Green banks are not banks that take deposits from individuals. They operate like investment banks, and so they syndicate deals with large investors.
A green investment bank for Canada would operate at the wholesale level. Green banks can be retail level or wholesale level. A green bank for Canada would operate at the wholesale level, syndicating deals with large institutional investors and large-project developers.
As an example, the UK Green Investment Bank markets the offshore wind sector, and our own Enbridge, a company from Calgary, has invested in partnership with the UK Green Investment Bank in the offshore sector in a total deal worth $2 billion, of which Enbridge invested $750 million.