It really depends on the tariffs and the suppliers you’re comparing.  Some are able to offer gas more cheaply on its own, which you can combine with a cheap electricity tariff from another supplier. Conversely, others, meanwhile, give you the best value with a dual fuel service.  The best way to find out is to compare your options across the board, which we’ll help you do with our comparison tool.  There are other benefits to choosing a dual fuel service besides cost, of course. For instance, it reduces your household admin and streamlines your finances, as there’s only one bill to deal with. You may find dual fuel simply makes life easier.