Energy price caps

Mae’r dudalen yma ar gael yn Gymraeg.

Resources | Press 

Fairer prices for your gas and electricity, energy price caps - picture of a house shaped radiator on a yellow wall

Energy price caps are here to ensure you pay a fairer price for your gas and electricity. Find out about the caps set by Ofgem for prepaymentopen key term pop-up, standard variable and defaultopen key term pop-up energy tariffs in Great Britain. 

Prepay or prepayment meter

A prepayment meter tariff means you pay upfront for your gas or electricity use. You can ‘top up’ using an app on your phone, by text or through a token or key card at a shop. More.

Default tariff

If you’ve never switched energy supplier or have switched only once, you’re likely to be on a poor value, more expensive ‘default’ tariff. Default tariffs, including standard variable tariffs, are a basic tariff from an energy supplier. More.

Here you can find information for energy suppliers on the price cap levels we have set to apply to prepayment, default and standard variable (SVT) energy tariffs. We publish updated levels for the caps in February and August to apply in April and October, respectively.

Current price cap levels

Prepayment meter price cap: 1 October 2019 to 31 March 2019

Default tariff cap level: 1 January 2019 to 31 March 2019

Next price cap levels

Prepayment meter price cap: 1 April 2019 to 30 September 2019

Default tariff cap level: 1 April 2019 to 30 September 2019

Warm Home Discount customers on a standard variable or default energy tariff are protected at the level of the prepayment price cap until the end of 2018, after which they will transfer to the default tariff cap level set for direct debit payment methods on 1 January 2019, irrespective of how they pay.

If you are an energy customer trying to find out your capped tariff price, contact your energy supplier. You can find their contact information on an energy bill, or see Who is my energy supplier? You can also find answers to frequently asked questions on our FAQ page.

You can view all historical information and publications relating to the design of the caps on our policy pages for the default tariff cap and prepayment price cap

Publications and updates

  • Published: 29th Mar 2019
  • Guidance
  • 1 Associated documents
This document provides guidance for industry on the publicly available inputs and sources used for calculating default energy tariff cap models.

  • Published: 7th Feb 2019
  • Guidance
  • 2 Associated documents
Details of the reporting template that suppliers are required to complete to demonstrate their compliance with the prepayment price cap.

  • Published: 7th Feb 2019
  • Open letters and correspondence
  • 10 Associated documents
Updated levels of the Default Tariff Cap and associated documents for the second charge restriction period (1 April 2019 – 30 September 2019).

  • Published: 7th Feb 2019
  • Charts and data, Open letters and correspondence
  • 4 Associated documents
This document sets out the level of the prepayment meter price cap, which will apply for the period 1 April 2019 to 30 September 2019.

  • Published: 18th Dec 2018
  • Charts and data, Guidance
  • 2 Associated documents
View the energy price cap levels set for default energy tariffs (including standard variable tariffs), alongside worked examples of capped tariff calculations.

  • Published: 6th Nov 2018
  • Guidance
  • 4 Associated documents
This document sets out guidance on requesting a derogation from the default tariff cap for renewable tariffs. We are also publishing the derogation application form and cost sheets that needed to be completed to apply for a derogation.

  • Published: 6th Nov 2018
  • Decisions
  • 23 Associated documents
Our decision on the methodology to implement a Default Tariff Cap and the associated Licence Conditions.

  • Published: 7th Aug 2018
  • Charts and data
  • 3 Associated documents
These tables set out the level of the prepayment price cap that will apply for the period 1 October 2018 to 31 March 2019.

  • Published: 20th Jul 2018
  • Decisions, Open letters and correspondence
  • 1 Associated documents
This letter provides an update on our timetable for the default tariff cap and sets out our decision not to proceed with the vulnerable safeguard tariff.

  • Published: 28th Mar 2018
  • Guidance
  • 2 Associated documents
Reporting template for the WHD safeguard tariff (SLC 28AA).