Meralco Generation Charge Explained: What It Pays For
TL;DR
The generation charge is what Meralco pays power suppliers for the electricity itself, roughly 64% of a typical bill and the single biggest line item. It moves every month with fuel costs, plant availability, and wholesale spot-market prices. Solar cuts it directly: every kWh you self-consume is a kWh Meralco never has to buy on your behalf.
The generation charge is what Meralco pays for the electricity itself, before transmission, distribution, or a single peso of tax gets added. It’s usually the biggest single line on a residential bill, and it’s the one that moves the most from month to month.
What it pays for
Generation is the wholesale cost of power. Per Meralco’s own published breakdown, it covers what the company pays to:
- Independent power producers with power supply agreements (PSAs) signed with Meralco.
- The Wholesale Electricity Spot Market (WESM), where Meralco buys power it hasn’t already contracted.
- Exported energy from Net Metering and Distributed Energy Resource program participants — meaning some of what shows up in this line item is Meralco paying homeowners with rooftop solar for their surplus.
On a 2025 average, generation runs about 64% of a typical residential bill, source: Meralco, Breakdown of Charges. Because it’s this large, the ERC requires Meralco to source power at the lowest available cost rather than pass through whatever a supplier asks.
Who receives the money
None of it stays with Meralco. Meralco is the collecting agent; the pesos go to the IPPs, to whichever generators or traders sold into WESM that billing period, and to net-metering exporters. That’s a structurally different role than the distribution charge, which is the one piece of the bill Meralco actually keeps.
What makes it move
Fuel prices, plant availability, and spot-market conditions, month to month. The verified generation figures on record for 2026 show the climb: ₱7.8607/kWh in March, ₱8.3864/kWh in April, ₱9.0704/kWh in June, and ₱9.2504/kWh in July (source: Meralco’s monthly rate advisories, archived on our Meralco rate history page).
August 2026 illustrates how the components inside generation shift against each other. Meralco’s advisory reported only a ₱0.0296/kWh increase for August, not the absolute figure, driven by higher costs from First Gas/Prime CoreGen (up ₱0.0845/kWh) after its plants burned pricier LNG during a Malampaya natural gas maintenance shutdown. That increase was mostly offset by WESM costs falling ₱0.5452/kWh on lower Luzon demand and PSA costs falling ₱0.1079/kWh on cheaper LNG elsewhere. For that month, First Gas/Prime CoreGen, WESM, and PSAs made up 22%, 4%, and 74% of Meralco’s energy mix respectively. Source: Meralco, Lower Rates This August 2026. We don’t add that delta to July’s ₱9.2504/kWh to back into an August figure; Meralco didn’t publish the absolute number, and estimating one would be a guess dressed up as data.
For the full month-by-month picture, see the current Meralco rate per kWh and the archive of monthly rate breakdowns going back through the year.
Does solar reduce it?
Yes, and more directly than almost any other line on the bill. Power you generate and use as it’s produced never gets bought from a supplier at all, so it never enters the generation charge calculation. That’s a full offset at the retail generation rate for every self-consumed kWh.
Power you export instead through net metering gets credited back at the generation rate only, roughly ₱5-7/kWh, which is why self-consumption saves more than exporting. Sizing a system around daytime usage rather than maximum export capacity is the difference between offsetting your full bill and offsetting a fraction of it. See how much solar can actually save on your bill for the full math, including the charges solar doesn’t touch.
Frequently asked questions
What does the Meralco generation charge pay for?
The cost of the electricity itself, what Meralco pays to power producers under supply agreements, to the Wholesale Electricity Spot Market, and to net-metering and distributed-energy customers for exported power. It's the largest single component of a residential bill, about 64% on a 2025 average.
Who actually receives the generation charge money?
Not Meralco. It passes straight through to independent power producers with power supply agreements, to whoever sells into the Wholesale Electricity Spot Market that month, and to solar customers exporting under net metering. Meralco collects it and remits it, and the ERC requires Meralco to source at the lowest available cost.
Does solar reduce the generation charge?
Yes, directly. Every kWh your panels produce and you use immediately is a kWh Meralco never buys on your behalf, so it never appears in your generation charge. Power you export instead is credited back at the generation rate only, roughly ₱5-7/kWh, well below what you'd have paid to import it.