Question

To ask the Secretary of State for Energy and Climate Change, what estimate his Department has made of the proportion of domestic customers who are on their supplier's standard tariff.

DECC estimate, from our Domestic Fuels Inquiry, that 71 per cent of gas customers and 73 per cent of electricity customers were on their supplier’s standard variable rate tariffs. These percentages include those on standard variable rates who receive dual fuel or online discounts. This survey does not cover most of the independent suppliers.