June 22 (Renewables Now) - Corio Generation, a portfolio company of Macquarie’s Green Investment Group (GIG), announced today that it has sealed a deJune 22 (Renewables Now) - Corio Generation, a portfolio company of Macquarie’s Green Investment Group (GIG), announced today that it has sealed a de Corio, Fecon to co-develop 500-MW offshore wind project in Vietnam