DUMAGUETE CITY — First Gen Corporation is modernizing its Palinpinon-1 geothermal power plant in Valencia, Negros Oriental, increasing its installed capacity from 112.5 megawatts to 126 megawatts. The project is being implemented by the company's geothermal arm, Energy Development Corporation.
A Major Boost for Renewable Energy
The upgrade involves replacing the plant's three 37.5-megawatt turbine-generator units with three modern 42-megawatt units. EDC confirmed the details in a statement on Wednesday. The modernization is expected to add 13.5 megawatts to First Gen's renewable energy portfolio.
This additional capacity will be generated using the same volume of geothermal steam, without requiring extra steam extraction. The approach maximizes existing resources while supporting the country's transition to lower-carbon energy sources. It also strengthens the Visayas grid's supply of clean power.
Maximizing Resources Without Additional Steam
Noel Tan, head of the Southern Negros Geothermal Project, said the modernization demonstrates EDC's efforts to improve resource efficiency. He emphasized that generating more electricity without additional steam extraction helps accelerate the Philippines' shift toward a decarbonized energy future.
The strategy reflects a broader trend in the renewable energy sector. Operators are increasingly focused on optimizing existing facilities rather than expanding extraction. This approach reduces environmental impact while improving output and operational reliability.
Phased Implementation and Completion Timeline
The Palinpinon upgrade will be implemented in phases, with completion targeted by the end of 2027. First Gen and EDC officials announced during a press conference at the Net Zero Carbon Alliance that work would begin in the last quarter of this year.
First Gen president and chief operating officer Francis Giles Puno said the company is uprating existing facilities to add more than 10 megawatts of capacity. He noted that the same quality of geothermal steam will be used, while the latest turbine technology will improve overall plant efficiency.
Extending the Life of a Legacy Plant
The modernization is also expected to extend the operating life of the plant. Palinpinon-1 has been supplying renewable power to the Visayas grid for more than four decades. Its continued operation is vital to the region's energy security.
Jerome Cainglet, president and chief operating officer of EDC, confirmed the phased implementation schedule. The project ensures that the facility remains a reliable source of baseload power while adapting to modern performance standards.
Supporting the National Energy Transition
The upgrade aligns with the Philippines' broader goals for renewable energy development. Geothermal power provides consistent, round-the-clock electricity that complements intermittent sources like solar and wind. Enhancing existing plants supports grid stability.
For Negros Oriental, the investment reinforces the province's role as a key player in the country's geothermal industry. It also signals continued private sector confidence in the region's energy potential and long-term sustainability.
