CAGAYAN DE ORO CITY – A Mindanao-based consortium unsolicited proposal to rehabilitate, operate and maintain the Agus-Pulangi Hydropower Complex (APHC) will be using proven technology and management systems previously used in the grid by the National Power Corporation (Napocor). The Greenergy Renewables Group Inc. (GRGI) submitted the unsolicited proposal dubbed Energy Storage Project (ESP) to …