MANILA, Philippines — Moving to strictly regulate anti-competitive concentration and maintain a level playing field across the country’s unbundled energy sectors, state power regulators have tightened the leash on local power firms. The Energy Regulatory Commission (ERC) has officially reduced the maximum allowable installed generating capacity and individual market share caps for the year 2026.
Under the new mandates, no individual power generation company is permitted to operate an electricity portfolio exceeding 7.05 gigawatts (GW) nationwide.
The ERC adjusted the national grid’s maximum installed generating capacity downward for 2026, dropping the baseline ceiling to better reflect the true operating capabilities of plants across the three island groups:
[ 2025 National Maximum Capacity: 28,390.07 MW ]
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▼ (Regulatory Volume Reduction)
[ 2026 National Maximum Capacity: 28,197.05 MW ]
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┌──────────────┴──────────────┐
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[ THE GRID ALLOCATIONS ] [ MARKET SHARE MAXIMUM ]
• **Luzon:** 20,422.80 MW • **Maximum Ceiling:** **7,049.26 MW**
• **Visayas:** 3,478.30 MW per generation group nationwide.
• **Mindanao:** 4,295.90 MW • **EPIRA Law Bounds:** Limits firms to
**25%** of the national grid and
**30%** of any single regional grid.
The adjusted thresholds will remain strictly in effect until the next formal revision cycle, scheduled on or before March 15, 2027.
To prevent monolithic energy conglomerates from crowding out smaller providers within specific regional sub-grids, the ERC has locked in strict generation addition limits per island group.
[ REGIONAL CAPACITY HEADROOM ]
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[ LUZON AND MINDANAO CEILINGS ] [ THE VISAYAS PROFILE ]
• **Luzon Grid Headroom:** Generation groups are explicitly barred • **Visayas Grid Cap:** Maximum portfolio ownership within the central
from adding more than **6,126.84 MW** of power to the main grid. island network is tightly capped at **1,043.50 MW**.
• **Mindanao Grid Cap:** Companies cannot control or expand past • **The Vulnerability Buffer:** The strict cap aims to diversify
**1,288.78 MW** in the southern grid. ownership as the region battles frequent rotational brownouts.
The regulatory adjustments follow intense public scrutiny over rising consumer electricity rates and a wave of disruptive plant failures across the Visayas region.
| Regulatory Objective | Core Operational Strategy | Expected Consumer/Industry Outcome |
| Market Antimonopoly Guards | Strict execution of EPIRA Section 45 antitrust limits on market share domination. | Prevents artificial supply throttling and protects consumers from predatory, unreasonable pricing. |
| Grid Modernization Tracking | Accurately accounting for active operational capacities rather than theoretical nameplate metrics. | Enables realistic planning for transmission upgrades and minimizes unexpected supply deficits. |
| Clean Energy Integration | Creating open grid space specifically designated for alternative suppliers. | Smooths out the deployment of variable renewable energy assets and utility-scale battery energy storage systems (BESS). |
ERC Chair Francis Saturnino Juan emphasized that keeping the power generation market open is essential for the country’s expanding economic footprint. “Healthy competition in the power sector is essential to ensuring reliable electricity supply and protecting consumers from unreasonable prices,” Juan stated.
By scaling back the portfolio ceilings, the regulator aims to inject transparency into the wholesale electricity spot market—ensuring that the ongoing shift toward solar and green energy portfolios does not result in a new wave of corporate monopolies at the expense of ordinary consumers.
