A new boutique hotel in Porto. A huge data centre in Sines. A bigger port in Setúbal. A new factory up north.

Now ask one question. What does every one of them need before it can open its doors?

When Power Equals Profit

That is why I have been watching EDP, Portugal's biggest electricity company.

In the first half of 2026, EDP's operating profit rose 5% to €2.7 billion. The company then raised its profit forecast for the full year to about €1.4 billion. The part of EDP that owns the power lines grew profits by 14%.

EDP is not alone. Companies on Portugal's stock market earned a record €3.6 billion in the first half of the year, 20% more than the old record. Energy led the way.

Here is the common-sense part.

Most investors chase the headline. A data centre gets announced, and everyone wants a piece of the data centre.

But that data centre has to buy electricity every single day. So does every hotel, port and factory.

In February, EDP signed a deal to become the main long-term supplier of clean energy for the Sines Data Campus, one of the largest data centre projects in Europe. EDP expects data centres across Europe to need huge amounts of new power by 2030.

Portugal is ready for that. From January to October 2025, wind, water and sun supplied 68% of the electricity the country used, according to REN, the national grid operator.

Cheap, clean power is no longer just about the climate. It is how countries win investment.

For readers who want to do their own research, four companies on the Lisbon stock exchange stand out:

EDP (ELI: EDP): makes and delivers electricity in Portugal and abroad.

EDP Renováveis (ELI: EDPR): EDP's wind and solar company.

REN (ELI: RENE): runs Portugal's main power lines and gas pipelines.

Galp (ELI: GALP): Portugal's oil and gas company, which is adding solar power.

None of this is risk-free. EDP now owes about €17 billion, and it pays more to borrow than it used to. When interest rates rise, power companies feel it. Clean energy stocks can also swing a lot.

Common-sense investing is not about finding a stock that can never fall.

It is about owning what the economy cannot run without.

Hotels, ports and data centres will keep making headlines.

Every one of them will need to keep paying the power bill.

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