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GB Energy

By Sarah Ingrams

Article 11 of 29

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GB Energy

GB Energy Supply went bust in 2016 and is now part of Co-operative Energy, which operates the GB Energy brand.

GB Energy Supply has been part of Co-operative Energy since 2016. It currently supplies gas and electricity to around 140,000 homes across Great Britain.

It says it wants to help customers save money on energy and keeps costs down by using efficient online systems and not spending money on advertising.

GB Energy Supply was established in 2014 and by 2015 its tariff was among the cheapest on the market. But just a year later, it stopped trading. At the time, it said its business was ‘untenable’ and blamed ‘swift and significant increases in energy prices over recent months’ for its failure. Plus its inability, as a small energy company, to bulk-buy energy in advance in order to ‘access the best possible wholesale prices’.

GB Energy Supply’s customers were transferred automatically to Co-operative Energy, which has continued to operate the GB Energy brand.

Find out if GB Energy Supply still offers cheap energy deals. Use Which? Switch to compare gas and electricity prices.

What is GB Energy's customer score? 

GB Energy doesn't have a customer score or star ratings in 2019. We did not receive enough responses from customers in our survey to calculate their ratings.

Last year GB Energy Supply came joint 17th out of 31 energy companies, with high ratings for billing and value for money. Customer comments on customer service were mixed and we didn't receive enough responses to provide a star rating. 

GB Energy Supply electricity sources

GB Energy in the news


February: GB Energy’s parent company Co-operative Energy, will raise prices by 10%, or £117 per year, for customers on 1 April.

If you’re on GB Energy’s standard variable tariff, this will affect you.


July: GB Energy Supply announced it will increase the price of its variable tariff, GB Green Pioneer, by 5% on 20 August. Customers will pay £30 more, on average, per year as a result.

Don’t pay your energy firm more than you have to. Which? Switch will help you track down the cheapest energy prices.