The Visayas power grid was placed under a yellow alert on June 15, marking the seventh consecutive week that the central Philippine islands have contended with a precarious power supply situation. The National Grid Corporation of the Philippines (NGCP) issued the alert, effective from 4 p.m. to 9 p.m. on Monday, signaling critically thinning power reserves across the region.
This recurring state of vulnerability leaves the grid susceptible to disruptions and underscores a deeper, entrenched problem of insufficient generating capacity. For millions of residents and businesses across the Visayas, the persistent energy shortfall translates into operational uncertainties, discomfort in a tropical climate where air conditioning and refrigeration are necessities, and a strain on essential services, raising the specter of rolling brownouts even if not immediately implemented.
The immediate cause of the June 15 alert, like many before it, stemmed from the forced outages of several major coal-fired power plants, significantly curtailing the available power supply. Among the critical facilities currently offline are Units 1 and 2 of Therma Visayas Inc., Unit 3 of Panay Energy Development Corporation, and Unit 1 of KEPCO SPC Power Corp. On the day of the alert, the available capacity in the Visayas stood at 2,581 megawatts (MW), barely exceeding the peak demand of 2,482 MW.
This narrow margin is precisely what triggers a yellow alert, indicating that while supply can still meet demand, the operating margin is insufficient to cover the transmission grid's contingency requirements. Should any additional generating unit unexpectedly trip offline or a sudden surge in demand occur, the grid would be left without adequate reserves, increasing the risk of widespread power interruptions.
The combined impact of these persistent outages and derated capacities has removed a substantial estimated 953.1 MW from the grid. This deficit highlights the fragility of the region's energy infrastructure and its heavy reliance on a few large generating facilities, whose unexpected shutdowns can send ripple effects across the entire network.
The current energy predicament in the Visayas is not an isolated incident but rather the culmination of weeks of systemic stress. Since May 12, the region has been in a state of continuous power constraint, with yellow alerts becoming an almost daily occurrence. This prolonged period of instability has tested the resilience of local communities and the adaptability of industries.
Cynthia Alabanza, Assistant Vice President of NGCP, revealed that the unstable power supply situation is projected to persist until August. This grim forecast is tied directly to the extended repair schedules of the offline coal plants. While Unit 3 of Panay Energy Development Corp. is tentatively expected to resume operations by July 3, Units 1 and 2 of Therma Visayas Inc. are not anticipated to come back online until August, prolonging the region's vulnerability.
The repercussions of this ongoing power struggle extend beyond mere inconvenience. Businesses face operational uncertainties, potentially impacting productivity, manufacturing schedules, and overall economic growth. Households endure the discomfort and disruption that come with intermittent power, particularly in a tropical climate where consistent electricity is vital for daily life. Essential services, from healthcare facilities to communication networks, also rely heavily on a stable power supply and must contend with heightened risk.
Adding to the persistent challenges, the Visayas grid was again placed on yellow alert on June 16, from 4 p.m. to 8 p.m. On Tuesday, the available capacity was reported at 2,587 MW, with peak demand at 2,384 MW, reflecting a similarly narrow margin. This continuous issuance of alerts reinforces the severity and ongoing nature of the problem, indicating that the underlying issues leading to generation deficits have yet to be resolved.
As of June, seven power plants in the Visayas have been on forced outage, with eight more experiencing outages since May, painting a stark picture of the widespread operational issues facing the region's power sector. The National Grid Corporation of the Philippines has detailed that a total of 26 plants are currently on forced outage across the Visayas, while an additional 11 are operating at derated capacities, leading to the substantial aggregate loss of 953.1 MW. These figures are not just statistics; they represent tangible gaps in the power supply that directly impact the daily lives and economic activities of millions.
NGCP has consistently called for the establishment of more power generators to bolster supply and stabilize the grid. This appeal underscores a critical need for diversified and expanded energy sources to meet the Visayas' growing demand. The region’s current reliance on inter-island power imports from Luzon and Mindanao further highlights its inherent vulnerability. Any disruption in these transmission lines or an increase in demand in the exporting regions can exacerbate the Visayas’ already tight supply.
The energy crisis in the Visayas is further compounded by the broader economic context. While the Bureau of Internal Revenue reported a 14.15 percent year-on-year increase in collections for May 2026, reaching P279.135 billion, this growth occurred "despite an ongoing energy crisis." This indicates that while the economy shows resilience, the energy sector remains a drag, potentially hindering faster recovery and development across the region.
The frequent yellow alerts in the Visayas are a stark reminder of the urgent need for comprehensive energy planning and strategic investments. Beyond the immediate task of bringing offline plants back online, there is a pressing requirement to accelerate the development of new power plants, enhance grid reliability, and explore alternative energy sources, including renewables, to build a more resilient and self-sufficient power ecosystem.
Without decisive action to address these underlying systemic weaknesses, the central Philippine islands may continue to experience a cycle of power alerts and potential disruptions, impeding their full growth potential and casting a shadow over future economic prosperity.