Green Core Geothermal, Inc. (GCGI)

Green Core Geothermal, Inc. (GCGI) is a wholly-owned subsidiary of First Luzon Geothermal Energy Corporation, which is wholly owned by the First Gen’s Energy Development Corporation (EDC).

GCGI was incorporated on June 22, 2009 with primary activities on power generation, transmission, distribution and other energy-related businesses. It is currently operating the 172.5 MW Palinpinon and 123.0 MW Tongonan 1 geothermal power plants in Negros Oriental and Leyte, respectively, following its successful acquisition from the Power Sector Assets and Liabilities Management Corporation (PSALM) in 2009. 

GCGI holds a Retail Electricity Supplier (RES) license valid until June 7, 2025, and a GEOP operating permit valid until May 2026. On May 20, 2021, the DOE approved the application of GCGI operating permit as RE Supplier under the GEOP, valid for a period of five (5) years from the date of issuance. 

The Palinpinon geothermal power complex, located in Valencia, Negros Oriental, consists of two (2) power stations, Palinpinon I and II, which are approximately five kilometers apart. 

Commissioned in 1983, Palinpinon I comprises three (3) 37.5 MW steam turbines for a total rated capacity of 112.5 MW. Palinpinon II, on the other hand, consists of three (3) modular power plants: Nasuji, Okoy 5, and Sogongon. The 20 MW Nasuji, commissioned in 1993, is currently under preservation mode, while the 20 MW Okoy 5 was commissioned in 1994. Constructed in 1995, Sogongon consists of two (2) 20 MW units, Sogongon-1 and Sogongon-2.  Situated in Sitio Sambaloran, Barangay Lim-ao, Kananga, Leyte Province in Eastern Visayas, the Tongonan Geothermal Power Plant consists of three (3) 41 MW units, which began commercial operations in 1983.  

Both the Palinpinon and Tongonan geothermal power plants are fueled by geothermal steam supplied by EDC.