THE RECENT DISCOVERY of an 8 trillion cubic feet of gas reserves in the Sulu Sea provides a promising relief for the country’s yawning energy inefficiency, currently fueled mainly by imported petrochemicals and LNG (liquefied natural gas).
In a report reported to the Australian Securities Exchange — and furnished to the Philippine Stock Exchange, an exploration consortium places the country alongside Russia, Iran and Qatar which translates to combined gas production equivalent to 55 percent of the global reserves.
Data obtained by The PH Insider from Worldometer Gas Reserves, showed Russia holding 1,688 tcf accounting 25 percent of the global reserves, while Iran boasts of 1,200 tcf or 16 percent, and that of Qatar’s 870 tcf or 14 percent of global reserves anchored by the massive North Field.
Completing the top five are the United States and Turkmenistan.
The discovery at the Sulu Sea comes at a time when Malampaya, which has been explored and used in over two decades, is nearing depletion but costly and persistent exploration is still being undertaken in other adjoining water bodies.
Natural gas (natgas) cannot replace all fossil fuels permanently because it is itself a fossil fuel and still releases carbon dioxide when burned, though it serves as a cleaner “bridge fuel” to reduce emissions while scaling up renewables.
As a cleaner fuel, natgas produces 50 to 60 percent less CO2 (carbon dioxide) than coal when used for generating electricity. Many energy plans use natural gas as a temporary backup to support variable renewable sources like wind and solar.
Burning natural gas still adds GHG (greenhouse gases) to the atmosphere, and unburned methane leaks during extraction are potent contributors to global warming.
While wind, solar, nuclear, and hydro can largely replace fossil fuels for electricity and home heating, heavy transport and certain high-heat industrial processes face major hurdles. True long-term replacement requires zero-carbon alternatives, grid storage upgrades, and synthetic or alternative fuels rather than another fossil gas.
Natural gas can help a country achieve temporary energy sufficiency and security by diversifying its power sources and offering a reliable backup for variable renewable energy like wind and solar.
Sulu Sea’s Potential
As reported to PSE, energy exploration in the Sulu Sea focuses heavily on natural gas, led by major recent resource upgrades under Service Contract 80 (SC-80) and Service Contract 81 (SC-81) in the Bangsamoro Autonomous Region in Muslim Mindanao (BARMM).
Service Contract 80 (SC-80) & SC-81 is operated by Australia’s Tetragon Energy with joint venture partners like PXP Energy Corp chaired by Manuel V. Pangilinan and the Ramos group’s Philodrill Corp. These offshore blocks lie in the Sandakan Basin of the Sulu Sea.
Operator Tetragon Energy upgraded its mid-range estimate for recoverable gas at the Halcon prospect within SC-80 to 8 trillion cubic feet (TCF), a significant jump from previous estimates of 3 tcf. SC-80 features previously drilled undeveloped gas finds (such as Dabakan-1 and Palendag-1A), containing certified contingent resources.
Companies like the United Kingdom’s Sunda Energy are involved in the basin, aiming to derisk multi-TCF gas resource potentials.
Reprocessing of 4,600 square kilometers of 3D seismic data is underway, with full datasets expected by mid-2027 to pave the way for potential exploration drilling.
Benefits of Gas Plants
Gas plants turn on quickly to supply power when the sun does not shine or the wind does not blow. It reduces a country’s heavy reliance on a single polluting fuel like coal or imported oil.
Gas power plants take much less time to build than large nuclear or hydroelectric plants.
Natural gas burns cleaner and produces about 50% fewer carbon emissions than coal.
Countries without underground gas deposits must buy liquefied natural gas (LNG) from abroad, leaving them vulnerable to global price spikes and supply cuts. Natgas is also a fossil fuel that will eventually deplete.
Ph LNG Imports
With the declining output of its own Malampaya gas field, the Philippines has been importing LNG from: Australia, Nigeria, Equatorial Guinea, Indonesia, US, China and Brunei.
Official international trade statistics in 2024 (such as UN Comtrade, World Bank WTS) report the Philippines importing approximately 1.185 billion kilograms (or 1.185 M tons)of LNG worth US$767.7 million.
Annual import demand is scaling up rapidly (projected beyond 2 million tons) as commercial terminals ramp up operations and domestic gas fields face depletion. Projections indicate cumulative LNG shipments through the late 2020s could total billions of dollars as reliance grows.
According to records, recent deep-sea geological surveys and seismic evaluations indicate that the southwestern Sulu Sea basin is a highly prolific hydrocarbon region. Offshore exploration projects (specifically under Service Contracts 80 and 81) have placed the recoverable natgas reserves at 8 to over 10 tcf.
Additionally, research into the region’s marine floor and nearby deep-water trenches indicates that methane also exists abundantly in the form of gas hydrates (methane clathrates or “burning ice”) trapped within crystalline water structures under the high pressure and low temperatures of the seabed.
Prosperity for BARMM
The Sulu Sea natural gas reserves represent a monumental shift for the Bangsamoro Autonomous Region in Muslim Mindanao (BARMM) economy, potentially transitioning the region from a historically underfunded conflict zone into a cornerstone of Philippine energy security.
Under the Bangsamoro Organic Law, the national government and BARMM co-manage these energy resources and equally share the revenues from the gas source.
The resulting royalties and taxes could fund large-scale regional public works, healthcare, and education subsidies, significantly bridging the developmental gap in provinces like Sulu and Tawi-Tawi.
BARMM currently has lower electrification rates compared to the rest of the Philippines. Developing the Sulu Sea reserves will provide clean, domestic gas to power local grids.
Plans like the Lugus Island Petroleum Park (LIPP) in Sulu could materialize, introducing heavy industrial facilities, pipelines, and logistics hubs to the region.
The enormous gas field can attract global consortia like the ones currently operating in SC 80 and 81 that brought together a mix of Australian, British, and local Filipino firms (including Triangle Energy, Sunda Energy, PXP Energy, and Philodrill). A verified discovery will trigger billions of dollars in foreign direct investment (FDI).
The upstream extraction, downstream processing, and maritime operations will create thousands of technical and auxiliary jobs for the local workforce.
Historically, peace and order concerns halted exploration in the southern basins. The active participation of the BARMM Ministry of Environment, Natural Resources, and Energy (MENRE) acts as a powerful institutional signal that the region is stable, safe, and open for high-stakes international business.
The BARMM government is concurrently drafting the BARMM Energy Code to ensure that these massive influxes of revenue are governed transparently and protect local indigenous communities, avoiding the governance pitfalls commonly tied to sudden fossil fuel wealth.