18 energy suppliers pay £10.4 million for contract renewal failures

Press release

Publication date

Industry sector

Supply and Retail Market
  • Ofgem found 18 suppliers failed to correctly protect customers’ tariff prices when they decided to switch supplier or tariff 
  • Over 1 million customers were overcharged over £7.2 million for the failings  
  • Collectively, the suppliers are issuing refunds and redress payments worth £10.4 million 

Energy regulator Ofgem found 18 suppliers did not adhere to price protection rules, which protect a customer’s tariff price when they decide to either switch suppliers or tariffs after a price increase.

Several of the suppliers self-reported the issue to Ofgem. All suppliers were then requested to self-assess their practices, which revealed that 18 suppliers were not compliant between 2013-2020.

In total, over 1 million customers were overcharged over £7.2 million.

The customers affected included: 

  • those on a standard variable tariff who switched to another supplier but did not have their variable tariff price protected during the switch,
  • customers on a fixed-term tariff who switched to another supplier but did not have their fixed term tariff protected during the switch, and 
  • customers on a fixed-term tariff who moved to another tariff with their supplier but did not have their fixed-term tariff protected during the switch.

Most of the failures were down to suppliers not having adequate arrangements in place to make sure the protections were applied in full when customers decided to switch.

The suppliers have since agreed to refund all affected customers, and in some cases make goodwill payments, to the tune of £10.4 million. Where it has not been possible to process refunds, the suppliers have agreed to make payments to the energy redress fund.

Ofgem made clear to suppliers that customers’ tariffs are protected while either switching suppliers or tariffs and they need to ensure their systems, processes and practices are fit for purpose.

Ofgem expects all suppliers to ensure that they comply with these requirements and if further non-compliance is identified, Ofgem will be likely to take formal action.

Anna Rossington, interim director of retail at Ofgem said:

“Customers should have confidence in switching and not be overcharged when doing so. This case sends a strong message to all suppliers that Ofgem will intervene where customers are overcharged and ensure that no supplier benefits from non-compliance. 

“It also shows that, where appropriate, Ofgem is prepared to work with suppliers who have failed to comply with the rules, but who are willing to self-report issues and put things right for their customers.”

The suppliers, number of customers affected, and redress payments are as follows:


Number of customers affected

 Total Detriment (£) 

 Total Redress Package

Bristol Energy




British Gas/ Centrica




E (Gas and Electricity)



 £ 72,772.93








 £ 516,191.55





ESB Energy




Green Star Energy








Octopus Energy








OVO Energy




PFP Energy




Scottish Power








So Energy



 £ 78,480.89





Utility Warehouse




Ofgem has now closed this compliance engagement without taking formal enforcement action, taking into account the suppliers’ cooperation with Ofgem, and the steps they have taken to address their failings.

Notes to editors

  • Ofgem has published a compliance note with further details.
  • The Ovo Group acquired SSE Retail in January 2020.    
  • Shell acquired Green Star Energy in November 2019.
  • This compliance action relates to Standard Licence Conditions 23.6, 24.9 and 24.11.
  • The Energy Industry Voluntary Redress Scheme provides money to charities to deliver energy related projects that support energy consumers in vulnerable situations. It also helps to deliver benefits to consumers, who were negatively impacted by the specific issue that triggered the redress payment. For more information about the Energy Industry Voluntary Redress Scheme, see: Ofgem appoints Energy Saving Trust to distribute payments from rule-breaking energy companies to charities.

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About Ofgem 

Ofgem is Britain’s independent energy regulator. Our role is to protect consumers now and in the future by working to deliver a greener, fairer energy system. We do this by: 

  • Working with Government, industry and consumer groups to deliver a net zero economy at the lowest cost to consumers. 
  • Stamping out sharp and bad practice, ensuring fair treatment for all consumers, especially the vulnerable. 
  • Enabling competition and innovation, which drives down prices and results in new products and services for consumers. 

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