Solar energy is being positioned as a “low-hanging fruit” to improve power reliability in the Philippines, as the grid faces ongoing vulnerabilities ahead of the summer months and amidst global market volatility.

The Institute for Climate and Sustainable Cities (ICSC) said in its latest power outlook that while electricity supply is expected to remain sufficient from April to June 2026, thin reserve margins leave the system exposed to outages, demand spikes, and delays in new power projects.

Against these risks, ICSC highlighted rooftop and community solar systems as solutions that can be deployed quickly to help stabilize supply and improve access to electricity. By generating power closer to where it is consumed, these systems can reduce pressure on the country’s centralized grid and older transmission network.

The group noted that more than 3,000 megawatts (MW) of rooftop solar capacity has already been identified nationwide, signaling strong potential for expansion without the need for large-scale land development or complex grid connections.

ICSC Senior Policy Advisor Pedro Maniego Jr. said: “We have already identified a significant amount of available potential solar rooftop spaces across the country, and detected over 3,000 MW of existing solar rooftop capacity. Solar and battery are already cheaper than coal and LNG. It does not have the problem of land conversion and interconnection, and it generates power where it is needed.”

The push for faster solar deployment comes as the Philippine power system continues to face structural challenges, including frequent plant outages, tight reserve margins, and heavy reliance on imported fossil fuels.

ICSC Grid Modernization Advisor Engr. Gaspar Escobar Jr. said: “There is a clear need to intensify and accelerate RE deployment even beyond this crisis, so we can eventually move away from our dependence on imported fossil fuels and achieve energy security.”

Beyond solar, the group also emphasized the need to improve energy efficiency, enforce compliance with grid maintenance standards, and strengthen coordination across island grids through power imports and exports as short-term measures.

A similar view has been echoed by other industry players for the long-term as well. In a previous report, the Philippine Solar and Storage Energy Alliance (PSSEA) highlighted rooftop solar as a long-term solution to shield the country from fuel price shocks.

With solar technologies already available and scalable, the challenge now lies in accelerating deployment to strengthen the country’s power supply and reduce exposure to external energy risks.

With solar already within reach, what more needs to be done to accelerate its adoption across the Philippines?

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