Millions of homes are still paying too much for their heat and power. Someone with a combined annual gas and electricity bill of £1,200 could save around £300 by switching to an internet deal, which email rather than post the bill (the supply coming into your house stays the same). Price comparison sites such as TheEnergyshop.com and uswitch.com offer a quick postcode search. Just tap in a few details and switch online in minutes. The Independent also has a site, compare.independent.co.uk.