July 23, 2026

How Electricity Reaches Your Home: Understanding the Journey Beyond Meralco

When most people think about electricity, they simply think of Meralco. Every month, we receive a Meralco bill, so it's easy to assume that Meralco generates the electricity flowing into our homes.

The truth is a little more interesting.

Electricity passes through several organizations before it finally reaches your condominium, office, or business. Understanding this process also helps explain why the Philippine government now allows qualified customers to choose alternative electricity suppliers.

The infographic below illustrates the complete journey.

The Journey of Electricity

Electricity follows six major stages before it reaches your home.

1. Power Generation

Everything begins at the power plants.

Electricity is generated from various energy sources including:

Geothermal
Natural Gas
Coal
Wind
Solar
Hydroelectric

These facilities are owned by many different companies such as:

No single company generates all of the country's electricity.

2. Wholesale Electricity Market (IEMOP / WESM)

Once electricity is generated, it enters the competitive wholesale market.

This market allows generators to sell electricity to qualified buyers.

Electricity may be sold through:

Long-term Power Supply Agreements (PSAs)
Independent Power Producer (IPP) contracts
The Wholesale Electricity Spot Market (WESM)

This competitive marketplace helps determine electricity prices based on supply and demand.

3. Meralco Purchases Electricity

Contrary to what many people believe, Meralco is primarily an electricity buyer—not a power generator.

Meralco purchases electricity from multiple generation companies through various supply contracts.

It then prepares this electricity for delivery to its customers.

This explains why your Meralco bill contains a Generation Charge.

That charge represents the cost of purchasing electricity from power producers.

4. National Transmission Grid (NGCP)

After electricity is purchased, it is transmitted across the country through the National Grid Corporation of the Philippines (NGCP).

NGCP operates the country's high-voltage transmission network.

Think of it as the nation's electricity superhighway connecting power plants to every distribution utility.

5. Meralco Distribution System

Once electricity arrives in Metro Manila, Meralco takes over once again—but this time in a completely different role.

Meralco now acts as the Distribution Utility (DU).

Its responsibility is to safely deliver electricity through:

Substations
Distribution transformers
Utility poles
Underground cables
Local distribution lines

This is the physical infrastructure that brings electricity directly to homes and businesses.

Within Meralco's franchise area, every customer uses this same distribution network regardless of who supplies the electricity.

6. The Customer

Finally, electricity reaches:

Homes
Condominiums
Offices
Shops
Factories

At this point, the journey is complete.

Meralco Actually Has Two Different Roles

One of the biggest takeaways from this infographic is that Meralco performs two distinct functions.

Role 1: Electricity Supplier

Traditionally, Meralco purchases electricity from generation companies and sells it to customers.

This is the competitive part of the electricity business.

Role 2: Distribution Utility

Meralco also owns and operates the physical infrastructure that delivers electricity.

This includes:

poles
wires
substations
transformers
underground distribution cables

This is a regulated public utility service.

Although both functions are performed by the Meralco Group, they are separate roles under the Electric Power Industry Reform Act (EPIRA).

Why Are Alternative Electricity Suppliers Appearing?

You may have recently heard companies such as Powerhouse, ACEN RES, or Aboitiz discussing electricity supply options with condominium corporations.

This is made possible through Retail Competition and Open Access (RCOA) under EPIRA.

Qualified customers can now choose who supplies their electricity while continuing to receive electricity through Meralco's distribution network.

In other words:

The supplier may change.
The poles, wires, transformers, and local distribution system do not.

Can You Choose Renewable Energy?

A common misconception is that choosing a renewable electricity supplier means renewable electrons flow directly into your home.

Electricity doesn't work that way.

Once electricity enters the national grid, it mixes together with electricity from every other power plant.

Instead, choosing a renewable supplier means that your supplier is contractually responsible for producing or procuring an equivalent amount of renewable electricity to match your consumption.

It's a commercial choice rather than a physical separation of electrons.

The Future of Electricity Competition

When EPIRA was enacted in 2001, only the largest electricity users were expected to benefit from competition.

Over time, the eligibility threshold has gradually been reduced, allowing more businesses and even condominium corporations to participate in the competitive retail electricity market.

As more qualified customers explore their options, understanding the respective roles of generation companies, the wholesale market, NGCP, Meralco, and Retail Electricity Suppliers becomes increasingly important.

Regardless of who sells the electricity, one thing remains constant:

Generation companies produce it.
NGCP transmits it.
Meralco delivers it.

Together, they power our homes, businesses, and communities every day.

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