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Electricity & gas · Luxembourg
Checked 2026-09-30

⏱️ Fixed price or dynamic (hourly) electricity contract in Luxembourg: which is right for me?

The short answer

A fixed price stays the same for an agreed period. A dynamic price follows the wholesale market hour by hour, so it can be cheaper when you shift your use, and more expensive at peak times.

📜 The rules in Luxembourg

Fixed and dynamic contracts

Dynamic electricity contracts with a price for every hour, following the power exchange, exist in Luxembourg. Suppliers with more than 15,000 customers must offer one to customers with a smart meter (Smarty) and explain the opportunities, costs and risks.

  • Besides dynamic offers, suppliers sell contracts whose price is adjusted automatically at set intervals by a formula, and fixed-term contracts with a fixed price, in which price changes are generally excluded. (myilr.lu)
Official source: ilr.lu · Checked 2026-09-30

🪜 Step by step

  1. Look at how you use energyA dynamic price suits people who can move use to cheap hours, for example with an electric car, a heat pump or a timer. It needs a smart meter.
  2. Check what is on offerSee below what the rules in Luxembourg say about fixed-price and dynamic contracts and who has to offer them.
  3. Read the risks and the termsBefore you sign, the supplier must explain the costs and risks of a dynamic contract. Check the notice period and any exit fee.
  4. Review after a few monthsCompare your bills with what a fixed price would have cost. You can switch again under your contract terms.

📇 Who to contact

Calculix officialCompare electricity and gas offersBefore you switch, or when your price goes up🔗 www.calculix.lu
Institut Luxembourgeois de Régulation (ILR)Supervises energy companies and explains your rightsFor information, and to report a company that breaks the rules📞 (+352) 28 228 228🔗 www.ilr.lu

❓ Questions

Is a dynamic contract cheaper?

Only if you use a lot of power when prices are low. At peak times it can cost much more than a fixed price.

Do I need a smart meter?

Yes. Hourly prices need a meter that records your use per hour or per quarter hour.

Can a fixed price still go up?

Normally not during the fixed period, but taxes and network charges can change. The rules for Luxembourg are on this page.

📎 Sources

Checked: 2026-09-30

🧭 Is this still correct?

We check this information carefully, but phone numbers, websites and rules change — and sometimes we get something wrong. Spotted a mistake or a change? Let us know below.

🔗 Also useful

📈Price increase→🔄Switching supplier→📟Smart meter→🧾Wrong or high bill→💸Can’t pay the bill→

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