However, Richard Bates, the organisation's policy advisor, added that the new guidelines would not mean that "everything is resolved".
"The guidance has not addressed the confusion that fuel poor consumers can face on whether they are eligible for their suppliers' social tariff and will not ensure that all those who need such assistance are eligible for these tariffs," he explained.
"We need them to operate to decent minimum standards and to include those who are most vulnerable."
The publication of Ofgem's new guidelines has come after the body also unveiled new measures to improve green tariffs.
According to the regulator, the new plans will help to provide more transparent information to customers about the products.
Click here to run an energy price comparison, and see if you could be paying less for your gas and electricity.