Mr Cormie, managing director at QM in Edinburgh until July, left when it hived off the Scottish business into a new project finance entity part-owned by its four directors. He set up his own consultancy, Edinburgh Advisers, to specialise in renewable energy deals.
The Green Investment Bank said: "Rob will be responsible for the key operations of the bank, including HR, IT and marketing and communications. Rob will also oversee the team providing technical input into each deal as well as having full responsibility for the management and reporting of the green impact that the bank will make as part of its investment strategy."
In addition, Mr Cormie would be "acting as a key interface, alongside the chairman and CEO, with the government and other key stakeholders to ensure the bank plays a key part in the success of the Scottish renewable energy industry".