By Nicholas Earl The cost of ringfencing consumer credit balances will be “disproportionate to their benefits” and risk adding more costs to bills “at a time when consumers can ill afford them,” revealed energy specialist Cornwall Insight The group has spoken out against the prospect of ringfencing, even while recognising the pain caused by historic levels of disruption across the domestic energy market. Dr Craig Lowrey, principal consultant at Cornwall Insight explained: “There will be a cost to the credit ringfencing proposals in particular that we believe will be disproportionate to their b…