but he has reduced his gas consumption by 12 per cent and his electricity usage by more than 70 per cent.
The government recently announced plans to insulate every UK home over the next few years.
If you want to find out more about your energy options and how you could save up to £378 in minutes, click here.