Macquarie has sealed its £2.3bn privatisation of the Green Investment Bank by pledging to increase its investment in emerging technologies such as electric vehicle charging, batteries and low-carbon heating. The Australian bank said it would bring its “pioneering spirit” to channel more funds into development-phase innovations than the green investor was able to do under Government control. “We will continue to invest in what has been done to date such as offshore wind and energy from waste,” said Edward Northam, the group’s new boss.