The gap between government and opposition timelines for decarbonising the grid is not “significant”, the chairman of the National Infrastructure Commission (NIC) has said. Speaking at the launch of the NIC’s latest annual progress review, Sir John Armitt was quizzed on Labour and government targets to decarbonise the grid by 2030 and 2035 respectively. Elsewhere, the review warns that the window is closing on the UK’s ability to catch up in terms of delivering its infrastructure needs and that failure to go further and faster over the next five years could constrain economic growth and threaten the country’s ability to meet its climate targets.