A “smart energy” revolution could help ensure that the UK does not suffer blackouts, according to National Grid’s new UK chief. Nicola Shaw, its executive director, said technological advances will reduce the need to build new conventional power stations in the UK. An “internet of energy” will allow fridges, washers and dishwashers to help balance energy demand. Some commentators say the UK needs more gas-fired power to prevent blackouts. Ms Shaw agreed that more investment…