Former Ofgem chief executive Dermot Nolan has told Utility Week he would like to see a social tariff delivered through energy networks as opposed to suppliers. Nolan, who led the regulator between 2014 and 2020, said the introduction of a social tariff, set below the price cap for vulnerable customers, brought the risk of distorting competition if dispersed via retailers. He also warned it is not feasible to bring in such a tariff before the October price rises.