Question to the Department for Business, Energy and Industrial Strategy:

To ask the Secretary of State for Business, Energy and Industrial Strategy, how many (a) domestic and (b) small non-domestic energy customers are presently on time of use tariffs.

As of 31^st December 2016, in Great Britain, there were 4.4 million domestic time of use (Economy 7 type meters). Of these, BEIS estimate that there were around 3.1 million domestic customers on Economy 7 or 10 tariffs.

While a number of suppliers are offering time of use and other innovative tariffs enabled by smart metering and elective half-hourly settlement, we do not have information on the number of domestic customers on these types of tariffs.

As of 31^st December 2016, in Great Britain, there were around 500,000 non-domestic profile 4 Economy 7 type meters (used by small non-domestic customers). However some properties with Economy 7 meters will be on single rate tariffs.

Source:

An estimate for the number of Economy 7 meters in Great Britain can be found here:

https://www.gov.uk/government/statistical-data-sets/regional-and-local-authority-electricity-consumption-statistics