The ‘great grid upgrade’ is off track – ministers should spell out the risks for bills | Nils Pratley

National Audit Office calls for greater transparency on £70bn programme that is running over budget and behind scheduleSpeed up electricity grid upgrade or else face higher bills, warns UK watchdogIt’s an open secret in the energy industry that “the great grid upgrade” – the £70bn programme to rewire the nation’s electricity transmission network to enable clean power by 2030 – is running over budget and behind schedule, and may end up costing consu