Best dynamic tariff electricity supplier

You have a digital meter, an electric car or a heat pump, and the idea of paying for electricity at the real market price appeals to you? A dynamic tariff does exactly that: it follows the wholesale price, hour by hour. The question is which supplier to choose, and whether your profile really fits.

In short:

• A dynamic tariff bills your electricity at the wholesale market price, hour by hour — and every quarter-hour since October 2025.
• The VREG calculated a gain of around €62/year against a variable rate and €193/year against a fixed one, for a 3,500 kWh household.
• The CREG warns: without consumption to shift, your energy cost can instead climb by roughly 15%.
• Engie, Luminus, TotalEnergies, Bolt and EnergyVision all offer a dynamic plan; the standing charge sits around €70/year, peaking at €130.
• A digital meter and consent to share quarter-hourly data are mandatory.

For the full market picture, see our ranking of the best electricity suppliers.

What is a dynamic tariff electricity contract?

A dynamic tariff indexes your kWh price to the Belgian wholesale market, hour by hour. In practice, your supplier applies a price formula tied to the electricity exchange: next-day hourly rates are published the day before, and since 1 October 2025 billing goes down to the quarter-hour. It is the third contract type on the Belgian market, alongside fixed (price frozen for one to three years) and variable (reindexed each month or quarter). The difference in nature matters: fixed and variable sell you an average price, dynamic sells you the price of the moment. At noon on a sunny Sunday in May, that price can hit the floor — or even go below zero. At 6 p.m. on a January Tuesday, it soars. The contract does not save you money on its own: your ability to consume at the right moment decides everything.

Which supplier offers the best dynamic tariff in Belgium?

There is no single winner, for a structural reason: every supplier passes on the same hourly wholesale price. Competition therefore is not about the energy price but about two items only — the annual standing charge and the margin the supplier adds per kWh. Most comparisons skip that nuance, yet it is the whole decision. In May 2026, Test-Achats measured an average standing charge of €70 a year on dynamic contracts, with peaks up to €130: on 3,500 kWh of consumption, that gap alone weighs more than plenty of marketing promises. The same survey put the spread between dynamic offers at close to €180 a year in Flanders. Here are the players (mid-2026 benchmarks, to be checked for your region):

Mega rounds out the challenger landscape, even if the Liège-based supplier remains formidable mainly on variable rates. One point worth knowing: any supplier with more than 200,000 customers in Belgium must offer a dynamic tariff to customers with a digital meter. That is a legal obligation, not a marketing argument — be wary of suppliers presenting it as an in-house innovation.

How much can you really save with a dynamic tariff?

Around €62 a year against variable, and €193 against fixed — but only if you shift your consumption. Those figures come from the VREG, the Flemish regulator, which modelled an average consumer at 3,500 kWh a year over 2025. They are real, but they assume you consume during the troughs: Test-Achats places those favourable windows between 12 p.m. and 5 p.m. and overnight, when solar output is abundant or demand collapses. In practice, for an average household, that means running the washing machine in the early afternoon rather than at 7 p.m., and scheduling the car to charge after midnight. The case I see working best: a home with an electric car and a heat pump on automatic control, where several thousand kWh a year shift to the cheapest hours with no daily effort. That is where dynamic stops being a bet and becomes arithmetic.

Who is a dynamic tariff a bad deal for?

For anyone whose consumption does not move. The CREG is explicit here: a household that does not change its behaviour keeps drawing heavily at peak hours, precisely when the price peaks, and its energy cost can climb by roughly 15%. A dynamic contract does not reward the signature, it rewards the behaviour. If you are out all day, cook and run your machines between 6 p.m. and 9 p.m., and have no electric car, heat pump or battery, you are buying volatility without ever touching the low prices. Add the mental load: tracking a price curve every day eventually wears you down, unless home automation does it for you. That explains a striking figure recorded by the CREG: at the end of 2025, dynamic contracts made up just 0.40% of the Belgian residential market, against 25% for fixed rates. If predictability matters most to you, our comparison of the best fixed-rate electricity supplier fits your need better.

Do you need a digital meter to switch to a dynamic tariff?

Yes, and it is non-negotiable. Only a digital meter measures your consumption every quarter-hour, which is the very condition for hourly billing. You must also explicitly authorise your distribution grid operator — Fluvius in Flanders, Ores or Resa in Wallonia, Sibelga in Brussels — to read that data and forward it to your supplier. In Wallonia, the meter must run in SMR3 configuration, the one that allows quarter-hourly communication; if yours is in reduced mode, a request to the operator is usually enough to switch it. Careful if you have solar panels: a dynamic tariff on consumption comes with dynamic remuneration on injection. When prices turn negative — a very sunny spring afternoon, typically — you pay to inject. In those hours, self-consumption beats the grid.

How can you compare dynamic offers without getting it wrong?

Compare the standing charge and the kWh margin, never the advertised "average price". That is trap number one: a dynamic average price is only a projection, computed on an estimate of the Belgian wholesale price, and what you actually pay depends on your own quarter-hours of consumption. Test-Achats admits it plainly: the association's comparator does not include dynamic tariffs, precisely because the final result is not predictable in advance. What is comparable, however, are the only two items the supplier controls: the annual charge and its margin. The VREG offers an elegant way out: you can download your digital meter's quarter-hourly history and match it against real past prices — the only simulation worth running, because it uses your consumption, not an average. Finally, check the quality of the supplier's app: on a dynamic contract, seeing tomorrow's prices at a glance is not a gadget, it is the tool of the trade.

In short, a dynamic tariff is not a better contract: it is a contract for a different kind of consumer. If you steer an electric car, a heat pump or a battery, the €62 to €193 of annual gain calculated by the VREG are within reach, and choosing a supplier comes down to the standing charge and the margin — Engie, Luminus, TotalEnergies, Bolt and EnergyVision are closely matched. If your consumption does not move, the 15% extra cost flagged by the CREG is a very real risk. Check your specific case on the CREG, VREG or CWaPE comparator, and compare the whole market in our ranking of electricity suppliers.