The Philippines and Singapore are exploring a potential cross-border electricity connection that could strengthen regional energy security, diversify power supplies and create new opportunities for renewable energy development.
The two countries exchanged Letters of Intent (LOIs) on October 26, 2026, during the Singapore International Energy Week (SIEW) Summit, marking another step towards greater cooperation in Southeast Asia’s electricity sector.
The agreements were witnessed by Philippine Energy Secretary Sharon S. Garin and Singapore’s Minister for Energy, Trade and Industry, Dr Tan See Leng.
The proposed electricity interconnection forms part of a wider effort to advance the ASEAN Power Grid, an initiative designed to connect national electricity networks and allow participating countries to trade power across borders.
For the Philippines, which relies on separate electricity grids across its island regions, stronger international connections could eventually provide additional options for managing supply shortages and diversifying energy sources.
However, the proposed partnership remains at an exploratory stage. The letters do not constitute a construction contract or guarantee that electricity will begin flowing between the two countries.
Why the Philippines wants to connect its electricity network with Singapore
The Philippines faces a distinctive challenge when it comes to regional electricity integration: its archipelagic geography.
Unlike mainland Southeast Asian countries, the Philippines cannot simply connect its electricity transmission network to neighbouring countries through conventional land-based power lines.
Any direct international electricity connection would require substantial subsea transmission infrastructure, along with agreements covering electricity trading, financing, technical standards and regulatory oversight.
The proposed partnership with Singapore could help explore how such a connection might work and what arrangements would be necessary to make it commercially viable.
Energy Secretary Garin has emphasised that regional electricity connectivity could help countries diversify their energy supplies and improve their ability to respond to disruptions.
She also highlighted the importance of fair bilateral agreements, compatible regulations and clear benefits for every participating country.
The Philippines has also been exploring potential electricity connections with Malaysia and Indonesia as part of its broader regional energy strategy. Philippine Embassy+1
ASEAN Power Grid could open new electricity trading opportunities
The proposed Philippines-Singapore connection is part of the broader ASEAN Power Grid initiative, which seeks to establish stronger electricity links among Southeast Asian countries.
The objective is to allow countries with available electricity generation to supply markets experiencing greater demand or temporary shortages.
For example, countries with substantial renewable energy resources could potentially export surplus electricity to neighbouring markets, while importing countries could gain access to additional sources of supply.
A more integrated regional network could also help improve the utilisation of existing power generation facilities and support investment in renewable energy projects.
However, building this system requires more than installing transmission cables.
Countries must agree on electricity trading arrangements, grid access, transmission charges, regulatory responsibilities and procedures for handling supply interruptions.
Singapore’s Energy Market Authority and regional energy officials have repeatedly highlighted the importance of regulatory cooperation and financing arrangements in advancing cross-border electricity trade. SIEW+1
Singapore-US energy study highlights challenges facing regional power connections
The Philippines-Singapore discussions are taking place alongside a broader regional effort to make cross-border electricity trading more practical.
On October 28, Singapore’s Ministry of Energy and Trade and Industry, Energy Market Authority and the United States Department of Energy released preliminary findings from the second phase of their joint feasibility study on regional energy connectivity.
The study, launched in October 2024, examines the legal, regulatory and financial arrangements needed to develop electricity connections across Southeast Asia.
Its preliminary findings identify several priorities:
- Stronger cooperation among regional governments.
- More compatible legal and regulatory frameworks.
- Financing mechanisms to attract investment in subsea electricity cables.
- Better allocation of construction and operational risks.
- Clearer arrangements for cross-border electricity trading.
The final report is expected in early 2027.
These findings could help guide the development of the ASEAN Power Grid, although the Singapore-US study is a separate regional initiative and not a feasibility approval for a specific Philippines-Singapore cable. EMA+1
Nuclear energy cooperation is also part of the agreement
Electricity interconnection was not the only subject covered by the Philippines and Singapore’s energy discussions.
The two countries also exchanged a separate Letter of Intent concerning capability development in the peaceful uses of nuclear energy.
The proposed cooperation covers knowledge-sharing, technical expertise and the development of institutional capabilities needed to assess nuclear technology responsibly.
For the Philippines, this supports broader efforts to diversify its energy sources and strengthen long-term electricity security.
However, the nuclear cooperation agreement should not be confused with a commitment to build a nuclear power plant with Singapore.
It is an exploratory framework for cooperation, not an agreement to construct a particular facility. Philippine Embassy+1
Could the partnership eventually lower electricity bills?
One of the biggest questions for Filipino households is whether stronger regional electricity connections could translate into cheaper power.
In principle, access to additional electricity suppliers could improve competition, diversify supply and help reduce exposure to domestic generation shortages.
Regional electricity trading could also allow countries to take advantage of differences in energy resources and generation costs.
However, a cross-border connection would involve significant construction expenses, particularly because the Philippines would require subsea transmission cables.
The cost of building, maintaining and operating these facilities would need to be reflected in commercial agreements and electricity pricing arrangements.
Energy Regulatory Commission officials have also emphasised the need for clear rules covering grid access, transmission charges, cost allocation and responsibility during supply disruptions.
Consequently, the proposed partnership does not guarantee lower electricity bills. Any impact on household rates would depend on the eventual infrastructure investment, electricity purchase agreements, regulatory approvals and actual trading prices. Lenie Lectura+1
What happens next?
The Philippines and Singapore will need to move beyond their initial letters of intent and determine whether a cross-border electricity connection is technically and commercially feasible.
Several major questions remain:
- Transmission route: Where would the undersea electricity cables run?
- Project financing: Who would pay for construction and maintenance?
- Electricity trading: Which country would supply power, and under what pricing arrangements?
- Regulatory approval: How would the two countries coordinate electricity market rules?
- Commercial viability: Would the project generate enough benefits to justify its substantial investment?
Philippine Energy Secretary Sharon Garin has stressed that regional electricity integration requires practical bilateral agreements rather than political commitments alone.
She has also acknowledged that developing the ASEAN Power Grid will take time, with individual countries needing to negotiate and implement their own connections.
For now, the Philippines-Singapore initiative represents an opportunity to explore another avenue for strengthening the country’s energy security.
If the proposed connection eventually becomes reality, could Filipino households gain access to a more reliable and diversified electricity supply — and will the benefits eventually reach consumers through more competitive power prices?
