Energy customers advised… don’t run up a big credit balance

As one small utility supplier collapses, and with more likely to follow, we look at how customers can protect themselvesHouseholds tempted by the promise of low prices if they switch to an unknown gas and electricity supplier have been warned not to run up big credit balances, in the light of the collapse of GB Energy.Last weekend the company, which had 160,000 customers, became the first domestic energy company to cease trading since 2008. With it blaming its failure on a big jump in wholesale